摘要：Photodieldrin formed by photoisomerization from dieldrin in wool was investigated. Photodieldrin was extracted by refluxing in methanol, purified by Florisil column chromatography after methanol was evaporated, and determined by gas chromatography with 63Ni-ECD. The recovery of photodieldrin from wool and woollen sweaters was 96% and 97% for 1 ppm, and 101% and 101% for 10 ppm, respectively. The detection limit was 0.05 ppm. The ratio of photodieldrin to dieldrin in wool irradiated for 3 hr in the light, increased to more than 10%, and were 0.2%, 11.5%, and 17.5% for 6 hr in 300-600 lux, 4000-16000 lux, and 20000-86000 lux, respectively. The photodieldrin concentration in 5 kinds of commercial wool was 0.12-0.45 ppm and the ratio of photodieldrin to dieldrin was 0.092-1.1%.
关键词：photodieldrin;dieldrin;photoisomerization of moth-proofing agent;commercial wool;ECD gas chromatography
