نتایج جستجو برای: chemical water pollution

تعداد نتایج: 940188  

2017
Lin Zhu Xun Li Chen Zhang Zengqiang Duan

Heavily polluted sediment is becoming an important part of water pollution, and this situation is particularly acute in developing countries. Sediment has gradually changed from being the pollution adsorbent to the release source and has influenced the water environment and public health. In this study, we evaluated the pollutant distribution in sediment in a heavily polluted river and agitated...

Journal: :Environment international 2015
Miriam L Diamond Cynthia A de Wit Sverker Molander Martin Scheringer Thomas Backhaus Rainer Lohmann Rickard Arvidsson Åke Bergman Michael Hauschild Ivan Holoubek Linn Persson Noriyuki Suzuki Marco Vighi Cornelius Zetzsch

Rockström et al. (2009a, 2009b) have warned that humanity must reduce anthropogenic impacts defined by nine planetary boundaries if "unacceptable global change" is to be avoided. Chemical pollution was identified as one of those boundaries for which continued impacts could erode the resilience of ecosystems and humanity. The central concept of the planetary boundary (or boundaries) for chemical...

2013
YU Xin ZHANG Shenghua

Drinking water is essential for the health, everyday life and social development of human beings. Its importance is evident to all the people. Because China now is experiencing an unprecedented urbanization progress in the world, its demand for enough and clear drinking water is expanding every year. Unfortunately, many cities and towns in China are suffering from the pollution of source water,...

2014
C.Santhosh Kumar V.Ashok Prabu

Physico-chemical parameters, species composition and seasonal variation in phytoplankton abundance have been studied in other regions of Indian coastal waters (Saravanakumar et al., 2008; Vengadesh Perumal et al., 2009). For confirming the good quality of water resources large number of physico-chemical parameters, extend and source of any pollution load must be know for which monitoring of phy...

Journal: :BMC Emergency Medicine 2007
Jane Williams Darren Walter Kirsty Challen

BACKGROUND A number of significant chemical incidents occur in the UK each year and may require Emergency Departments (EDs) to receive and manage contaminated casualties. Previously UK EDs have been found to be under-prepared for this, but since October 2005 acute hospital Trusts have had a statutory responsibility to maintain decontamination capacity. We aimed to evaluate the level of prepared...

1996
Robert S. Kerr Charles J. Newell Steven D. Acree Randall R. Ross Scott G. Huling

varying degrees of water solubility. Some additives (e.g., methyl tertiary-butyl ether and alcohols) are highly soluble. Other components (e.g., benzene, toluene, ethylbenzene, and xylenes) are slightly soluble. Many components (e.g., ndodecane and n-heptane) have relatively low water solubility under ideal conditions. Physical and chemical properties which affect transport and fate of selected...

2016
Laura J. Carter Jim J. Ryan Alistair B.A. Boxall

Pharmaceuticals can enter the soil environment when animal slurries and sewage sludge are applied to land as a fertiliser or during irrigation with contaminated water. These pharmaceuticals may then be taken up by soil organisms possibly resulting in toxic effects and/or exposure of organisms higher up the food chain. This study investigated the influence of soil properties on the uptake and de...

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, ...

Rapid population growth and increasing demand for the modern settlement has led to the increase of environmental pollution. Limestone quarry is one among the activities that affect environment and ecosystem in Pemba Island-Zanzibar. Quarrying activities brought an inevitable destruction to the environments ranging from excavation, soil and land degradation, loose of biodiversity and water pollu...

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