نتایج جستجو برای: chemical water pollutants

تعداد نتایج: 907257  

2007
H. Nyati

A survey of the microbiological and chemical quality of water supplies in the Bindura urban and peri-urban area was carried out over a three year period from January 2000 to July 2003. Bindura is the provincial city of Mashonaland Central, situated 88 km from the national capital, Harare. Large-scale farming and mining activities in the area predispose water bodies to eutrophication and chemica...

Journal: :Journal of environmental biology 2009
Neera Srivastava Garima Harit Rama Srivastava

Annual survey of Jalmahal, Amer, Nevta and Ramgarh lakes, has been conducted for one calendar year, to determine physicochemical characteristics of water and the levels of zinc (heavy metal) and endosulfan (an organochlorine pesticide). These lakes are situated on the outskirts of Jaipur city. Changes in pollutants correlated well with the physico-chemical characteristics of water bodies. Resul...

Journal: :global journal of environmental science and management 2016
s. de s. maiti t. hazra a. debsarkar a. dutta

landfill leachates are potential threats for environmental degradation. this study was conducted to determine the leachate quality, to identify the dominant pollutants and to evaluate the leachate pollution potential of an active and closed dumping ground of an uncontrolled municipal solid waste landfill site in kolkata, india using leachate pollution index. the results of the physico-chemical ...

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...

2017
Hugo Voisin Lennart Bergström Peng Liu Aji P. Mathew

Nanocellulose is a renewable material that combines a high surface area with high strength, chemical inertness, and versatile surface chemistry. In this review, we will briefly describe how nanocellulose is produced, and present-in particular, how nanocellulose and its surface modified versions affects the adsorption behavior of important water pollutants, e.g., heavy metal species, dyes, micro...

2017
Gab-Joo Chee

Population growth and industrialization have caused serious environmental pollution. Environmental pollution has become global issues beyond a region or a country, and is the introduction of contaminants, which are synthetic chemicals, pesticides, and heavy metals etc, into environmental system. Biopersistent organic chemicals of them particularly cause instability, disorder, harm or discomfort...

Journal: :تحقیقات نظام سلامت 0
سعید راثی نظامی دانشجوی دکتری، گروه مهندسی عمران- محیط زیست، دانشکده محیط زیست، دانشگاه تهران، تهران، ایران مهرداد نظری ها استادیار، گروه مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران، تهران، ایران اکبر باغوند دانشیار، گروه مهندسی محیط زیست، دانشکده محیط زیست، دانشگاه تهران، تهران، ایران علی مریدی - استادیار، گروه مهندسی منابع آب، دانشکده مهندسی آب و محیط زیست، دانشگاه صنعت آب و برق شهید عباسپور، تهران، ایران

background: the spread of urbanization in floodplains as well as increase of industrial and agricultural activities in river discharges may lead to water pollution by physical, chemical and biological pollutants. one of the major concerns in monitoring the water resources system is indentifying major quality parameters and determining a relationship between physical and chemical parameters. thi...

2013
S. V. A. R. Sastry B. Sarva Rao

The most important necessity for life is water. Shortage of clean & fresh drinking water leads to suffering. This is mainly contributed by generation of sewage waste mixed with the water bodies, due to unplanned urbanization and has largely contributed to the causing severe water pollution. Pollutants discharged in waste waters can be toxic to aquatic life and cause natural waters to be unfit t...

2016
Tahera Akter Fatema Tuz Jhohura Fahmida Akter Tridib Roy Chowdhury Sabuj Kanti Mistry Digbijoy Dey Milan Kanti Barua Md Akramul Islam Mahfuzar Rahman

BACKGROUND Public health is at risk due to chemical contaminants in drinking water which may have immediate health consequences. Drinking water sources are susceptible to pollutants depending on geological conditions and agricultural, industrial, and other man-made activities. Ensuring the safety of drinking water is, therefore, a growing problem. To assess drinking water quality, we measured m...

Journal: :Molecules 2018
Wei Zhang Qing Xiu Liu Zhi Hou Guo Jun Sheng Lin

Water pollution has become one of the leading causes of human health problems. Low molecular weight pollutants, even at trace concentrations in water sources, have aroused global attention due to their toxicity after long-time exposure. There is an increased demand for appropriate methods to detect these pollutants in aquatic systems. Aptamers, single-stranded DNA or RNA, have high affinity and...

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