Degradation of Organophosphorus Pesticides in Water during UV/H2O2 Treatment: Role of Sulphate and Bicarbonate Ions

被引：24

作者：

Fadaei, Am ^{[1
]}

Dehghani, Mh ^{[1
]}

Mahvi, Ah ^{[1
]}

Nasseri, S. ^{[1
]}

Rastkari, N. ^{[2
]}

Shayeghi, M. ^{[3
]}

机构：

[1] Univ Tehran Med Sci, Sch Publ Hlth, Dept Environm Hlth Engn, Tehran, Iran

[2] Univ Tehran Med Sci, Inst Environm Res, Tehran, Iran

[3] Univ Tehran Med Sci, Sch Publ Hlth, Dept Med Entomol & Vector Control, Tehran, Iran

来源：

E-JOURNAL OF CHEMISTRY | 2012年 / 9卷 / 04期

关键词：

Advanced oxidation process; Bicarbonate; Hydrogen peroxide; Sulphate; Ultraviolet light; HYDROXYL; UV;

D O I：

10.1155/2012/958750

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The photodegradation of two organophosphorus pesticides, malathian and diazinon, by sulfate radicals and bicarbonate radicals in aqueous solution were studied. The effect of the operational parameters such as pH, salt concentration, water type, H2O2 concentration and initial concentration of pesticides was studied. Gas chromatography mass spectroscopy (GC-MS) was used for analyses of pesticides. When salt effect was studied, it was found that sodium bicarbonate was the most powerful inhibitor used, while sodium sulfate was the weakest one. The highest degradation in UV/H2O2 process for malathion was found in alkaline condition and for diazinon in acidic condition. The photodegradation in all waters used in this work exhibited first order kinetics. Photodegradation rate in distilled water was higher than real water. The degradation of pesticides increased with increasing of H2O2 concentration.

引用

页码：2015 / 2022

页数：8

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