Jordan E G, Kaufman D D, Kayser A J
J Environ Sci Health B. 1982;17(1):1-17. doi: 10.1080/03601238209372297.
The degradation of [carbonyl - 14C] - cis, trans-permethrin was studied in Dubbs fine sandy loam soil incubated at 10, 25, and 40 degrees C from 0 to 64 days. The most rapid degradation of permethrin to [carbonyl - 14C] - cis, trans -3- (2,2-dichloroethenyl)-2,2-dimethylcyclopropanecarboxylic acid (DCVA) and ultimately 14CO2 occurred at 25 degrees C. Rapid degradation to DCVA also occurred at 40 degrees C, however, further degradation of DCVA to 14CO2 was reduced. Permethrin degradation to 14CO2 was slowest at 10 degrees C. The degradation rate of trans-permethrin was greater than the cis-permethrin at all temperatures tested. The halflives of cis- and trans-permethrin were 55 and 14 days at 10 degrees C, 12 and 5 days at 25 degrees C, and 27 and 4 days at 40 degrees C, respectively. Compounds identified from treated soil were the original [carbonyl - 14C]-cis, trans-permethrin and the major degradation products cis-, and trans-DCVA.
在0至64天内，研究了在10、25和40摄氏度下培养的杜布斯细砂壤土中[羰基-14C]-顺式、反式氯菊酯的降解情况。氯菊酯向[羰基-14C]-顺式、反式-3-(2,2-二氯乙烯基)-2,2-二甲基环丙烷羧酸（DCVA）以及最终向14CO2的降解在25摄氏度时最为迅速。在40摄氏度时也迅速降解为DCVA，然而，DCVA进一步降解为14CO2的过程有所减少。氯菊酯降解为14CO2在10摄氏度时最慢。在所有测试温度下，反式氯菊酯的降解速率均大于顺式氯菊酯。顺式和反式氯菊酯在10摄氏度时的半衰期分别为55天和14天，在25摄氏度时为12天和5天，在40摄氏度时为27天和4天。从处理过的土壤中鉴定出的化合物为原始的[羰基-14C]-顺式、反式氯菊酯以及主要降解产物顺式和反式DCVA。
