Photodegradation of 2,2{prime},5,5{prime}-tetrachlorobiphenyl in hexane
- Research Center for Eco-Environmental Sciences, Beijing (China)
Polychlorinated biphenyls (PCBs) are of continuing concern due to their ubiquitous occurrence in the environment and potential health impacts on the mankind. For the environmental degradation of PCBs, photolysis may be one of the major pathways regardless of their chemical stabilities. Previous studies noted that PCBs degrade mainly with stepwise dechlorination in both aqueous and organic media. When ortho and other positions are simultaneously substituted by chlorines, it is the ortho chlorines that are lost preferentially. The photchemical behavior varies for different PCB cogeners, which may have different pathways of photodecomposition. In this study, trace amounts of tetrachlorobiphenyl was exposed in hexane under xeonon lamp to study its pathway of photodegradation. 7 refs., 2 figs.
- OSTI ID:
- 241241
- Journal Information:
- Bulletin of Environmental Contamination and Toxicology, Vol. 56, Issue 4; Other Information: PBD: Apr 1996
- Country of Publication:
- United States
- Language:
- English
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