Influence of UV irradiation on the toxicity of phenylurea herbicides using Microtox® test
作者:F. Bonnemoy、B. Lavédrine、A. Boulkamh
DOI:10.1016/j.chemosphere.2003.10.027
日期:2004.2
Halogenated phenylurea herbicides are not very toxic by themselves to animals, but their exposure to UV light may significantly increase the toxicity of their solutions. Absorption of light may indeed induce a phototransformation of the herbicide with a possible formation of more toxic intermediate photoproducts. Fortunately in environmental conditions photolysis is usually slow and photoproducts do
卤代苯脲除草剂本身对动物毒性不大,但是暴露于紫外线下可能会大大增加其溶液的毒性。光的吸收确实可以引起除草剂的光转化,并可能形成毒性更大的中间光产物。幸运的是,在环境条件下,光解通常很慢,并且光产物不会明显积累。Microtox用于评估某些苯脲除草剂的粗辐照溶液的毒性。溴甲烷溶液显示出的初期毒性的急剧增加主要是由于中间光产物迅速消失。在敌草隆和甲磺隆的情况下,毒性是由少量光产物引起的,并且不会很快消失。