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Wyszukujesz frazę "river pollution" wg kryterium: Temat


Wyświetlanie 1-9 z 9
Tytuł:
Speciation and contamination assessment of metals in the sediments from the Lanzhou section of the Yellow River, China
Autorzy:
Jun, R.
Zhen, S.
Ling, T.
Jianxiu, H.
Powiązania:
https://bibliotekanauki.pl/articles/207835.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Yellow River
China
environmental risks
heavy metals
river pollution
Żółta rzeka
Chiny
zagrożenia dla środowiska
metale ciężki
Opis:
Heavy metals such as Cu, Fe, Mn, Ni, Zn, Cd, Cr and Pb in surface sediments from the Lanzhou Section of the Yellow River were investigated to analyze chemical speciation by a sequential "extraction and to evaluate their pollution level. The metal contents in the sediments were found to be in the range of (mg/kg) Cu 15.52-57.50, Fe 19 600.33-48 350.00, Mn 493.50-698.93, Ni 9.34-53.20, Zn 64.86-168.57, Cd 1.09-4.25, Cr 70.00-139.33, Pb 5.66-19.13. The arrangement of metal contents from higher to lower was: Fe > Mn > Cr > Zn > Ni > Cu > Pb > Cd. Fe, Mn and Cu and could have the same source according to their correlations. The quantity of immobile speciation (residual) was observed to be higher when compared with mobile speciation (acid soluble, reducible, and oxidizable) of Fe, Cu, Cd and Cr. The highly enrichment factors of Ni and Cr created a high environmental risk. The order of contamination level for heavy metals in sediment was Cr > Cd > Pb > Cu > Mn > Ni > Fe > Zn on the basis of performance of the geoaccumulation index, enrichment factor and pollution load index.
Źródło:
Environment Protection Engineering; 2017, 43, 3; 113-124
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of Land Pollution with Heavy Metals along Sitnica River, Kosovo
Autorzy:
Abazi, Albona Shala
Sallaku, Fatbardh
Ukaj, Shkëlzim
Bytyçi, Pajtim
Spahiu, Mimoza Hyseni
Powiązania:
https://bibliotekanauki.pl/articles/123367.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
pollution
heavy metals
land
Sitnica river
Opis:
The main river of the Kosovo valley is the Sitnica River, which collects a large number of streams, recipients of wastewaterfrom various urban and industrial centers. The blockage of Sitnica river with waste and non-regulation of the bedding of this river makes this river flood tens of acres of worked ground surface through its course, causing great damage every spring and autumn. Uncontrolled discharge of heavy metals into the contaminated terrestrial environments ensures their transfer to plants, animals and humans and results in an impact on the environment and public health. Determination of the heavy metals concentration level for the assessment of soil pollution along the Sitnica River course was also the main purpose of this study, which was carried out in 2016. For analysis, 8 soil samples were taken at depths of 30–50 cm. From the analysis of the data it was noticed that the content of heavy metals such as Zn, Cd, Pb, Cr in some analyzed samples exceeds the maximum allowed values. The findings indicate high values of metal pollution in the samples taken in meadows as well as the agricultural lands stretching around the river.
Źródło:
Journal of Ecological Engineering; 2019, 20, 11; 23-28
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantification of Heavy Metals in the Sediment ecosystem of Ulhas River flowing along Dombivli City of Mumbai
Autorzy:
Jadhav, Amol M.
Singare, Pravin U.
Powiązania:
https://bibliotekanauki.pl/articles/1194028.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Dombivli
Mumbai
Ulhas River
heavy metals
industrial pollution
sediments
Opis:
The Dombivli city near Mumbai has rapid industrialized. However the improper environmental planning has resulted in discharge of industrial waste effluents from the industrial belt into the Ulhas River. These wastes from these industries include various toxic heavy metals which subsequently accumulate in the sediments of Ulhas River. This day by day increasing tremendous pollution load has provoked us to carry the systematic and detailed study of heavy metal content in the sediment samples collected along the Ulhas River along the Dombivli City, near Mumbai. The study was conducted in year 2012 and 2013. The study was carried out in along the banks of Ulhas River near the discharge of effluents from Dombivli Industrial belt Phase I and Phase II. Accordingly the sampling points were identified. The analysis for the majority of the toxic heavy metals like Cadmium (Cd), Copper (Cu), Nickel (Ni), Chromium (Cr), Cobalt (Co), Iron (Fe), Lead (Pb), Mercury (Hg), Arsenic (As) and Zinc (Zn), in sediment samples was done. From the results of our study, it can be concluded that there is a need of systematic and regular monitoring of pollution level along the Ulhas River so as to generate the data on accumulation of heavy metals in the river sediments which will further help in improving the industrial waste treatment technology adopted along the Dombivali industrial belt. It is expected that such scientific studies will help to gauge the extent of pollution in order to avoid long term irreparable damage to the ecosystem.
Źródło:
World Scientific News; 2015, 10; 1-16
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania zawartości metali ciężkich w zlewni rzeki Biebrzy i jej trzech dopływów
The study of heavy metals content in the catchment area of the Biebrza River and three tributaries
Autorzy:
Kazimierowicz, Z
Kazimierowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/399852.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
metale ciężkie
osady denne
zanieczyszczenia
rzeka
heavy metals
bottom sediments
pollution
river
Opis:
Pobrano próbki osadu dennego w 11 punktach pomiarowych rzeki Biebrzy oraz określono zawartości sześciu metali (Cu, Cr, Co, Ni, Cd i Zn). Obliczono średnią arytmetyczną, medianę oraz odchylenie standardowe. Stwierdzono, że źródłami badanych metali ciężkich w osadach dennych są między innymi: zanieczyszczenia z pól i łąk (domieszki środków ochrony roślin oraz nawozów sztucznych), zrzuty ścieków bytowych i komunalnych z lokalnych oczyszczalni ścieków, zrzuty ścieków z zabudowań wiejskich oraz zanieczyszczenia pochodzenia antropogenicznego. Rozpatrywanie zanieczyszczenia osadów dennych metalami ciężkimi są potrzebnym narzędziem do monitoringu środowiska wodnego. Ciągły monitoring zawartości metali w osadach pozwoli na przeciwdziałanie skutkom zagrożenia życia biologicznego w zbiorniku wodnym, które może wystąpić w przypadku notorycznych przekroczeń dopuszczalnych zawartości szkodliwych substancji.
Sediment samples were taken in 11 measuring points of the Biebrza River and determined the contents of six metals (Cu, Cr, Co, Ni, Cd and Zn). Arithmetic mean, median and standard deviation were calculated. The sources of heavy metals in bottom sediments are: pollutants of fields and meadows (admixtures of plant protection products and fertilizers), discharges of domestic sewage and municipal from local wastewater treatment plants, wastewater discharges from rural buildings and pollutions of anthropogenic origin. Research of pollution of bottom sediments with heavy metals are needed tool for monitoring the aquatic environment. Continuous monitoring metal content of the sediments will counteract the effects of the threat of biological life in the water reservoir, which may occur in the case of notorious exceeded permissible content of harmful substances.
Źródło:
Inżynieria Ekologiczna; 2014, 40; 25-32
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Akumulacja osadów na równinach zalewowych rzek silnie zmienionych antropogenicznie: górna Wisła i Odra
Sediment accumulation on alluvial plains of the heavily impacted river reaches: upper Vistula and Odra, southern Poland
Autorzy:
Ciszewski, D.
Czajka, J.
Powiązania:
https://bibliotekanauki.pl/articles/2074705.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
osady rzeczne
akumulacja
zmiany koryta
skażenie
metale ciężkie
river sediments
accumulation
channelization
pollution
heavy metals
Opis:
Overbank sediment profiles of the channelized and heavily polluted Vistula and Odra rivers were investigated in southern Poland. The sediments are usually represented by sandy layers about a dozen centimetres thick, intercalated with black sandy muds few centimetres thick and rich in organic matter. Accumulation of these sediments started by the end of 19th century. The sediments are contaminated with heavy metals in amounts exceeding background values by two orders of magnitude and contain coal particles dispersed in black layers. These fine sediments initially accumulated over gravel bars at the channel banks due to lateral channel stabilization by stony groynes and bank revetments, constructed in 19th and 20th century. Progressively the sediments, which are up to 4 m thick, became a part of 20–30 m wide floodplain zones along many reaches of the upper Vistula and Odra. The distribution of these sediments is related to the degree of channel narrowing and incision induced by 19th and 20th century channelization.
Źródło:
Przegląd Geologiczny; 2009, 57, 7; 576-576
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fate and Management of Pollution of Hexavalent Chromium Cr(VI) and Heavy Metals in the Zarqa River Basin in Jordan
Autorzy:
Shammout, Maisa'a W.
Shatanawi, Muhammad
Awwad, Akl M.
Powiązania:
https://bibliotekanauki.pl/articles/2026728.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Zarqa River Basin
industrial activity
water pollution
hexavalent chromium
Cr(VI)
heavy metals
decision maker
Opis:
This paper focused on the fate of pollution and management of hexavalent chromium Cr(VI) and heavy metals in the Zarqa River Basin in Jordan. The Zarqa River basin was selected in this research because it contains the majority of Jordanian industries, which are the main source of pollutants including Cr(VI) and heavy metals. This will help in assisting water resource management organizations in decision making when coping with pollution. Industries related to sources and impacts of Cr(VI) and heavy metals were identified, and the administration measures were highlighted according to their role in improving water quality. An analysis of water samples along the Zarqa River was conducted between 2016-2019 to evaluate the heavy metals concentrations and compare the results with the Jordanian standards. Findings showed that Cr(VI) was below the allowable limits (<5 μg/l), and the heavy metals were within the allowed limits set forth in the Jordanian Standard. The ranges of water analysis values (μg/L) were; DO 4640–6480, Fe <40–80, Mn 20–128, Co <20–30, Pb 80–190, Zn 70–100, and Cu <80–190, Al 700–730, V <70–100, B <300–351, Si 1100–1800, Ni 30, and Cd <10. These findings indicated that the quality of the Zarqa River would not cause hazardous effects. However, this was not the case few years ago due the current protection measures. At present some industries have been relocated from the Zarqa Basin to an area that does not pose any environmental hazards, while the rest of industries remained in the basin, but they have established an on-site treatment plant for industrial waste under the control of Jordanian government, and the enforcement of the environmental protection law. These measures must be monitored and updated by decision makers in a sustainable manner to prevent any water pollution.
Źródło:
Journal of Ecological Engineering; 2022, 23, 2; 108-115
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of heavy metal concentrations in waters of fishponds affected by the former lead and zinc mine in Southern Poland
Autorzy:
Szarek-Gwiazda, E.
Ciszewski, D.
Powiązania:
https://bibliotekanauki.pl/articles/207762.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Myriophyllum spicatum
trace elements
transport
pollution
reservoir
heavy metals
river
metale ciężkie
przetwórstwo metali
staw rybny
potok Matylda
Opis:
The fluctuations of heavy metal (Cd, Pb, Zn, Mn and Fe) concentrations and physicochemical parameters of water were studied for five fishponds located in the Matylda catchment affected by the former Pb and Zn ore mine in the Upper Silesian Industrial Region, southern Poland. Generally, metal concentrations in dissolved phase in pond water were low for most of the year, but their drastic increases were periodically observed (up to Cd 5.8, Pb 147.3, Zn 800.3, Mn 987.8, and Fe 2532.8 μg·dm–3). The factors determining metal concentrations in the pond water have been discussed.
Źródło:
Environment Protection Engineering; 2017, 43, 1; 121-136
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Level of Soil Pollution in the Aksu River Basin as a Result of Anthropogenic Impact
Autorzy:
Urymbaeva, Aigul A.
Bazarbayeva, Tursynkul A.
Mukanova, Gulzhanat A.
Umbetbekov, Askhat T.
Mamyrbekova, Aizhan K.
Kubesova, Gulnar T.
Powiązania:
https://bibliotekanauki.pl/articles/2027878.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
soil pollution
heavy metals
Aksu river basin
universal-comparative-geographical method
pasture degradation
phytotoxicity
soil reclamation
Clark concentration
Opis:
As the main purpose of this article, the authors consider the level of soil pollution in the Aksu River basin as a result of anthropogenic impact, in which factors of anthropogenic transformation of soils in different zones play an important role, as well as processes occurring in soils as a result of their impact. This article highlights the research of the main analyses carried out, which showed that the anthropogenic transformation of soils within the surveyed territory is multifactorial and complex. As an assumed result, the validity of which is analyzed in this article, it can be considered that the degree and forms of manifestation of anthropogenic transformation of foothill soils depend on their use, as one criterion of which is considered the use of such soil for arable land, including irrigated arable land, in which the degradation of mountain soils is mainly associated with pasture loads during a certain period. As a research question, it remains to be considered whether this is really the case or whether the present territory is subject to a different anthropological impact.
Źródło:
Journal of Ecological Engineering; 2021, 22, 10; 225-234
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola zawiesin w transporcie metali ciężkich w wodach powierzchniowych na przykładzie Kłodnicy
The role of suspended solids in the transport of heavy metals in surface water, exemplified by the Klodnica River (Upper Silesia)
Autorzy:
Barbusiński, K.
Nocoń, W.
Nocoń, K.
Kernert, J.
Powiązania:
https://bibliotekanauki.pl/articles/236838.pdf
Data publikacji:
2012
Wydawca:
Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:
woda rzeczna
zawiesiny
osady denne
metale ciężkie
transport zanieczyszczeń
river water
suspended solids
bottom sediments
heavy metals
pollution transport
Opis:
Przedstawiono wyniki badań zawartości jonów wybranych metali ciężkich (Zn, Pb, Cd, Cr, Cu, Ni, Mn i Fe) w zawiesinach zawartych w wodzie powierzchniowej, na przykładzie Kłodnicy (Górny Śląsk). Próbki wody z zawiesinami pobrano w 8 punktach zlokalizowanych wzdłuż całej długości rzeki. Uzyskane wyniki badań interpretowano zgodnie z niemiecką klasyfikacją LAWA. Stwierdzono korelację pomiędzy zawartością jonów badanych metali ciężkich a zawartością żelaza w zawiesinach. Stwierdzono również, że zawartość metali w zawiesinach obecnych w wodzie z Kłodnicy była mniejsza niż w zawiesinach w Odrze i jej dopływach. Wykazano trównież, że zawartość jonów metali ciężkich w zawiesinach była kilkakrotnie większa niż w osadach dennych, co świadczyło o istotnej roli zawiesin w procesie przemieszczania się zanieczyszczeń wraz z biegiem rzeki. Duże zmiany zawartości jonów metali ciężkich w zawiesinach, obserwowane zarówno w trakcie prowadzenia badań, jak i wynikające z danych literaturowych, wskazują na celowość prowadzenia badań nad dynamiką tych zmian.
Concentrations were measured of eight heavy metals (Zn, Pb, Cd, Cr, Cu, Ni, Mn, Fe) found in the suspended solids of surface water. The Klodnica River was chosen as an example to demonstrate the role of suspended solids in heavy metal transport. Water samples containing suspended solids were collected at eight points located along the entire length of the river. The results were interpreted using the German classification LAWA. A correlation was found to occur between the heavy metal ion content and the iron content of the suspended solids. Comparative analysis has demonstrated that the heavy metal content of suspended solids was lower in the Klodnica than in the Odra River and its tributaries. Analysis of the results has also revealed that the heavy metal ion content of suspended solids was several times that of the bottom sediments. This substantiates the significant role of suspended solids in the transport of pollutants down the river. Considerable changes in the heavy metal ion content of suspended solids (not only observed during this study but also reported in the literature) corroborate the need of investigating the dynamics of these changes.
Źródło:
Ochrona Środowiska; 2012, 34, 2; 33-38
1230-6169
Pojawia się w:
Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-9 z 9

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