Oxidation of two organophosphorous insecticides by the photo-assisted Fenton reaction

被引：140

作者：

Evgenidou, E. ^{[1
]}

Konstantinou, I.

Fytianos, K.

Poulios, I.

机构：

[1] Aristotle Univ Thessaloniki, Environm Pollut Control Lab, Dept Chem, Thessaloniki 54124, Greece

[2] Univ Ioannina, Dept Environm & Nat Resources Management, Agrinion 30100, Greece

[3] Aristotle Univ Thessaloniki, Phys Chem Lab, Dept Chem, Thessaloniki 54124, Greece

来源：

WATER RESEARCH | 2007年 / 41卷 / 09期

关键词：

photo-fenton; dimethoate; parathion; toxicity; degradation products;

D O I：

10.1016/j.watres.2007.01.027

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 [工学]; 0830 [环境科学与工程];

摘要：

The photocatalytic degradation of two selected insecticides (dimethoate and methyl parathion) has been studied using the photo-assisted Fenton reaction. The degradation kinetics were studied under different conditions such as iron's and oxidant's concentration, temperature and inorganic ions. The degradation rates proved to be strongly influenced by these parameters. The replacement of hydrogen peroxide with peroxydisulfate was also tested in a photo-Fenton-like reaction. This system achieved high degradation rates of the selected compounds. Intermediate products formed during photocatalytic treatment were identified by means of solid-phase extraction (SPE) coupled to gas chromatography-mass spectroscopy techniques (GC-MS). Eight possible by-products were identified for parathion methyl and three for dimethoate formed through mainly oxidation and dealkylation reactions. Mineralization studies showed also that the photo-Fenton and the photo-Fenton-like systems are able to achieve mineralization of the insecticides. However, complete detoxification is achieved only in the presence of the photo-Fenton reagent. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2015 / 2027

页数：13

共 40 条

[1]

Monitoring and toxicity of sulfonated derivatives of benzene and naphthalene in municipal sewage treatment plants [J].