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Tytuł:
Sensitive Films for Optical Detection of Ammonia and Nitrogen Dioxide
Autorzy:
Tyszkiewicz, C.
Karasiński, P.
Rogoziński, R.
Powiązania:
https://bibliotekanauki.pl/articles/1418064.pdf
Data publikacji:
2012-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Fw
42.70.Ce
07.07.Df
Opis:
The sol-gel technology allows preparation of the thin silica films ranging in porosity from dense to highly porous. These films can function as matrix binding molecules of pH-sensitive indicators and can be utilized as sensitive coatings for intensity based planar evanescent wave chemical sensors. This paper is devoted to manufacturing technology and characterization of highly porous silica films deposited on soda-lime glass substrates, impregnated with bromocresole purple and cresole red. Two different methods of impregnation were used: dip coating, which entails sensitization of both silica films deposited on each side of a substrate and selective deposition of a dye solution on single side of the substrate. Manufactured sensitive films were tested toward influence of gaseous ammonia and nitrogen dioxide on their spectral characteristics of the absorption coefficient and the imaginary part of the refractive index. It was shown that bromocresole purple allows detection of both gases: $NH_3$ and $NO_2$.
Źródło:
Acta Physica Polonica A; 2012, 122, 5; 915-920
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ditlenek azotu. Dokumentacja proponowanych wartości dopuszczalnych wielkości narażenia zawodowego
Nitrogen dioxide
Autorzy:
Starek, A.
Powiązania:
https://bibliotekanauki.pl/articles/138057.pdf
Data publikacji:
2005
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
ditlenek azotu
układ oddechowy
działanie klastogenne
nitrogen dioxide
respiratory tract
clastogenic action
Opis:
Ditlenek azotu (NO2) jest gazem, który dosyć często występuje w środowisku pracy i środowisku komunalnym. Związek ten powstaje podczas: spalania substancji organicznych zawierających azot, detonacji materiałów wybuchowych, obróbki elektrochemicznej metali oraz pracy silników dieslowskich. W 2001 r. w Polsce było 736 osób narażonych zawodowo na ditlenek azotu o stężeniu większym od obowiązującej wartości NDS. Zarówno u ludzi, jak i u zwierząt laboratoryjnych narządem krytycznym dla ditlenku azotu jest układ oddechowy. Ostre zatrucie tym związkiem manifestuje się obrzękiem płuc prowadzącym nawet do zejścia śmiertelnego; związek jest klasyfikowany jako substancja toksyczna. Ditlenek azotu może działać klastogennie (czynnik powodujący załamania chromosomów i ich następstwa w postaci pozyskania, utraty lub przemieszczenia części chromosomów) oraz może sprzyjać rozwojowi nowotworów. Związek ten może również negatywnie wpływać na ontogenetyczny rozwój organizmu. Podstawą wartości najwyższego dopuszczalnego stężenia (NDS) ditlenku azotu są wyniki dobrze udokumentowanych badań przeprowadzonych w przemyśle, których wyniki posłużyły do wykazania pneumotoksycznego działania związku. Wartość NDS ditlenku azotu obliczono na podstawie wartości LOAEL (2,95 mg/m3) i dwóch współczynników niepewności. Na podstawie wartości NDS obliczono również wartość najwyższego dopuszczalnego stężenia chwilowego (NDSCh) ditlenku azotu. Po analizie wyliczeń zaproponowano przyjęcie wartości NDS ditlenku azotu wynoszącej 0,7 mg/m3 oraz wartości NDSCh wynoszącej 1,5 mg/m3.
Nitrogen dioxide (NO2) is a gas commonly present in both occupational and general environments. It is a product of fired materials containing nitrogen. In 2001 in Poland 736 workers were exposed to NO2 at a level above the MAC value. Respiratory tract is a critical organ for toxic action of NO2 in both humans and animals. This chemical is a clastogen. In the industry pneumotoxic effects in workers exposed to NO2 at level of 0.8 – 5.1 mg/m3 were observed. The MAC (TWA) value of 0.7 mg/m3 was calculated on the basis of the LOAEL value (2.95 mg/m3) and relevant uncertainty factors. The MAC (STEL) value was established by calculation at level of 1.5 mg/m3.
Źródło:
Podstawy i Metody Oceny Środowiska Pracy; 2005, 3 (45); 49-64
1231-868X
Pojawia się w:
Podstawy i Metody Oceny Środowiska Pracy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Responses of Metal-Oxide Semiconductor Nanostructures to Nitrogen Dioxide
Autorzy:
Procek, M.
Pustelny, T.
Powiązania:
https://bibliotekanauki.pl/articles/1399393.pdf
Data publikacji:
2013-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
82.47.Rs
07.07.Df
Opis:
The paper concerns analyses of the nanostructures based on metal-oxide semiconductors, such as titanium dioxide $(TiO_2)$ and zinc oxide $(ZnO)$ exposed to nitrogen dioxide $(NO_2)$ in an atmosphere of dry and humid synthetic air. The investigations were performed at a rather low temperature amounting to 120°C. The responses of sensors differing in the morphology of their structures have been compared. Also the time of their responses were compared with each other. The paper describes theoretically changes in the effective resistance of these structures due to the interaction of the gas. The presented results are being discussed based on the analysis of physical and chemical phenomena.
Źródło:
Acta Physica Polonica A; 2013, 124, 3; 529-533
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring Nitrogen Dioxide (NO2) in Environment of Ukraine based on Satellite Data
Autorzy:
Yelistratova, Lesya
Apostolov, Alexander
Khodorovskyi, Artur
Tymchyshyn, Maksym
Powiązania:
https://bibliotekanauki.pl/articles/27314277.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
remote sensing
nitrogen dioxide
air pollution
Ukraine
Opis:
Air pollution (especially near industrial enterprises that are located mainly in densely populated regions) is one of the most significant problems of modern ecology. The purpose of this research is to study nitrogen dioxide air pollution over Ukraine, which has a negative impact on human health. As part of the research over the territory of Ukraine, the real planar distribution of nitrogen dioxide (NO2) as well as its local emissions (which make the main contribution to this distribution) were revealed using the materials of the remote sensing of the Earth from the AURA satellite. The results were calculated for the multi-year period of 2005 through 2021 and separately for 2022, which characterized the full-scale war in Ukraine and which made it possible to identify priority polluters; namely, industrial enterprises (thermal power plants, heavy metallurgy enterprises, etc.). For 17 years, the average value of NO2 was 160.78 · 102 molecules/mm2; in 2022, its concentration decreased to 126.93·109 molecules/mm2. The war manifested itself due to the shutdown of industrial enterprises, which were (and remain) priority polluters in Ukraine (particularly in large cities).
Źródło:
Geomatics and Environmental Engineering; 2023, 17, 6; 95--110
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the Dispersion of Nitrogen Dioxide and Carbon Monoxide in the Indoor Café – Case Study
Autorzy:
Al-Sultan, Ammar A.
Jumaah, Ghufran F.
Al-Ani, Faris H.
Powiązania:
https://bibliotekanauki.pl/articles/124047.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
indoor air pollutants
nitrogen dioxide
carbon monoxide
global standard
smoker
Opis:
A popularity café in Baghdad city was chosen to measure the dispersion of nitrogen dioxide (NO2) and carbon monoxide (CO) as examples of the Indoor Air Pollutants (IAPs) which are considered a significant environmental problem. The aims of this research were, firstly, to measure the variation of NO2 and CO concentrations; secondly, to examine the effect of the seasonal variation of indoor temperature (°C) and relative humidity (%) on the dispersion of both NO2 and CO and finally to compare the results with those of the global standards. The volume of café was about 360 m3 and the number of smokers was about 25-35 smoker/day. This work was divided into two parts where the first part includes the experimental work which comprised the measurement of NO2 and CO by GIGs devices. It was lasted about five months commencing from November 2017 to March 2018 and the readings were taken during two intervals at partial time and during peak time. The second part includes the analysis of obtained results and compared the results of those of the global standards for the Indoor Air Quality suggested by WHO, EPA, and European criteria in order to achieve the goals of this work. The results from this research have highlighted a clear increase in the concentrations of NO2 and CO along with the growing numbers of smokers. Furthermore, the concentrations of NO2 and CO were close to some global standard values of short-term exposure at peak time.
Źródło:
Journal of Ecological Engineering; 2019, 20, 4; 256-261
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kolorymetryczna metoda oznaczania dwutlenku azotu w powietrzu atmosferycznym
Colorimetric method of determination of nitrogen dioxide in atmospheric air
Autorzy:
Borkowska, M.
Wyszynska, H.
Powiązania:
https://bibliotekanauki.pl/articles/874106.pdf
Data publikacji:
1973
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
metody oznaczania
dwutlenek wegla
powietrze atmosferyczne
metoda kolorymetryczna
badania naukowe
Źródło:
Roczniki Państwowego Zakładu Higieny; 1973, 24, 3
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena przestrzennego rozkładu dwutlenku azotu na obszarze Bielska-Białej
An assessment of aspatial distribution of nitrogen dioxide in Bielsko-Biała region
Autorzy:
Kozak, J.
Suryło, P.
Powiązania:
https://bibliotekanauki.pl/articles/400722.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
zanieczyszczenie atmosfery
dwutlenek azotu
zanieczyszczenia komunikacyjne
pollution
nitrogen dioxide
transport pollution
Opis:
Praca ma na celu określenie rozkładu przestrzennego dwutlenku azotu na terenie Bielska-Białej. Badania przeprowadzono w okresie zimowym (luty 2011 r.) wykonując pomiary japońską metodą Amaya-Sugiura w modyfikacji D. Krochmala i L. Górskiego (PN-98 Z-04092/08) z pasywnym pobieraniem próbek. Uzyskane wyniki opracowano graficznie w formie rozkładów przestrzennych, wskazujących na obszary o dużym zagrożeniu wysokimi stężeniami NO2 w imisji.
The aim of the work is to determine a spatial distribution of sulphate dioxide in Bielsko-Biała area. Research was carried out in february of 2011. Experiments were conducted using Amaya-Sugiura method that was modified by D. Krochmal and L. Górski (PN-98 Z-04092/08). The results obtained were graphically represented as spatial maps of regions where concentrations of NO2 were high.
Źródło:
Inżynieria Ekologiczna; 2013, 33; 61-66
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The acid-catalyzed interaction of melanin with nitrite ions : an EPR investigation
Autorzy:
Matuszak, Z.
Chignell, C. F.
Reszka, K. J.
Powiązania:
https://bibliotekanauki.pl/articles/146912.pdf
Data publikacji:
2015
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
EPR
melanin
nitrite
nitrogen dioxide
nitrous acid
radicals
Opis:
The interaction of synthetic dihydroxyphenylalanine (DOPA) melanin (DM) with nitrite ions, NO2 –, in the pH 3.6–7.0 range, has been investigated using electron paramagnetic resonance (EPR). We found that especially at pH <5.5 (from ca. 5.5 to 3.6) the reaction of DM with nitrite generated large quantities of new melanin radicals, which implies the involvement of nitrous acid, HNO2, in the radical formation process. Measurements carried out at constant pH of 3.6 showed that the melanin signal increased together with nitrite concentration, reaching a plateau level which was more than fourfold larger compared to the initial signal amplitude observed in a nitrite-free buffer of the same pH. The effects of nitrite and DM concentrations on the melanin-free radical content were also investigated. It is proposed that the radicals are generated by one electron oxidation of melanin ortho-hydroquinone groups to ortho-semiquinones by HNO2 or related nitrogen oxides such as NO2 • radicals. The possible involvement of nitric oxide (•NO) and peroxynitrite (ONOO–) in DM oxidation was also examined. In air-free solutions, nitric oxide per se did not generate melanin radicals; however, in the presence of oxygen a marked increase in the melanin EPR signal intensity was observed. This result is interpreted in terms of the generation of radicals via the oxidation of DM by peroxynitrite. Our fi ndings suggest that melanin can function as a natural scavenger of nitrous acid and some nitrous acid-derived species. This property may be relevant to physiological functions of melanin pigments in vivo.
Źródło:
Nukleonika; 2015, 60, No. 3, part 1; 475-481
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of tropospheric NO2 over Iraq using OMI satellite measurements
Autorzy:
Rajab, Jasim M.
Hassan, Ahmed S.
Kadhum, Jasim H.
Al-Salihi, Ali M.
San Lim, Hwee
Powiązania:
https://bibliotekanauki.pl/articles/118650.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
nitrogen dioxide
air pollution
remote sensing
Baghdad
Iraq
Opis:
Tropospheric nitrogen dioxide (NO2) is a trace gas with important impact on atmospheric chemistry, human health and a key pollutant in particular cities, measured from space since the mid-1990s by the GOME, SCIAMACHY, OMI, and GOME-2 instruments. This study present ten years (monthly and yearly averaged) dataset from Ozone Monitoring Instrument (OMI) used to investigate tropospheric NO2 characteristics and variations over Iraq during 2005–2014. Annual NO2 shows an elevation from the northern to the southern and highest values was at central parts of Iraq. Monthly distributions revels higher values NO2 in winter and summer than spring and autumn seasons, and rising NO2 throughout study period over industrial and crowded urban zones. The trend analysis over Baghdad shows a linear growth rate 9.8% per year with an annual average (5.6·1015 molecules per 1 cm2). The air mass trajectory analysis as hotspot regions shows seasonal fluctuations between winter and summer seasons depend on weather conditions and topography. The increased NO2 values in winter are due to anthropogenic emissions and subsequent plumes from Europe. In addition, in summer because of hot weather and large paddy fields emissions. The lowest NO2 value was at monsoon period mostly linked to the rains. The OMI data and satellite information are able to observe the troposphere NO2 elevation at different regions.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2020, 29, 1; 3-16
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The sensibility of resistance sensor structures with graphene to the action of selected gaseous media
Autorzy:
Pustelny, T.
Setkiewicz, M.
Drewniak, S.
Maciak, E.
Stolarczyk, A.
Urbańczyk, M.
Procek, M.
Gut, K.
Opilski, Z.
Pasternak, I.
Strupinski, W.
Powiązania:
https://bibliotekanauki.pl/articles/200915.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
graphene
resistance
sensor
hydrogen sensor
nitrogen dioxide sensor
Opis:
The paper presents resistance sensor structures with a graphene sensing layer. The structures were tested concerning their sensitivity to the affects of hydrogen, nitrogen dioxide and steam in an atmosphere of a synthetic air. Investigations have proved that resistance structures with a graphene layer are sensitive to the presence of the tested gases. The resistance of the structures amounted to about 10Ω, whereas changes in the resistances affected by the external gaseous medium were contained within the range of a several mΩ. The investigations confirmed that the resistance structures with graphene exposed to the affect of hydrogen in atmosphere of synthetic air change their resistances practically at once (within the order of only a few seconds). This indicates that such structures might be practically applied in sensors of hydrogen ensuring a short time of response.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 293-300
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the NO2 concentration prediction possibility based on static and dynamic responses of TGS sensors at changing humidity levels
Autorzy:
Kalinowski, Paweł
Woźniak, Łukasz
Jasiński, Grzegorz
Jasiński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/220989.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
TGS sensors
partial least squares
nitrogen dioxide
dynamic measurements
Opis:
The commercially available metal-oxide TGS sensors are widely used in many applications due to the fact that they are inexpensive and considered to be reliable. However, they are partially selective and their responses are influenced by various factors, e.g. temperature or humidity level. Therefore, it is important to design a proper analysis system of the sensor responses. In this paper, the results of examinations of eight commercial TGS sensors combined in an array and measured over a period of a few months for the purpose of prediction of nitrogen dioxide concentration are presented. The measurements were performed at different relative humidity levels. PLS regression was employed as a method of quantitative analysis of the obtained sensor responses. The results of NO2 concentration prediction based on static and dynamic responses of sensors are compared. It is demonstrated that it is possible to predict the nitrogen dioxide concentration despite the influence of humidity.
Źródło:
Metrology and Measurement Systems; 2020, 27, 1; 167-179
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Węgle aktywne z pozostałości po ekstrakcji nadkrytycznej do usuwania ditlenku azotu
Activated carbons from residue after supercritical extraction for removal of nitrogen dioxide
Autorzy:
Bazan, A.
Nowicki, P.
Pietrzak, R.
Powiązania:
https://bibliotekanauki.pl/articles/297086.pdf
Data publikacji:
2016
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
residue after supercritical extraction
activated carbons
physical activation
NO2 removal
pozostałość po ekstrakcji nadkrytycznej
węgiel aktywny
aktywacja fizyczna
adsorpcja NO2
Opis:
The aim of this study was to obtain activated carbons by physical activation of the waste left after supercritical extraction of marigold and hops, provided by the Institute of New Chemical Syntheses in Puławy (Poland). The precursors were first subjected to carbonisation at 500ºC in nitrogen atmosphere. The chars were next subjected to physical activation at 700 and 800ºC in carbon dioxide atmosphere. The effect of activation temperature on the physicochemical properties of the adsorbents prepared has been tested. The carbonaceous materials were characterised by low-temperature nitrogen sorption as well as determination of the number of surface oxygen groups. The sorption properties of the chars and activated carbons obtained were characterised by nitrogen dioxide adsorption. The results have shown that activated carbons are characterised by low developed surface area varying from 2 to 413 m2/g and show alkaline character of the surface. It has been proved that appropriate choice of the activation parameters and the presence of steam have a positive effect on adsorption of nitrogen dioxide by activated carbons obtained. The highest sorption capacity toward nitrogen dioxide in wet conditions was 72.1 mg/gads, while in dry conditions it was 38.7 mg/gads. The results have also shown that future research should be aimed at the optimum choice of the temperature of activation or activating agent in order to significantly improve the textural parameters of the activated carbons.
W pracy przedstawiono wyniki badań, których celem było otrzymanie węgli aktywnych na drodze aktywacji fizycznej pozostałości po ekstrakcji nadkrytycznej szyszek chmielu oraz nagietka. Surowce roślinne pozyskano z Instytutu Nowych Syntez Chemicznych w Puławach. Materiały wyjściowe poddano w pierwszej kolejności procesowi karbonizacji w temperaturze 500ºC w atmosferze azotu. Otrzymane karbonizaty poddano następnie aktywacji fizycznej za pomocą ditlenku węgla w 700 i 800ºC. Zbadano wpływ temperatury aktywacji na właściwości fizykochemiczne otrzymanych węgli aktywnych. Materiały węglowe scharakteryzowano za pomocą niskotemperaturowej adsorpcji/desorpcji azotu oraz oznaczono zawartość powierzchniowych tlenowych grup funkcyjnych o charakterze kwasowym i zasadowym. Dla karbonizatów i węgli aktywnych przeprowadzono pomiary adsorpcji ditlenku azotu. Na podstawie badań stwierdzono, że produkty finalne charakteryzują się słabo rozwiniętą powierzchnią właściwą, mieszczącą się w przedziale od 2 do 413 m2/g, oraz wyraźnie zasadowym charakterem powierzchni. Wykazano, że temperatura aktywacji oraz obecność pary wodnej podczas adsorpcji NO2 ze strumienia powietrza mają znaczący wpływ na zdolności sorpcyjne węgli aktywnych. Najwyższa pojemność sorpcyjna w warunkach wilgotnych wynosiła 72,1 mg/gads, natomiast w warunkach suchych 38,7 mg/gads. Uzyskane wyniki wykazały ponadto, iż niezbędna jest optymalizacja procesu wytwarzania adsorbentów, obejmująca dobór odpowiednich parametrów aktywacji oraz czynników aktywujących, w celu otrzymania węgli aktywnych o bardziej korzystnych parametrach teksturalnych.
Źródło:
Inżynieria i Ochrona Środowiska; 2016, 19, 2; 183-193
1505-3695
2391-7253
Pojawia się w:
Inżynieria i Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Layered thin film nanostructures of Pd/WO3-x as resistance gas sensors
Autorzy:
Urbańczyk, M.
Maciak, E.
Gut, K.
Pustelny, T.
Jakubik, W.
Powiązania:
https://bibliotekanauki.pl/articles/200121.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
tungsten trioxide
palladium
layered nanostructure
resistance sensor
nitrogen dioxide
ammonia
Opis:
Layered nanostructures of tungsten trioxide WO3-x about 62 nm thick, with a very thin film of palladium (about 3.3 nm) on the top, have been studied for gas-sensing application at temperatures 50.C and 120.130.C and low NO2 and NH3 concentrations in 6%, 30% or 45% relative humidity in the air. Thin film WO3-x nanostructures were obtained by vacuum deposition on a common Si-SiO2 substrate at room temperature and 120.C. The palladium was coated by vacuum evaporation at room temperature and 4 �E 10.6 mbar on WO3-x layers obtained at two different substrate temperatures. The average rate of growth of the films, controlled by a QCM, was 0.1.0.2 nm/s. A multi-channel (four-channel interdigital gold electrodes) planar resistance gas sensor structure was used in the experiments. The surface of the nanostructures was characterized by means of the AFM method. Good sensor results have been observed at these layered nanostructures with an increasing resistance for NO2 molecules and decreasing resistance for NH3 molecules in a humid air atmosphere. The interaction and recovery speed were higher in the case of the nanostructure obtained at room temperature.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 401-407
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dependence of air quality conditions in cities in north-western Poland on the direction of air inflow
Autorzy:
Kicińska, Bożena
Mikulska, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2032475.pdf
Data publikacji:
2006-06-01
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
North-western Poland
air pollution
sulphur dioxide
nitrogen dioxide
wind direction
Opis:
This paper presents the dependence of air pollution with sulphur dioxide and nitrogen dioxide on wind direction in Szczecin, Łeba, Elbląg and Zielona Góra in the period 19931999. It has been shown that the most disadvantageous air quality conditions in the cities listed above are on the days with air inflow from south-east, and the most advantageous on the days with advection from north-west. This dependence is particularly evident in the case of pollution with sulphur dioxide, especially in the cold half-year.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2006, 12; 81-86
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Case-crossover design: Air pollution and health outcomes
Autorzy:
Szyszkowicz, Mieczysław
Tremblay, Neil
Powiązania:
https://bibliotekanauki.pl/articles/2185393.pdf
Data publikacji:
2011-09-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
air pollution
city
depression
emergency department
humidity
temperature
nitrogen dioxide
sulphur dioxide
Opis:
Objectives: The objective of this study was to investigate variants of case-crossover design for assessing correlations between counts of health events over time and exposure to ambient air pollution. For illustrative purposes, daily emergency department (ED) visits for depression among females were considered. Materials and Method: Ambient nitrogen dioxide (NO₂) was used as a principal ambient air pollutant. In addition, sulphur dioxide (SO₂) and carbon monoxide (CO) were considered. Different configurations of the control periods (every 1, 2, …, 10 days) and different forms (linear, natural splines) of meteorological factors in the applied conditional logistic regression models were used. The sequence of overlapping age intervals was defined ([0, 19], [1, 20], and so on) and each age group was analyzed separately. The results for the defined age sequences allow identifying age ranges in which the effects are strongest. Results: Consequently, for example, different age ranges for patients for which ED visits for depression were correlated with NO₂ and SO₂ were identified. This age-interval difference explains the very often observed phenomenon whereby two air pollutants used in one model may not show correlations with health outcomes. In this situation they affect separate age groups. The results also show dependency on number-defined control periods for the applied case-crossover technique. The opposite statistical conclusions may be generated by using different control schemas. Conclusions: The results support the hypothesis that ED visits for depressive disorder may be correlated with exposure to ambient air pollution.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2011, 24, 3; 249-255
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Air pollution: how many cigarettes does each Pole ‘smoke’ every year and how does it influence health, with special respect to lung cancer?
Autorzy:
Chudzik, R.
Rybojad, P.
Jarosz-Chudzik, K.
Sawicki, M.
Rybojad, B.
Panasiuk, L.
Powiązania:
https://bibliotekanauki.pl/articles/2085106.pdf
Data publikacji:
2019
Wydawca:
Instytut Medycyny Wsi
Tematy:
lung cancer
PM2.5
air pollution
nitrogen dioxide
PM10
Opis:
Introduction. Air pollution is one of the most important issues of our times. Air quality assessment is based on the measurement of the concentration of substances formed during the combustion process and micro-particles suspended in the air in the form of an aerosol. Microscopic atmospheric particulate matters (PM) 2.5 and 10 are mixtures of organic and inorganic pollutants smaller than 2.5 and 10 μm, respectively. They are the main cause of negative phenomena in the earth’s atmosphere of Earth and human health, especially on the respiratory and cardiovascular systems. Particulates have the ability to cause permanent mutations of tissue, leading to neoplasms and even premature deaths. Nitrogen dioxide (NO2) is one of the main pollutants which arises mainly during the burning of fossil fuels. Based on numerous scientific researches, it has been proved that long-term exposure to NO2 could increase morbidity of cancer due to inflammatory processes increasing abnormal mutations. Materials and method. Data available in the Polish National Cancer Registry, Chief Inspectorate for Environmental Protection and Map of Health Needs in the Field of Oncology for Poland, WHO Air Quality Guidelines 2005 were analyzed. Air pollution was also evaluated: PM2.5, PM10, NO2, and compared with lung cancer morbidity. Results and conclusions. Based on the available data and literature, it can be concluded that in 2009–2017, on average, each Pole smoked ten cigarettes a day +/- 2. Therefore, it can be estimated that after 60 years everyone had 30 package-years of smoking, leading to a high risk of lung cancer and other smoking related diseases. Additionally air quality in Poland is not satisfactory, exceeding the standards presented in the WHO Guidelines 2005. It can be assumed that this may translate into an additional, independent continuous increase in morbidity and mortality dependent on smoking.
Źródło:
Annals of Agricultural and Environmental Medicine; 2019, 26, 4; 566-571
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Overall human mortality and morbidity due to exposure to air pollution
Autorzy:
Samek, Lucyna
Powiązania:
https://bibliotekanauki.pl/articles/2177434.pdf
Data publikacji:
2016-02-08
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
respiratory diseases
cardiovascular diseases
nitrogen dioxide
Health impact assessment
HIA
airborne particulate matter
Opis:
Objectives Concentrations of particulate matter that contains particles with diameter ≤ 10 mm ($\text{PM}_\text{10}$) and diameter ≤ 2.5 mm ($\text{PM}_\text{2.5}$) as well as nitrogen dioxide ($\text{NO}_{2}$) have considerable impact on human mortality, especially in the cases when cardiovascular or respiratory causes are attributed. Additionally, they affect morbidity. An estimation of human mortality and morbidity due to the increased concentrations of $\text{PM}_\text{10}$, $\text{PM}_\text{2.5}$ and $\text{NO}_{2}$ between the years 2005–2013 was performed for the city of Kraków, Poland. For this purpose the Air Quality Health Impact Assessment Tool (AirQ) software was successfully applied. Material and Methods The Air Quality Health Impact Assessment Tool was used for the calculation of the total, cardiovascular and respiratory mortality as well as hospital admissions related to cardiovascular and respiratory diseases. Data on concentrations of $\text{PM}_\text{10}$, $\text{PM}_\text{2.5}$ and $\text{NO}_{2}$, which was obtained from the website of the Voivodeship Inspectorate for Environmental Protection (WIOS) in Kraków, was used in this study. Results Total mortality due to exposure to $\text{PM}_\text{10}$ in 2005 was found to be 41 deaths per 100 000 and dropped to 30 deaths per 100 000 in 2013. Cardiovascular mortality was 2 times lower than the total mortality. However, hospital admissions due to respiratory diseases were more than an order of magnitude higher than the respiratory mortality. Conclusions The calculated total mortality due to $\text{PM}_\text{2.5}$ was higher than that due to $\text{PM}_\text{10}$. Air pollution was determined to have a significant effect on human health. The values obtained by the use of the AirQ software for the city of Kraków imply that exposure to polluted air can result in serious health problems.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2016, 29, 3; 417-426
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlations between air pollutant concentrations in selected urban and rural areas in Poland
Autorzy:
Stelęgowski, Artur
Powiązania:
https://bibliotekanauki.pl/articles/106013.pdf
Data publikacji:
2019
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
air pollution
statistical analysis
nitrogen dioxide
particulate matter
zanieczyszczenie powietrza
analiza statystyczna
dwutlenek azotu
Opis:
Correlations between concentrations of selected air pollutants were analyzed in different areas in central Poland from 2012-2016. Three neighboring voivodeships (Lower Silesian, Lodz, and Masovian), were selected for which specific measurement locations were designated in urban and rural areas. The characteristics of the location of monitoring stations allowed to distinguish the following types of measurement stations: “urbantransport”, “urban-background", "suburban-background", "town-background", and "rural-background". Therefore, using the Pearson's linear correlation coefficient, it was possible to analyze the interrelations between the occurrence of air pollution in various types of areas. It was found that the coefficient changed along with the type of area. Moreover, it turned out that the coefficient decreased in each voivodeship along with a decrease in the population density of the analyzed areas. In addition, concentrations of various air pollutants in given areas were compared. Also, it was observed that the strongest correlations occur between the results of calculations from measurement stations located in the same province.
Źródło:
Acta Innovations; 2019, 31; 14-22
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zmienność stężenia ditlenku siarki i ditlenku azotu na Pomorzu w zależności od warunków meteorologicznych
Variability of sulfur dioxide and nitrogen dioxide concentrations in Pomerania in relation to meteorological conditions
Autorzy:
Czarnecka, M.
Kalbarczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/337789.pdf
Data publikacji:
2005
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
elementy meteorologiczne
Pomorze
zanieczyszczenia gazowe
gaseous pollution
meteorological elements
Pomerania
Opis:
Celem pracy była ocena zmienności stężenia ditlenku siarki i ditlenku azotu na Pomorzu w zależności od głównych elementów meteorologicznych. Zależność tę opisano za pomocą analizy korelacji oraz regresji pojedynczej i wielokrotnej, stosując program STATISTICA 6. W pracy uwzględniono dobowe wyniki stężenia SO2 i NO2 z dziesięciu stacji pomiarowych oraz wartości elementów meteorologicznych z lat 1993-2002 ze stacji meteorologicznych IMGW, położonych najbliżej stacji imisyjnych. Stwierdzono, że na stężenie ditlenku siarki oddziałuje głównie temperatura powietrza oraz liczba dni z opadem dobowym ≥ 0,5 mm, natomiast na stężenie ditlenku azotu - prędkość wiatru, liczba dni z opadem ≥ 0,5 mm oraz usłonecznienie rzeczywiste. Wpływ warunków meteorologicznych na stężenie SO2 ujawnia się przede wszystkim zimą, podczas gdy na stężenie NO2 - głównie jesienią.
The aim of the study was to assess variability of concentrations of sulfur dioxide and nitrogen dioxide in relation to main meteorological factors. This relationship was described by correlation analysis and linear and multiple regressions using the STATISTICA 6 software. 24 hour concentrations of SO2 and NO2 from ten measurement stations and meteorological factors gathered at IMGW meteorological stations closest to the immission stations in the period 1993 to 2002 were taken for the analysis. Air temperature and the number of days with 24 hour precipitation of ≥ 0.5 mm were found to mainly affect the concentrations of sulfur dioxide, whereas the wind velocity, the number of days with 24 hour precipitation of ≥ 0.5 mm and real solar radiation influenced the concentrations of nitrogen dioxide. The effect of meteorological conditions on the concentrations of sulfur dioxide was particularly visible in winter, while the concentrations of nitrogen dioxide were affected by meteorological conditions mainly in autumn.
Źródło:
Woda-Środowisko-Obszary Wiejskie; 2005, T. 5, z. spec.; 93-106
1642-8145
Pojawia się w:
Woda-Środowisko-Obszary Wiejskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influences of source intensity and meteorological factors on sulfur dioxide and nitrogen oxides based on the path analysis mode
Autorzy:
Guo, Chen-Lin
Zhang, Jing
Zhou, Qian Shuang
Ma, Yong
Powiązania:
https://bibliotekanauki.pl/articles/2171846.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
meteorological factor
analysis model
sulfur dioxide
nitrogen dioxide
czynnik meteorologiczny
model analityczny
dwutlenek siarki
tlenek azotu
Opis:
With rapid economic development and industrialization, air pollution is becoming a critical global issue affecting health. Sulfur dioxide and nitrogen oxides are the major contributors to acid rain and the key indicators for evaluating atmospheric pollution. And source intensity and meteorological factors are the main ways to influence the concentrations of sulfur dioxide and nitrogen oxides. Thus, to investigate the specific effects of source intensity, temperature, humidity, wind speed and atmospheric pressure on SO2 and NOx, the path analysis method was used for the model. The results showed that Source intensity significantly affects the concentrations of SO2and NO2. For both NO2 and SO2, the source intensity accounted for around 40%. Meteorological factors have very limited effects on the concentrations of SO2and NO2. The effects of the meteorological factors on air pollutants are specific as differences in material properties. Humidity significantly affects the concentration of SO2while temperature, humidity and wind speed have significantly affected the concentration of NO2.
Źródło:
Environment Protection Engineering; 2022, 48, 4; 51--65
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Air Monitoring System in Megacity on the Example of St. Petersburg
Autorzy:
Dzhevaga, Natalia
Borisova, Darya
Powiązania:
https://bibliotekanauki.pl/articles/1839623.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
monitoring
air quality
environmental safety
dust
PM2.5
PM10
volatile organic compound
carbon oxide
nitrogen dioxide
Opis:
The paper considers the current problem of improving the quality of atmospheric monitoring. The paper aimed at conducting a monitoring section of the existing situation in the studied territories in St. Petersburg. The following study methods were described: gravimetric, electrochemical, and chromatographic. The analysis of samples was carried out on the following laboratory facilities of the mobile environmental laboratory: PU-3E aspirator, ECOLAB portable gas analyser, DUSTTRAK 8533 dust analyser, portable gas chromatograph FGKh-1, professional weather station. The study consisted of two parts and was carried out in two districts of the city: Novosmolenskaya Embankment of the Smolenka River (Vasileostrovsky District) and the banks of the Volkovka River (Frunzensky District). As a result of the study, the concentrations of nitrogen dioxide, carbon oxide, suspended solids and volatile organic compounds in the air of the studied districts were measured. The obtained values were compared with the maximal single limiting concentration (LMCm.s.) and assumptions were made about the possible sources of pollution. In the territory of Novosmolenskaya Embankment, the concentration of nitrogen dioxide varied from 0.211 mg/m3 to 0.472 mg/m3, which means the exceedance of LMCm.s. The maximum permissible concentration of the volatile organic compounds (VOC) content in air was exceeded by several orders of magnitude. No exceedance of LMCm.s. was detected for the content of carbon oxide and suspended solids in the air. The empirical data was used to build the air pollution content maps and to calculate the atmospheric pollution index in the studied territory.
Źródło:
Journal of Ecological Engineering; 2021, 22, 4; 175-185
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal changes in labile organic matter, mineral nitrogen, and N2O emission in a loamy sand Orthic Luvisol cultivated under three management practices
Autorzy:
Dabek-Szreniawska, M.
Balashov, E.
Powiązania:
https://bibliotekanauki.pl/articles/25164.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
organic matter
soil quality
emission
loamy sand
labile organic matter
management practice
nitrogen dioxide
seasonal change
growing period
Źródło:
International Agrophysics; 2007, 21, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Explicit and implicit description of the factors impact on the NO2 concentration in the traffic corridor
Jawny i niejawny opis wpływu czynników na stężenie NO2 w kanionie komunikacyjnym
Autorzy:
Kamińska, Joanna Amelia
Turek, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/204830.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nitrogen dioxide
traffic flow
meteorological conditions
random forest
linear regression
dwutlenek azotu
ruch uliczny
warunki meteorologiczne
losowy las
regresja liniowa
Opis:
High concentrations of nitrogen dioxide in the air, particularly in heavily urbanized areas, have an adverse effect on many aspects of residents’ health. A method is proposed for modelling daily average, minimal and maximal atmospheric NO2 concentrations in a conurbation, using two types of modelling: multiple linear regression (LR) an advanced data mining technique – Random Forest (RF). It was shown that Random Forest technique can be successfully applied to predict daily NO2 concentration based on data from 2015–2017 years and gives better fi t than linear models. The best results were obtained for predicting daily average NO2 values with R2=0.69 and RMSE=7.47 μg/m3. The cost of receiving an explicit, interpretable function is a much worse fit (R2 from 0.32 to 0.57). Verification of models on independent material from the first half of 2018 showed the correctness of the models with the mean average percentage error equal to 16.5% for RF and 28% for LR modelling daily average concentration. The most important factors were wind conditions and traffic flow. In prediction of maximal daily concentration, air temperature and air humidity take on greater importance. Prevailing westerly and south-westerly winds in Wrocław effectively implement the idea of ventilating the city within the studied intersection. Summarizing: when modeling natural phenomena, a compromise should be sought between the accuracy of the model and its interpretability.
Celem pracy jest zbadanie możliwości prognozowania dziennego stężenia NO2 za pomocą metody losowego lasu – RF i porównanie wyników z wielowymiarową regresją liniową (LR) w oparciu o ten sam zestaw danych. Ponadto zbadano wpływ zwiększenia interpretowalności modelu na jego dokładność. W pracy przedstawiono dwie metody modelowania dziennych wartości minimalnych, średnich oraz maksymalnych stężeń NO2 w aglomeracji miejskiej: wielowymiarowa regresja liniowa (LR) oraz losowy las (RF). Wykazano, że metoda Lasu Losowego (Random Forest) może być skutecznie wykorzystywana do przewidywania dziennych wartości stężenia NO2. Największą dokładność otrzymano dla przewidywania średnich wartości dziennych stężenia z R2=0.69 oraz RMSE=7.47 μg/m3. Kosztem otrzymania jawnej postaci funkcji w modeli liniowym (LR) jest znacząco niższa dokładność przewidywania wartości stężenia (R2 od 0.32 do 0.57). Weryfikacja modeli na niezależnym materiale z pierwszej połowy 2018 roku potwierdziła poprawność modeli ze średnim błędem względnym dla średnich wartości dobowych stężeń równym 16.5% dla RF oraz 28% dla LR. Największy wpływ na stężenia NO2 w kanionie komunikacyjnym ma wiatr oraz natężenie ruchu. W modelowaniu maksymalnych wartości dobowych nabierają znaczenia temperatura powietrza oraz wilgotność względna powietrza. Przeważające zachodnie i północno-zachodnie wiatry we Wrocławiu skutecznie realizują koncepcję przewietrzania miasta w zakresie rozważanego skrzyżowania.
Źródło:
Archives of Environmental Protection; 2020, 46, 1; 93-99
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Związek między stężeniem dwutlenku siarki i dwutlenku azotu w powietrzu atmosferycznym a rodzajem napływających mas powietrza w Ursynowie SGGW
The relationship between sulphur dioxide and nitrogen dioxide concentration and type of air masses inflow in Ursynów WULS
Autorzy:
Rozbicka, K.
Kleniewska, M.
Powiązania:
https://bibliotekanauki.pl/articles/887454.pdf
Data publikacji:
2007
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
Warszawa-Ursynow
dwutlenek azotu
dwutlenek siarki
masy powietrza
powietrze atmosferyczne
stezenie dwutlenku azotu
stezenie dwutlenku siarki
zanieczyszczenia powietrza
Opis:
This work shows description of the state of air pollution by sulphur dioxide and nitrogen dioxide in different air mass on Ursynów WULS station. There are two main purposes in this work. First purpose is to calculate the value of SO2 and NO2 concentration in station Ursynów WULS in dependence on infl owing air mass. Second purpose is to calculate the relations between concentration of SO2 and NO2 in the air and some basic meteorological elements such as air temperature and relative humidity, wind velocity and rain fall. The studies covered the period of April 2001 to September 2006.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2007, 16, 3[37]
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nitrogen and carbon dioxide fracturing fluids for the stimulation of unconventional shale plays
Autorzy:
Palmer, C.
Sito, Z.
Powiązania:
https://bibliotekanauki.pl/articles/299070.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
nitrogen
carbon dioxide
fracturing fluids
shale gas
Opis:
With the International Energy Agency (IEA) projecting that the global demand for natural gas to increase by 50% from 2010 to 2035, the exploration of unconventional gas reserves (e.g. shale gas, tight gas and coal bed methane) will gain increasing importance as conventional gas reserves become more depleted. To enhance the production of unconventional gas and oil, water-based fracturing fluids are extensively used for the stimulation of North American shale plays because they are inexpensive and offer excellent proppant transport into the fracture when used with gelled polymers. However, in circumstances where water-based fracturing fluids are unsuitable due to concerns related to water sensitivity and clay swelling, alternative fracturing fluids are used such as nitrogen and carbon dioxide treatments. Nitrogen and carbon dioxide fracturing fluids are particularly advantageous in depleted and shallow formations because they offer a non-damaging effect around the fracture, rapid cleanup of flowback fluid, and reduced water requirements compared to conventional water-based fracturing fluids. Much research has been published about water-based fracture treatments, therefore, this review paper considers the use of nitrogen and carbon dioxide fracturing fluids used for the stimulation of unconventional shale plays, mainly in North America. By analysing selected literatures studies, this review paper summarises the utilization of the various types of nitrogen and carbon dioxide treatments (i.e. straight gas, foam, energized, cryogenic liquids) across various shale plays such as the Montney play, the Devonian play, and the Marcellus play. The paper further identifies the major benefits and challenges of nitrogen and carbon dioxide treatments documented by well operators, which will facilitate knowledge transfer about the applicability of nitrogen and carbon dioxide fracturing fluids.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 1; 191-198
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
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