期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 138, 期 1, 页码 187-194出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2006.05.050
关键词
atrazine; microwave; electrodeless discharge mercury lamp; photodegradation; pesticide
The present study investigates the degradation of atrazine (2-chloro-4-(ethyl amino)-6-isopropyl amino-s-triazine) in aqueous solution by a developed new method, namely by means of a microwave-assisted electrodeless discharge mercury lamp (MW-EDML). An experimental design was conducted to assess the influence of various parameters: pH value, initial concentration, amount of EDML, initial volume and coexisted solvent. Atrazine was degraded completely by EDML in a relatively short time (i.e. t(1/2) = 1.2 min for 10 mg/l). Additionally, the identification of main degradation products during atrazine degradation process was conducted by gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS). This study proposes the degradation mechanism including four possible pathways for atrazine degradation according to the degradation products. (c) 2006 Elsevier B.V. All rights reserved.
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