Environmental pollution is one of the world's most serious problems, requiring the highest priority. Polychlorinated biphenyls (PCBs) together with polychlorodibenzop-dioxins (PCDDs) and polychlorodibenzofurans (PCDFs) are representative of persistent organic pollutants. Persistence is related to the physico-chemical characteristics of these molecules. Studies have demonstrated their long-term accumulation in soils and sediments, and also progressive bioaccumulation in food chains. Their toxicity is comparable to that of other halogenated aromatic compounds and a major health risk is associated with long-term exposure. Global production of PCBs was estimated to be in the order of 1.5 million tons between the 1930s and 1970s (USSR, not included). Mixtures of PCBs were used for their effective dielectric properties and their thermal stability. These were commercialized under several product names (Aroclor-UK, USA; Sovcor-USSR; Kanechlor-Japan; Delor, Hydelor,......

Join Now to view the rest of this term paper!
Members: Login to view this research paper.

Title: Monitoring Native Vegetation On A Dumpsite Of Pcb-Contaminated Soil
Approximate Word Count: 1740
Approximate Pages: 7 (250 words per double-spaced page)

With the Term Papers Lab Membership Pass, you get instant access to every essay on this site, including this essay on Monitoring Native Vegetation On A Dumpsite Of Pcb-Contaminated Soil, for as long as you remain a member.

Other essays sites charge almost $100 for a single term paper. At Term Papers Lab, you can get instant access to over 100,000 research papers for as little as $29.95!