Effects of Humic Materials on Behavior of Pesticides in Environment

为了研究腐植酸对土壤和水环境中农药迁移的影响，研究了腐植酸对农药的吸附作用。采用吸附胡敏酸和黄腐酸的DEAE法，比较了胡敏酸和黄腐酸对不同KE值农药的吸附效果。DEAE对腐植酸和黄腐酸的吸附能力无明显差异。测定了腐植酸对各种农药的吸附和解吸分配系数，考察了腐植酸对甲基苯丙胺生物降解性的影响。

In order to consider the effects of humic materials on transport of pesticide in soil and water environment, the adsorption of pesticide by humic materials was examined. By using the DEAE by which adsorbed humic acid or fulvic acid, the adsorption of some pesticides with different Kow by humic acids and fulvic acids were compared. These were no difference of adsorbed capability of DEAE adsorbed capability of DEAE adsorbed fraction on humic acid and on Fulvic acid. Partition coefficient of adsorption and of desorption of each pesticides from humic materials were obtained.The effect of humic acid on the biodegradation of MEP ware examined too.