为考察阿特拉津在使用过程中的环境行为，实验在模拟太阳光照射下，以叶绿素铜钠盐作为光敏化剂，探讨了阿特拉津光降解的影响因素及降解动力学．结果表明，阿特拉津直接光解较慢，叶绿素铜钠加入可以促进阿特拉津的光降解，具有敏化作用，当阿特拉津初始浓度为2 mg·L－1，加入8 mg·L－1叶绿素铜钠时，阿特拉津的降解率最大，达52．4％．pH影响阿特拉津的光敏化降解，在pH ＝7时降解率较大，且随着光照时间的增加，阿特拉津的降解率也随之提高．阿特拉津的光降解反应符合一级反应动力学，半衰期为174 min．
In order to investigate the environmental behavior of atrazine in the process of utilization, the influences and the kinetics of chlorophyll photosensitized degradation of atrazine in water under simulated solar irradiation were investigated. The results showed that: sodium copper chlorophyll effectively catalyzed the degradation of atrazine. When the initial concentration of atrazine was 2 mg·L-1 , and the dosage of sodium copper chlorophyllin was 8 mg·L-1 , the maximum degradation ratio of atrazine was 52. 4%. The degradation ratio of atrazine was pH dependent and reached the maximum at pH 7. Atrazine degradation ratio increased with illumination time, and followed pseudo first?order kinetics with a half?life of 174 min.
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