نتایج جستجو برای: heavy metal evaluation index

تعداد نتایج: 1474400  

2015
Jiasheng Wen Feng Li Xiangyun Zeng Kaixuan Shen Haijun He Yanyan Liang Huayang Gan Jinwei Zhang Xiaolin Long Yansha Wei Thilo Hofmann

The concentrations of dissolved inorganic nitrogen (DIN; NO2−–N, NH3–N, and NO3−–N), PO43−–P, dissolved oxygen (DO), chemical oxygen demand (COD), five-day biological oxygen demand (BOD5), oil, Si, and seven heavy metals (Hg, Cr, Cu, As, Zn, Pb, and Cd) in seawater from the Dongzhaigang National Mangrove Nature Reserve of China in 2013 were determined. Except for the concentrations of the COD, ...

This study aims at investigating the effect of distance from source, species type and soil physical chemical properties on the absorption ability of heavy metals by tree species around the Nahavand cement factory. In the present research, soil and tree leaf (Pseudoacacia L, Populus nigra L, Elaeagnus angustifolia L, Fraxinus excelsior and Thuja orientalis L) samples were taken from 300, 500, 80...

Journal: Pollution 2019

The Kolleru Lake is a famous Ramsar wetland of international significance. In this study heavy metal contents in water and sediment samples are reported. It is found that certain potentially toxic metal ions like chromium (4.5-80 µg/L), copper (1-20 µg/L), manganese (1-313 µg/L) and zinc (1.2-57 µg/L) are present in variable quantities in the lake water. When normalized with respect to concentr...

The Kolleru Lake is a famous Ramsar wetland of international significance. In this study heavy metal contents in water and sediment samples are reported. It is found that certain potentially toxic metal ions like chromium (4.5-80 µg/L), copper (1-20 µg/L), manganese (1-313 µg/L) and zinc (1.2-57 µg/L) are present in variable quantities in the lake water. When normalized with respect to concentr...

ژورنال: سلامت و محیط زیست 2018

Background and Objective: Irrigation of agricultural lands with treated wastewater in the main part of the Varamin plain, the highly populated urban areas of the middle part of the plain, and the presence of industries have increased the actual risk of heavy metal contamination of groundwater. Therefore, the concentrations of heavy metals were investigated in this study in order to assess the r...

Journal: :international journal of environmental research 2014
n. oropeza-garcia r. hausler m. glaus r. vega-azamar r. romero-lopez

in vascular plants, the soil solution is transported from the roots to the leaves through smalldiameter vessels found in the xylem; this transport not only allows the nutrient uptake but also the accumulation of heavy metals in their shoots. by analogy to this phenomenon, the present study aimed at the evaluation of heavy metals transport (pb, cr, as, cd, zn, ni and al) in ph 4 and ph 8 solutio...

Journal: :international journal of environmental research 0
n. oropeza-garcia station expérimentale des procédés pilotes en environnement, école de technologie supérieure, université du québec, canada, 1100, rue notre-dame ouest, zip code h3c 1k3, montréal, québec, canada r. hausler station expérimentale des procédés pilotes en environnement, école de technologie supérieure, université du québec, canada, 1100, rue notre-dame ouest, zip code h3c 1k3, montréal, québec, canada m. glaus station expérimentale des procédés pilotes en environnement, école de technologie supérieure, université du québec, canada, 1100, rue notre-dame ouest, zip code h3c 1k3, montréal, québec, canada r. vega-azamar station expérimentale des procédés pilotes en environnement, école de technologie supérieure, université du québec, canada, 1100, rue notre-dame ouest, zip code h3c 1k3, montréal, québec, canada r. romero-lopez universidad veracruzana, facultad de ingeniería civil, lomas del estadio s/n zip code 91000, zona universitaria, xalapa, veracruz, méxico

in vascular plants, the soil solution is transported from the roots to the leaves through smalldiameter vessels found in the xylem; this transport not only allows the nutrient uptake but also the accumulation of heavy metals in their shoots. by analogy to this phenomenon, the present study aimed at the evaluation of heavy metals transport (pb, cr, as, cd, zn, ni and al) in ph 4 and ph 8 solutio...

Journal: :journal of tethys 0

an increase in heavy metal pollution in the soils of arak due to industrialization and urbanization has become an environmental problem. the region hosts several industrial facilities which are the main source for hazardous wastes which include electric, metal, automotive supply industry, food, machinery, and chemicals. soil samples were collected from these industrial areas in the central and ...

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 ...

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