The article ‘A Rising Tide of Contaminants’ is about the alarming increase of chemicals and substances in the water bodies. The author, Deborah Blum, discusses the major reasons for the increase in the contaminants in the lakes and how the government should act for this issue. The two main reason for the increasing contaminants in the lakes is the unregulated increase of pharmaceutical and agricultural chemicals and the lack of federal government actions regarding chemical exposures. Scientists are suspecting that the production of the new pharmaceutical and agricultural chemicals are contaminating the water bodies through water sewage system. The ...
Biphenyls College Essays Samples For Students
2 samples of this type
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Question 1
PCBs
Polychlorinated Biphenyls (PCBs) are chlorinated hydrocarbons with two phenyl rings. They are stable, resistant to fire and possess good insulating properties. Hence, they were used widely before their ban in 1979, in transformers, capacitors, hydraulic machine lubricants, and oil based paints, adhesives, sealants, insulating and caulking material as well as in light ballasts. (US Environmental Protection Agency [USEPA], 2013). EH&S as well as FS personnel would have to handle PCBs when they indulge in building demolition, renovation, decontamination activities or in case of emergencies such as fire and explosion. PCBs present in electrical and building materials pose a ...
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