期刊
JOURNAL OF ENVIRONMENTAL SCIENCES
卷 23, 期 5, 页码 773-777出版社
SCIENCE PRESS
DOI: 10.1016/S1001-0742(10)60476-7
关键词
humic acids; Cu(II); photodegradation; hydroxyl radical; singlet oxygen
资金
- National Basic Research Program (973) of China [2007CB407302]
- Ministry of Education of China [2010]
- Fundamental Research Funds for the Central Universities of China [DUT11ZD108]
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 (center dot OH) was a main active species. Humic acids restrained atrazine degradation, nevertheless, when introducing Cu(II), the photodegradation was accelerated, in which singlet oxygen (O-I(2)) replaced center dot 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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