Hydrolysis kinetics of atrazine and

Hydrolysis kinetics of atrazine and influence factors

The hydrolysis kinetics of atrazine in distilled water and leaching water from soil, and their influence factors were studied by incubation at 35℃ and HPLC analysis method in this paper. The kinetic process of atrazine hydrolysis can be described by the first-order reaction law. The results showed that the hydrolysis rate constants k in leaching water and distilled water were 1.606x10-3/d and 1.055x10-3/d, respectively; the half-life of atrazine hydrolysis in distilled water at pH 3, pH 4.5 and pH 8 were 373 days, 522 days and 657 days respectively. The results also showed that the proton in reaction solution can catalyze the atrazine hydrolysis; humic acid and NH4+ etc. substances in aqueous solution can facilitate atrazine hydrolysis; rate constants of atrazine hydrolysis with humic acid and NH4NO3 were 2.431x10-3/d and 1.498x10-3/d respectively which were 2.3 and 1.42 times of control(1.055x10-3/d); anion NO3- can inhibit catalysis of humic acid to atrazine hydrolysis.

作 者： Lei Zhi-fang YE Chang-ming WANG Xing-jun   作者單位： Research Center for Eco-Environmental Sciences, chinese academy of Sciences,  刊 名： 環境科學學報(英文版)  ISTIC SCI 英文刊名： JOURNAL ENVIRONMENTAL SCIENCES  年，卷(期)： 2001 13(1)  分類號： X592  關鍵詞：  

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