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Indexed by:期刊论文

Date of Publication:2011-07-01

Journal:JOURNAL OF ENVIRONMENTAL SCIENCES

Included Journals:SCIE、EI、PubMed、ISTIC、CSCD

Volume:23

Issue:5

Page Number:773-777

ISSN No.:1001-0742

Key Words:humic acids; Cu(II); photodegradation; hydroxyl radical; singlet oxygen

Abstract: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.