Photochemical degradation of ciprofloxacin in UV and UV/H2O2 process: kinetics, parameters, and products

被引：170

作者：

Guo, Hong-Guang ^{[1
]}

Gao, Nai-Yun ^{[1
]}

Chu, Wen-Hai ^{[1
]}

Li, Lei ^{[1
]}

Zhang, Yong-Ji ^{[1
]}

Gu, Jin-Shan ^{[2
]}

Gu, Yu-Liang ^{[2
]}

机构：

[1] Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resources Reuse, Shanghai 200092, Peoples R China

[2] Natl Engn Res Ctr Urban Water Resource, Shanghai 200082, Peoples R China

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2013年 / 20卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Ciprofloxacin; Photochemical; Photolytic; Kinetics; Mechanism; Products; FLUOROQUINOLONE ANTIBACTERIAL AGENTS; WASTE-WATER TREATMENT; HYDROXYL RADICALS; ANTIBIOTICS; OXIDATION; PHOTODEGRADATION; PHOTOLYSIS; PEROXIDE; HORMESIS; NITRATE;

D O I：

10.1007/s11356-012-1229-x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Photochemical degradation of fluoroquinolone ciprofloxacin (CIP) in water by UV and UV/H2O2 were investigated. The degradation rate of CIP was affected by pH, H2O2 dosage, as well as the presence of other inorganic components. The optimized pH value and H2O2 concentration were 7.0 and 5 mM. Carbonate and nitrate both impeded CIP degradation. According to liquid chromatography-tandem mass spectrometry analysis, four and 16 products were identified in UV and UV/H2O2 system, respectively. Proposed degradation pathways suggest that reactions including the piperazinyl substituent, quinolone moiety, and cyclopropyl group lead to the photochemical degradation of CIP. Toxicity of products assessed by Vibrio qinghaiensis demonstrated that UV/H2O2 process was more capable on controlling the toxicity of intermediates in CIP degradation than UV process.

引用

页码：3202 / 3213

页数：12

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