نتایج جستجو برای: river pollution index

تعداد نتایج: 537812  

2015
Nida Rizvi Deeksha Katyal

River Hindon is an important river catering the demand of highly populated rural and industrial cluster of western Uttar Pradesh, India. Water quality of river Hindon is deteriorating at an alarming rate due to various industrial, municipal and agricultural activities. The present study aimed at identifying the pollution sources and quantifying the degree to which these sources are responsible ...

Journal: :محیط شناسی 0
عبدالرضا کرباسی دانشکده محیط زیست دانشگاه تهران غلامرضا نبی بیدهندی دانشکده محیط زیست دانشگاه تهران فریدون غضبان دانشکده محیط زیست دانشگاه تهران شکوه کوکبی حبیب زاده کارشناس ارشد مهندسی محیط زیست دانشکدة محیط زیست دانشگاه تهران

in the recent years, sediments are used for the assessment of pollution. since sediments have been in contact for a long time with over lying water, therefore they have been able to adsorb pollution on to their surface. in the present investigation, the surficial sediments of siahrud river have been analyzed. the loose, sulphide and organic bonds of metals with various sedimentary phases has be...

Journal: : 2023

The article considered the ecological index of water quality, which is used for planning protection activities, developing measures, carrying out and economic zoning, mapping; pollution index, determined by hydrochemical indicators; modified Horton quality models; Water Quality Index proposed Canadian Council Ministers Environment; Said to assess general use; in river subbasin a certain year; N...

Journal: :Chemosphere 2007
Grigorii M Chuiko Donald E Tillitt James L Zajicek Boris A Flerov Vera M Stepanova Yuri Y Zhelnin Vera A Podgornaya

The Rybinsk Reservoir (Russia) is the largest artificial waterbody in Europe (4550 km2) and provides drinking water for population of the cities located along the coast line. Industrialization in Cherepovets at the northeastern portion of the reservoir, including one of the largest metallurgical facilities in Europe, has resulted in chemical contamination of the reservoir. The extent of polychl...

ژورنال: اکوبیولوژی تالاب 2019
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Heavy metals tend to be adsorbed and accumulated in sediments as opposed to water or suspended solids. Sediments and biota bodis can act as a final sink for heavy metals in the aquatic environments. They accumulate through the food chain posing potential biological and ecological risks. Therefore, research on the heavy metal concentrations in aquatic ecosystems can help to protect human health ...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2017
F G Araújo C N Morado T T E Parente F J R Paumgartten I D Gomes

The Funil Reservoir receives a large amount of xenobiotics from the Paraíba do Sul River (PSR) from large number of industries and municipalities in the watershed. This study aimed to assess environmental quality along the longitudinal profile of the Paraíba do Sul River-Funil Reservoir system, by using biomarkers and bioindicators in a selected fish species. The raised hypothesis is that Funil...

Journal: :International Journal of Environmental Research and Public Health 2012

2018
Weili Duan Bin He Yaning Chen Shan Zou Yi Wang Daniel Nover Wen Chen Guishan Yang

Comprehensive understanding of the long-term trends and seasonality of water quality is important for controlling water pollution. This study focuses on spatio-temporal distributions, long-term trends, and seasonality of water quality in the Yangtze River basin using a combination of the seasonal Mann-Kendall test and time-series decomposition. The used weekly water quality data were from 17 en...

Journal: :Environmental science. Processes & impacts 2015
Ce Wang Mike Cyterski Yujie Feng Peng Gao Qingfang Sun

To control source pollution and improve water quality, an understanding of the spatiotemporal characteristics of organic contaminant concentrations in affected receiving waters is necessary. The Songhua River in northeast China is the country's third-largest domestic river and loadings of organic contaminants along an industrialized section have made it the focal point of a national pollution r...

2008
Peeter Ennet Karin Pachel Vladimir Viies Lembit Jürimägi

This paper describes the usage of linked models for assessment of water quality in a river basin. River water quality model QUAL2K and the Wennerblom (Älvsborg) diffused pollution model were simultaneously applied for water quality and land-based pollution estimations. A software tool was developed to control the data flow between these models and databases. This tool provides automatic formati...

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