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Tytuł:
Modeling Pollution Index Using Artificial Neural Network and Multiple Linear Regression Coupled with Genetic Algorithm
Autorzy:
Abdulkareem, Iman Ali
Abbas, Abdulhussain A.
Dawood, Ammar Salman
Powiązania:
https://bibliotekanauki.pl/articles/2068477.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Shatt Al-Arab river
comprehensive pollution index
multiple linear regression
artificial neural network
genetic algorithm
Opis:
Shatt Al-Arab River in Basrah province, Iraq, was assessed by applying comprehensive pollution index (CPI) at fifteen sampling locations from 2011 to 2020, taking into consideration twelve physicochemical parameters which included pH, Tur., TDS, EC, TH, Na+, K+, Ca+2, Mg+2, Alk., SO4-2, and Cl-. The effectiveness of multiple linear regression (MLR) and artificial neural network (ANN) for predicting comprehensive pollution index was examined in this research. In order to determine the ideal values of the predictor parameters that lead to the lowest CPI value, the genetic algorithm coupled with multiple linear regression (GA-MLR) was used. A multi-layer feed-forward neural network with backpropagation algorithm was used in this study. The optimal ANN structure utilized in this research consisted of three layers: the input layer, one hidden layer, and one output layer. The predicted equation of the comprehensive pollution index was created using the regression technique and used as an objective function of the genetic algorithm. The minimum predicted comprehensive pollution index value recommended by the GA-MLR approach was 0.3777.
Źródło:
Journal of Ecological Engineering; 2022, 23, 3; 236--250
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological risk assessment of heavy metals in soil developed on coastal marine sediment along coastal area in Anantigha, Calabar, Nigeria
Autorzy:
Aki, E. E.
Isong, I. A.
Powiązania:
https://bibliotekanauki.pl/articles/1076124.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ecological risk factor
geo-accumulation Index
heavy metal
pollution load index marine sediment
Opis:
Coastal areas in Anantigha are utilized as dumpsite for industrial and domestic wastes including effluent from local industries and inhabitants of the area despite their usage for crop cultivation. Thus, the present study was designed to assess the concentration, pollution load and ecological risk of heavy metal in Anantigha coastal area. Standard pollution indices such as contamination factor (Cf), degree of contamination, pollution load index (PLI), enrichment factor (EF), geo-accumulation index (Igeo) and ecological risk index were deployed to assess the level of heavy metals contamination in the area. The results showed that the sediment was acidic under dried conditions and low in conductivity. The mean concentration levels of all the heavy metals were lower than their mean background values except for Al. The orders of dominance for concentration of heavy metals were: Al>Fe>Mn>Cu>Zn (Station 1) and Al>Fe>Mn>Zn>Cu (Stations 2, 3 and 4). Analyzed data showed that the sediments in the area are contaminated with Al with Igeo result showing station 2 and 4 been moderately to heavily contaminated with Al while station 4 was heavily contaminated with aluminium. Station 1 had low degree of contamination, whereas station 2 and 4 had moderate degree of contamination, and station 3 showed considerable degree of contamination. The PLI result indicates unpolluted condition and the area were not enriched by the studied heavy metals as shown by EF values. Hence, the sediment in Anantigha coastal marine area was classified as having low ecological risk factor. However, the levels of these metals are not static; there is tendency for increase as a result of increased human input and activities. Hence, there is a need for regular soil testing.
Źródło:
World Scientific News; 2019, 116; 1-24
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of Soil Pollution Levels in Al-Qadisiyah Governorate, Iraq Using Contamination Index and GIS
Autorzy:
Al-Khuzaie, Marwah M.
Abdul Maulud, Khairul Nizam
Powiązania:
https://bibliotekanauki.pl/articles/2068473.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
geo-accumulation index
pollution load index
trace element variation
inverse distance weighting
bayesian kriging
Opis:
The precise determination of trace element concentrations in the soil of the Al-Qadisiyah Governorate is part of the Iraqi sedimentary plain is required to eliminate high levels of harmful elements in polluted soils. The soil samples were collected from 28 representative profiles in Al-Shamiyah city. The soil profiles were defined using virtual characterization. In this study, I-geo was used to analyze soil pollution. The goals and destinations of the I-geo readings Contamination of Cd, Ni, Pb, and Zn in various soil strata. I-geo (Cd) generally range from 0.58 to 4.71, I-geo (Ni) range from 0.09 to 4.07, I-geo (Pb) ranged range from 0.07 to 2.79, and I-geo (Zn) ranges from zero to 2.79, depicting the local differences in I-geo for pollutants in the research area. Suggesting that the research area had been heavily polluted from Cd in the varied layers of the soils. On the maps pertaining to Zn and Pb, the majority of the research area was primarily covered in the orange and blue hues, suggesting that a significant portion of the research area was likely to be severely polluted from Cd and Ni. Moreover, the land cover layouts of Ni in layers of the soils revealed concentrations rising towards to the western sections, which could be attributed to proximity to a major drain. The results display that its I-geo value of four trace metals generally range from non-pollute to significantly heavily polluted. The I-geo data show significant differences in levels of the Ni, Cd, Zn, and Pb in different soils strata. Including these findings, the soil in Al-Shamiya, Al-Qadisiyah Governorate contains high levels of Cd, Ni, Pb, and Zn. Industries of fossil fuel combustion, as well as other man-made wastes include agricultural nutrients, soil conditioners, and sludge, particularly, ammonium phosphate pollution in soils. The pollutant load index (PLI) reveals a baseline level of contamination in 28 locations, as well as a decline in soil quality in four others. Finally, assessing the danger of contamination for trace metals utilizing the I-geo and PLI by using the GIS method and multimodal models is a helpful and relevant strategy.
Źródło:
Journal of Ecological Engineering; 2022, 23, 3; 206--213
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological assessment of heavy metals in the grey mangrove (Avicennia marina) and associated sediments along the Red Sea coast of Saudi Arabia
Autorzy:
Alzahrani, D.A.
Selim, E.-M.M.
El-Sherbiny, M.M.
Powiązania:
https://bibliotekanauki.pl/articles/47854.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
mangrove
Avicennia marina
marine ecosystem
heavy metal
sediment
pollution index
principal component analysis
ecological assessment
Saudi Arabia
Red Sea
Źródło:
Oceanologia; 2018, 60, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of Trace Elements in Surface Water and Sediments from Warri River in Warri, Delta State of Nigeria
Autorzy:
Ama, Ibiam Ntachiobi
Nwajei, Godfry E.
Agbaire, P. O.
Powiązania:
https://bibliotekanauki.pl/articles/1114111.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Contamination
Trace elements
Warri River
pollution index
Opis:
The pollution of surface water and sediments by heavy metals has become a difficult thing to deal with due to their toxicity and accumulative behavior. The present study was undertaken to provide information on the concentrations and distribution of selected heavy metals in surface water and sediments from Warri River, and to compute a contamination/pollution index of heavy metals. Surface water and sediment samples were collected using standard methods and then analysed for nine trace metals. These metals were determined using a Flame Atomic Absorption Spectrophotometer – UNICAM 929. According to our results, the mean concentrations of the select metals in the sediments were higher than those of the surface water. The figures, however, varied significantly in the six sample locations (SW1–SW6). In the sediments, the highest mean concentration was of Fe (504.13 mg/kg) in location SW1, whereas in surface water, generally, the highest mean concentration was of Fe (1.23 mg/l). In other words, mean metal levels in the sediments exceeded those of surface water. This indicates that sediments are a sink for metal pollution loads. Computation of contamination/ pollution index in sediment matrix revealed that Cd moderately polluted the sediment, Zn, Fe, Ni slightly, yet significantly contaminated the sediment, while Cu, Cr and Mn very slightly contaminated the sediments. The mean values of metals in this present study were compared with other values reported by other researchers. The higher than normal metal values were attributed to anthropogenic wastes, runoff, refinery jetty and varied petroleum related activities in the area.
Źródło:
World News of Natural Sciences; 2017, 11; 65-82
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Heavy Metals Contamination in Spoil Heaps of Ain Aouda Mine (Taza, Morocco)
Autorzy:
Assabar, Narmine
Lahmidi, Ikram
Jabrane, Raouf
Powiązania:
https://bibliotekanauki.pl/articles/24201747.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
pollution index
Ain Aouda mine
geoaccumulation index
enrichment factor
Opis:
The purpose of this study is to evaluate the level of heavy metal contamination in the spoil heaps of the former Ain Aouda mine (Taza). In this regard, solid samples of the study area were sampled. The set of analyses carried out have detected the presence of zinc (Zn), lead (Pb), copper (Cu), arsenic (As) and nickel (Ni) that remain in these metal discharges. The calculation of contamination/pollution indices: the Geo Accumulation Index (Igeo), the Enrichment Factor (EF) and the Pollution Index (IP) were used to predict the extent of heavy metal contamination. The results of this study suggest that the spoil heaps reveal polymetallic contaminations allowing the trace metal elements to be classified in the following order Zn ˃ Pb ˃ As ˃ Cu > Ni. Knowing well that the alteration and erosion of this stock of mine waste could contribute to the degradation of the natural environment by these elements that are present.
Źródło:
Journal of Ecological Engineering; 2023, 24, 3; 224--231
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Air Quality Index in Annaba
Ocena wskaźnika jakości powietrza w Annabie
Autorzy:
Badjoudj, Salem
Benselhoub, Aissa
Narsis, Souad
Dovbash, Nadiia
Idres, Abdelaziz
Benghadab, Khadouja Marame
Boutarfa, Fares
Bounouala, Mohamed
Bellucci, Stefano
Powiązania:
https://bibliotekanauki.pl/articles/27323293.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
PM
atmospheric pollution
AQI
thresholds
northeastern of Algeria
zanieczyszczenie atmosfery
wartości progowe
północno-wschodnia Algieria
Opis:
In recent years, the world has been witnessing serious ecological imbalances due to the catastrophic situation and the damage caused to the environment. Human activities as waste disposal, cement units, smelting, chemical industries etc., are the main causes of pollution. Air pollution directly affects the human living standards, pollutants requires regular control in view of their direct impact on health, such as nitrogen oxide, sulfur dioxide, ozone, and particulate matter. Algeria adopts international standards to monitor the levels of pollution recorded in Algerian cities and compare them with global levels. In this context, quantitative estimates of polluted waste resulting from some industrial activities have been conducted in order to determine the degree of its danger and the extent of its contribution to the deterioration of the air quality. The monitoring of pollutants allowed us to identify the benefits of comprehensive environmental assessment. We determined the air quality index in Annaba using various pollutants parameters (dust, ozone, nitrogen dioxide and sulfur dioxide). A ten-point scale ranking of the overall air quality index of pollution accepted in Algeria allows making the differentiated assessment of negative impacts of existing industrial agglomerations on the environment. However, the analysis performed on samples DC1 and DC2 with SEM (TESCAN model VEGA II) and BSE detector (Backscattered Electrons) shows that the particles sizes are estimated to range from hundreds of microns to a few microns, a different morphology and irregular shape. Our results will enable policy makers to appropriate measures to be taken, and which are based mainly on sensitizing economic operators to environmental issues in order to adopt an environmentally friendly industrial system.
W ostatnich latach świat był świadkiem poważnych zaburzeń równowagi ekologicznej z powodu katastrofalnej sytuacji i szkód wyrządzonych środowisku. Działalność człowieka, taka jak usuwanie odpadów, cementownie, hutnictwo, przemysł chemiczny itp. są głównymi przyczynami zanieczyszczenia. Zanieczyszczenie powietrza bezpośrednio wpływa na standardy życia ludzi, zanieczyszczenia wymagają regularnej kontroli ze względu na ich bezpośredni wpływ na zdrowie, takie jak tlenek azotu, dwutlenek siarki, ozon i pył zawieszony. Algieria przyjmuje międzynarodowe standardy w celu monitorowania poziomów zanieczyszczeń rejestrowanych w algierskich miastach i porównywania ich z poziomami globalnymi. W tym kontekście przeprowadzono ilościowe szacunki zanieczyszczonych odpadów powstających w wyniku niektórych działań przemysłowych w celu określenia stopnia ich zagrożenia i zakresu ich wkładu w pogorszenie jakości powietrza. Monitorowanie zanieczyszczeń pozwoliło nam zidentyfikować korzyści płynące z kompleksowej oceny środowiska. Określiliśmy indeks jakości powietrza w Annabie, wykorzystując różne parametry zanieczyszczeń (pył, ozon, dwutlenek azotu i dwutlenek siarki). Dziesięciopunktowa skala rankingu ogólnego wskaźnika jakości powietrza zanieczyszczeń przyjętych w Algierii pozwala na zróżnicowaną ocenę negatywnego wpływu istniejących aglomeracji przemysłowych na środowisko. Jednak analiza przeprowadzona na próbkach DC1 i DC2 za pomocą SEM (TESCAN model VEGA II) i detektora BSE (Backscattered Electrons) pokazuje, że rozmiary cząstek szacuje się na od setek mikronów do kilku mikronów, o różnej morfologii i nieregularnym kształcie. Nasze wyniki umożliwią decydentom podjęcie odpowiednich środków, które opierają się głównie na uwrażliwieniu podmiotów gospodarczych na kwestie środowiskowe w celu przyjęcia przyjaznego dla środowiska systemu przemysłowego.
Źródło:
Inżynieria Mineralna; 2023, 2; 341--350
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Quality and Organic Pollution Indices in The Physico-Chemical Quality Assessment of Kébir Wadi East Surface Waters (Region of El Taref, Extreme North East Algeria)
Autorzy:
Bahroun, Sofia
Nouri, Nada
Smida, Bouthaina
Powiązania:
https://bibliotekanauki.pl/articles/27314708.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
surface water
WQI
water quality index
OPI
organic pollution index
urban wastes
seasonal variation
North East Algeria
Kébir wadi East
wody powierzchniowe
wskaźnik jakości wody
wskaźnik zanieczyszczenia organicznego
odpady miejskie
Algieria Północno-Wschodnia
Opis:
Surface water is subject to strong anthropogenic pressures caused by the development and the extension of the agricultural activities and also by the industrial and domestic activities. Pollution is a major environmental problem due to discharges into rivers and the excessive use of agricultural fertilizers add to that the discharges from urban and industrial sources. The aim of this study is to assess the quality and the state of the organic pollution of surface water in the Kébir wadi east, based on the Water Quality Index (WQI) and the Organic Pollution Index (OPI) during six sampling campaigns carried out between April and September of the year 2011. Seven stations were studied along the Kébir wadi east downstream from the Mexa Dam. The results are visualized by the use of GIS through making thematic maps. They revealed that half of the stations show excellent to good water quality and moderated organic pollution except the stations S3, S6 and S4, that have poor water quality and high pollution at S3 and S6 respectively, and non-potable water with very high organic pollution at S4. The anthropogenic environmental deterioration recorded in the wadi is the result of the use of nitrogen and phosphate agricultural fertilizers and especially, the discharge of untreated domestic and industrial wastewater from neighbouring agglomerations. The seasonal variation remains discrete and reflects a slight tendency to the deterioration of the waters of El Tarf region during the low waters of the summer period.
Źródło:
Civil and Environmental Engineering Reports; 2022, 32, 1; 43--58
2080-5187
2450-8594
Pojawia się w:
Civil and Environmental Engineering Reports
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of environmetric & index methods as water quality comparative assessment tools focusing on heavy metal content
Autorzy:
Boyacioglu, H.
Powiązania:
https://bibliotekanauki.pl/articles/204558.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cluster analysis
factor analysis
heavy metal
pollution fingerprint
water quality index
Opis:
In the study suitability of water quality index approach and environmetric methods in fi ngerprinting heavy metal pollution as well as comparison of spatial variability of multiple contaminants in surface water were assessed in the case of The Gediz River Basin, Turkey. Water quality variables were categorized into two classes using factor and cluster analysis. Furthermore, soil contamination index was adapted to water pollution index and used to fi nd out the relative relationship between the reference standards and the current situation of heavy metal contamination in water. Results revealed that surface water heavy metal content was mainly governed by metal processing, textile and tannery industries in the region. On the other hand, metal processing industry discharges mainly degraded quality of water in Kemalpasa and Menemen. Furthermore, Kemalpasa region has been heavily affected from tannery and textile industries effl uents. Moreover, pollution parameters have not been infl uenced by changes in physical factors (discharge and temperature). This study indicated the effectiveness of water quality index approach and statistical tools in fi ngerprinting of pollution and comparative assessment of water quality. Both methods can assist decision makers to determine priorities in management practices.
Źródło:
Archives of Environmental Protection; 2012, 38, 3; 17-28
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Assessment of the Surface Water Quality Using the Water Pollution Index: A Case Study of the Timok River (The Danube River Basin), Serbia
Autorzy:
Brankov, J.
Milijašević, D.
Milanović, A.
Powiązania:
https://bibliotekanauki.pl/articles/204919.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
zanieczyszczenia organiczne
wskaźnik zanieczyszczenia wody
Serbia
Timok River
Borska Reka River
Water Pollution Index
mining
organic pollution
Opis:
The Timok River (202 km long, 4547 km2 basin area) is located in East Serbia. It is a right tributary of the Danube River and one of the most polluted watercourses in Serbia. On the basis of the data provided by the Republic Hydrometeorological Service of Serbia, the paper presents an analysis of water quality and pollution using the combined physico-chemical WPI index (Water Pollution Index) calculated for two periods - 1993-96 and 2006-2009 at four hydrological stations: Zaječar-Gamzigrad (Crni Timok River), Zaječar (Beli Timok River), Rgotina (Borska Reka River) and Čokonjar (Timok River). The following parameters were taken into consideration: dissolved O2, O2 saturation, pH, suspended sediments, Five Day Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (CODMn), nitrites, nitrates, orthophosphates, ammonium, metals (Cu, Fe, Mn, Hg, Ni, Zn, Cd), sulphates and coliform germs. The average WPI values were calculated for the observed periods based on the comparison of the annual average values of the listed parameters and defined standard values for the I water quality class (according to the Regulation on the Hygienic Acceptability of Potable Water of the Republic of Serbia). The highest pollution degree was recorded in the Borska Reka River, where heavy metal levels (especially manganese and iron) were significantly increased. These metals are indicators of inorganic pollution (primarily caused by copper mining). Also, increased values of the organic pollution indicators (ammonium, coliform germs, Five-Day Biological Oxygen Demand - BOD5) in the Borska Reka and the Timok rivers are the result of uncontrolled domestic wastewater discharge.
Źródło:
Archives of Environmental Protection; 2012, 38, 1; 49-61
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of pollution indices for the spatiotemporal assessment of the negative impact of a municipal landfill on groundwater (Tychy, southern Poland)
Autorzy:
Dąbrowska, D.
Witkowski, A. J.
Sołtysiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060452.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
hydrogeology
groundwater risk assessment
contamination index
municipal landfill site
Tychy-Urbanowice
Opis:
Risk assessment plays an essential role in the protection of groundwater resources, especially in the regions of potential contamination sources. The present research was aimed at assessing the risk of groundwater contamination in the vicinity of the Tychy-Urbanowice municipal landfill systems (southern Poland), using the contamination index tool. Groundwater samples from the Quaternary Aquifer were collected from 22 piezometers located near the former landfill site (currently closed) and the new sealed landfill site during a monitoring period from 1995 to 2015. Extremely high values (1700) of the groundwater contamination index were observed in a piezometer that captures water beneath the abandoned landfill. Very high index values (154 or 216) were also noticed in piezometers located in the groundwater outflow from the landfill site. Results of interpolation for individual piezometers, which capture only the upper or lower part of an aquifer, are unrepresentative. The interpolation for the mean values of the contamination index increased the groundwater risk assessment.
Źródło:
Geological Quarterly; 2018, 62, 3; 496--508
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Mariupol Metallurgical Enterprises Influence on Ecological State of Surface Waters
Analiza wpływu zakładów metalurgicznych w Mariupolu na stan ekologii wód powierzchniowych
Autorzy:
Dan, O.
Neverova-Dziopak, E.
Butenko, E.
Kapustin, A.
Powiązania:
https://bibliotekanauki.pl/articles/385512.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
metalurgia
woda
ścieki
wskaźnik zanieczyszczenia wody
metallurgy
surface water
wastewater
Water Pollution Index
Opis:
This paper deals with the problem of environmental impact of metallurgical enterprises on ecological state and water quality of the Kalchyk and Kalmius rivers and the coastal zone of the Sea of Azov (Ukraine). These metallurgical enterprises Azovstal Iron & Steel Works and Ilyich Iron and Steel Works are situated in Mariupol city within the catchment area of the examined water bodies.
W artykule przedstawiono analizę wpływu zakładów hutniczych na stan ekologiczny i jakość wody rzek Kalczyk i Kalmius oraz strefy przybrzeżnej Morza Azowskiego. Zakłady hutnicze Azovstal Iron & Steel Works oraz Ilyich Iron and Steel Works znajdują się w Mariupolu i są usytuowane w zlewisku badanych akwenów wodnych.
Źródło:
Geomatics and Environmental Engineering; 2017, 11, 1; 25-31
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Changes of water pollution dynamics in Vistula river on Warsaw city area
Autorzy:
Dębska, K.
Rutkowska, B.
Powiązania:
https://bibliotekanauki.pl/articles/101015.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
water quality
Vistula river
Warsaw
salinity
biogenic elements
permanganate index
Opis:
The paper presents change of water quality within Vistula River in the city of Warsaw. Water samples for analysis were taken from four different measurement points in the period from February to June 2016. Based on the results of laboratory studies it was demonstrated that the Vistula River in Warsaw is exposed to the input of pollutants contributing to increase the salinity, especially in winter and early spring. The concentration of both chlorides and sulphates were highest in February and was decreasing in subsequent months of the year. At the same time it has been shown that during the entire study period the concentration of Cl– ion exceeded the limit values for water quality II class in Poland. While the SO4 2– concentrations in water samples taken in the winter months (February-March) exceeded the limit values for the second quality class, in April, it was within the acceptable range for II class water quality, and in May and June does not exceed the value referred to as standard for I class of water quality. Based on the analysis of indicators of nutrients (N-NH4 , N-NO3 , Ptot.) it was found that the Vistula is not exposed to eutrophication due to their low concentration, which indicates a very good water quality. At the same time permanganate index (CODMn) indicates a low organic load of Vistula.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2017, II/2; 849-861
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of heavy metal contamination of soils impacted by a zinc smelter activity
Autorzy:
Diatta, J B
Chudzinska, E.
Wirth, S.
Powiązania:
https://bibliotekanauki.pl/articles/14107.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
Miasteczko Slaskie Zinc Smelter zone
metallurgy
geoaccumulation index
cadmium
zinc
lead
metal contamination
soil contamination
copper
soil
environment protection
contamination factor
contamination degree
environment pollution
heavy metal
Opis:
Four metals (Cu, Zn, Pb and Cd) were assayed in soils within the impact zone of the Miasteczko Slaskie Zinc Smelter (southern Poland). The investigated area is afforested and has been subjected for a long time to intensive deposition of metal-bearing dusts. Soil pHKCl varied broadly from very acidic (pHKCl = 3.4) to slightly alkaline (pHKCl = 7.2). Organic carbon (Corg) content fluctuated within a large range, i.e., 5.5 - 66.4 g kg-1, whereas the cation exchange capacity (CEC) was in most cases markedly low (from 1.4 to 5.9 cmol(+)kg-1), with exception for two sites (C and D) exhibiting values of 26.8 and 15.1 cmol(+)kg-1, respectively. Total Zn, Pb and Cd contents exceeded manifold their respective levels in the Earth crust (reference value - RV)) as well as those suggested as background levels for Poland (BLP). The assessment of the contamination of soils by these metals was undertaken on the basis of geoaccumulation indices (lgeo), contamination factors Cl and degrees of contamination (Cdeg). The overall metal contamination represented practically two classes: low contamination for Cu; considerable to extreme contamination (in ascending order) for Zn, Cd, and Pb. The contribution (BLP-based assessment) of each metal to the degree of contamination index varied from 2.14 % (for Cu), via 26.33% (for Zn) to quite equally for Cd and Pb, both representing 35.22% and 36.32, respectively. It is worth pointing out that copper was the sole metal to threaten the least (Figure 1) the soils of the investigated ecosystem.
Źródło:
Journal of Elementology; 2008, 13, 1
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pollution and health risk assessment of water quality: a case study in Mohammedia prefecture in Morocco
Autorzy:
El morabet, R.
Berhazi, L.
Khan, R. A.
Bouhafa, S.
Khan, N. A.
Hakh, T.
Romaniv, A.
Powiązania:
https://bibliotekanauki.pl/articles/2055750.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
water quality assessment
water pollution index
ecological risk
non-carcinogenic risk
carcinogenic risk
ocena jakości wody
wskaźnik zanieczyszczenia wody
ryzyko ekologiczne
ryzyko nierakotwórcze
ryzyko rakotwórcze
Opis:
Purpose: Water is vital for the sustenance of every life form. Urbanization, growing population and industrial development has led to exploitation of water resources globally. This study assesses quality of water resources of Mohammedia prefecture. Design/methodology/approach: The water quality analysis was carried out based on physio-chemical and heavy metal concentrations. The physio-chemical analysis comprised of status of concentration, overall quality and water pollution index evaluation. The heavy metal evaluation consisted of Ecological Risk Index, non-carcinogenic risk and carcinogenic risk assessment. Findings: The landfill near Ben Nfifikh River reported insignificant (WPI<1) – low level of pollution (>1≤1.5) for surface and groundwater points. However, the groundwater for Zenata region was found to pose both carcinogenic (CRt > 0.0001, range 0.4-35.31) and non-carcinogenic risks (HQ>1, range 6 -34) of higher degree rendering it unfit for human consumption. Hence, this study concludes that groundwater resources should not as water supply; instead, Oud El Maleh River can serve as surface water source for meeting requirements of Zenata region. Research limitations/implications: The data obtained can be categorized as landfill area near river Nfifikh and landfill area near river El Maleh. Both areas have been investigated for groundwater and surface water quality assessment. Practical implications: This study demonstrates the need to study the characteristics of groundwater (depth, flow rate, water renewal, etc.) before arranging a waste dump. This problem is especially relevant for arid countries, since residents experience a shortage of water, as well as a lack of rainfall provides a weak renewal of groundwater, which can contribute to the accumulation of a higher concentration of carcinogens in groundwater and provide a high risk to public health. If policymakers in arid countries and decision-makers have effective water quality maps, then the country can be more efficiently managed water resources without risking the population. Originality/value: The current study is planned as a multi-stage, each of which is supposed to conduct field studies of groundwater and surface water quality with appropriate parameters, analysis of institutional reports and related scientific studies in order to create an effective water quality map for rational water use.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2022, 110, 2; 67--85
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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