Search results
Results from the WOW.Com Content Network
Polychlorinated biphenyls (PCBs) are organochlorine compounds with the formula C 12 H 10−x Cl x; they were once widely used in the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids for electrical equipment. [2]
Monsanto was acknowledged at the time of the settlement to have ceased making PCBs in 1977, though State Impact of Pennsylvania reported that this did not stop PCBs from contaminating people many years later. [13] State Impact of Pennsylvania stated "In 1979, the EPA banned the use of PCBs, but they still exist in some products produced before ...
Until the 1970s, when the use of polychlorinated biphenyls (PCBs) was banned due to health and environmental concerns, PCBs were used as a transfer agent in carbonless copy paper. [ 3 ] [ 4 ] [ 5 ] PCBs are readily transferred to human skin during handling of such papers, and it is difficult to achieve decontamination by ordinary washing with ...
The ban did not require electrical utilities, for example, to remove 10 year old transformers with a useful life of 50 years from power poles. Many older transformers and other large electrical components that contained PCBs that were manufactured when it was still legal remain in use.
Exposure to the coplanar stereoisomer 3,3',4,4',5,5'-hexabromobiphenyl (but not the non-coplanar stereoisomer) in genetically susceptible mice is known to cause immunotoxicity and disorders related to the central nervous system, and even at doses as low as 2.5 mg/kg, excess neonatal fatalities are observed (LD 50 is from 5–10 mg/kg). [1]
AOL latest headlines, entertainment, sports, articles for business, health and world news.
Read more The post 10 Old Tech Gadgets Worth a Pretty Penny Today appeared first on Wealth Gang. ... Stylists share 7 items the rich and famous are actually wearing right now.
As the nearest approved landfill for PCBs was in Alabama, officials decided to build their own within North Carolina. The government evaluated 90 potential sites before narrowing down their choices to two: a section of the Chatham County sanitary landfill and a farm owned by Carter and Linda Pope near the community of Afton in Warren County.