نتایج جستجو برای: organic pollutants

تعداد نتایج: 221574  

Journal: :Environmental Health Perspectives 2008

2013
Muhammad Umar Abdul Aziz

A photocatalyst is defined as a substance which is activated by adsorbing a photon and is capable of accelerating a reaction without being consumed [1]. These substances are invaria‐ bly semiconductors. Semiconducting oxide photocatalysts have been increasingly focused in recent years due to their potential applications in solar energy conversion and environmen‐ tal purification. Semiconductor ...

2007
Tim Lougheed

Shocked that chemical offshoots of his company's products were winding up in polar bears and seals, the CEO of 3M put an end to the existing version of Scotchgard® in 2000. Business observers were struck by how quickly this multinational corporation removed a flagship commodity worth hundreds of millions of dollars from the market. Now some scientific observers are becoming impressed by how qui...

Journal: :Anais da Academia Brasileira de Ciencias 2013
Estefan M da Fonseca José A Baptista Neto John McAlister Bernard Smith Marcos A Fernandez Fabiano C Balieiro

One of the main results of the processes related to urbanization is the contamination of the adjacent water bodies. Inserted in this context, the Rodrigo de Freitas lagoon is situated in the south zone of the city of Rio de Janeiro. This ecosystem receives several inputs containing all sorts of pollutants, including heavy metals. The present work aimed to study the partitioning of heavy metals ...

2015
Guanghong Yang Zhiwei Zhou Yanli Cen Xiaolin Gui Qibing Zeng Yunxia Ao Qian Li Shiran Wang Jun Li Aihua Zhang

Persistent organic pollutants in drinking water impose a substantial risk to the health of human beings, but the evidence for liver toxic effect and the underlying mechanism is scarce. This study aimed to examine the liver toxicity and elucidate the molecular mechanism of organic pollutants in drinking water in normal human liver cell line L02 cells and rats. The data showed that organic extrac...

2014
Anne Vested Aleksander Giwercman Jens Peter Bonde Gunnar Toft

Environmental contaminants such as persistent organic pollutants (POPs) are man-made bioaccumulative compounds with long half-lives that are found throughout the world as a result of heavy use in a variety of consumer products during the twentieth century. Wildlife and animal studies have long suggested adverse effects of exposure to these compounds on human reproductive health, which, accordin...

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