张耀斌
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论文类型:期刊论文
发表时间:2011-07-01
发表刊物:JOURNAL OF ENVIRONMENTAL SCIENCES
收录刊物:SCIE、EI、PubMed、ISTIC、CSCD
卷号:23
期号:5
页面范围:773-777
ISSN号:1001-0742
关键字:humic acids; Cu(II); photodegradation; hydroxyl radical; singlet oxygen
摘要: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.