Mosier A R, Guenzi W D, Miller L L
Science. 1969 May 30;164(3883):1083-5. doi: 10.1126/science.164.3883.1083.
Both as a pure solid and in hexane solution, DDT readily decomposed when irradiated with ultraviolet light (2537 angstroms). Principal products identified by gas-liquid and thin-layer chromatography from irradiations of the solid phase were 1,1-dichloro-2,2-bis (p-chlorophenyl) ethane, 1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene, and 4,4'-dichlorobenzophenone. 1,1-Dichloro-2,2-bis(p-chlorophenyl) ethane and hydrochloric acid were identified from irradiated solutions of DDT in hexane. On the basis of products obtained, quantum yields, scavenger experiments, and other chemical tests, a nonchain, free-radical mode of degradation is proposed.
无论是作为纯固体还是在己烷溶液中，滴滴涕（DDT）在紫外线（2537埃）照射下都很容易分解。通过气液色谱法和薄层色谱法从固相照射中鉴定出的主要产物是1,1-二氯-2,2-双（对氯苯基）乙烷、1,1-二氯-2,2-双（对氯苯基）乙烯和4,4'-二氯二苯甲酮。从己烷中照射的滴滴涕溶液中鉴定出了1,1-二氯-2,2-双（对氯苯基）乙烷和盐酸。根据所得产物、量子产率、清除剂实验及其他化学测试，提出了一种非链式自由基降解模式。
