Aquatic environment

Effects of Cu(II) and humic acid on atrazine photodegradation

Xia Sun , Hui Liu , Yaobin Zhang , Yazhi Zhao , Xie Quan


Received June 03, 2010,Revised September 10, 2010, Accepted , Available online

Volume 23,2011,Pages 773-777

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This work was designed to explore the characteristics of photodegradation of herbicides in the copper-polluted water body. The results showed that Cu(II) alone could induce a photo Fenton-like reaction to enhance the degradation of atrazine, in which hydroxyl radical ( OH) was a main active species. Humic acids restrained atrazine degradation, nevertheless, when introducing Cu(II), the photodegradation was accelerated, in which singlet oxygen (1O2) replaced OH acting as the prevailing species. A feasible mechanism for the photochemical process was also proposed, which is helpful for better understanding the environmental photochemistry of atrazine in the copper-polluted water.

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