Y. Yao et al., REDUCTIVE DECHLORINATION OF NON-ORTHO SUBSTITUTED POLYCHLORINATED-BIPHENYLS BY ULTRAVIOLET-IRRADIATION IN ALKALINE 2-PROPANOL, Chemosphere, 35(12), 1997, pp. 2891-2897
The photodechlorination pathways of 3,3',4,5,5'-pentachlorobiphenyl (3
,3',4,5,5'-PentaCB) and the related lower polychlorinated biphenyl con
geners irradiated at 254 nm in alkaline 2-propanol were elucidated. St
eric effect is the most important factor for controlling the dechlorin
ation pattern of these substrates. Electronic effect also influences t
he photoreactivity of chlorine substituents. (C) 1997 Elsevier Science
Ltd.