Degradation of atrazine by microwave-assisted electrodeless discharge mercury lamp in aqueous solution

被引：80

作者：

Ta, Na ^{[1
]}

Hong, Jun ^{[1
]}

Liu, Tingfeng ^{[1
]}

Sun, Cheng ^{[1
]}

机构：

[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210093, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2006年 / 138卷 / 01期

关键词：

atrazine; microwave; electrodeless discharge mercury lamp; photodegradation; pesticide;

D O I：

10.1016/j.jhazmat.2006.05.050

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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.

引用

页码：187 / 194

页数：8

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