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发布时间：2019-03-09

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：CSCD、ISTIC、PubMed、EI、SCIE

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.