Effects of Cu(II) and humic acid on atrazine photodegradation
Xia Sun , Hui Liu , Yaobin Zhang , Yazhi Zhao , Xie Quan
DOI:
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.
