Degradation Kinetics and Ecotoxicity of 3,4-Dichloroaniline in Soils
土壤中3,4-二氯苯胺降解动力学及其生态毒性

Diuron is a widely used herbicide of the substitued urea,main metabolite of which is 3,4 dichloroaniline.The degradation kinetics and toxicity of 3,4 dichloroaniline and its further metabolite to environmental biological indicator( Folsomia candida) in different soils were studied in this paper.The experiment results showed that the degradation behavior of 3,4 dichloroaniline in soils could be described by first order kinetics very well.It is obvious that the toxicity of 3,4 dichloroaniline in soils is higher than mother compound(diuron)and doesn't depends only on the content of 3,4 dichloroaniline in soils.The toxicity is related also to physical chemical properties of the test soils.3,4 dichloroaniline in clay soil is more toxic to test organism( F.candida) than in sand soil.