DEGRADATION OF NEAT AND COMMERCIAL SAMPLES OF ORGANOPHOSPHATE PESTICIDES IN ILLUMINATED TIO2 SUSPENSIONS

被引：16

作者：

MAK, MKS ^{[1
]}

HUNG, ST ^{[1
]}

机构：

[1] CITY POLYTECH HONG KONG, DEPT APPL SCI, KOWLOON, HONG KONG

来源：

TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY | 1992年 / 36卷 / 3-4期

关键词：

D O I：

10.1080/02772249209357838

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The organophosphates Malathion (diethyl mercaptosuccinate), Diazinon (O,O-diethyl O-(2-isopropyl-6-methyl-4-pyrimidinyl) phosphorothioate), and DDVP (dimethyl-2,2-dichlorovinyl phosphate) and a commercial Malathion sample were found to decompose readily when illuminated in TiO2 suspensions. The photocatalytic process was facile in suspensions containing as little as 20 ppm anatase particles. Photolytic products of the heteroatomic compounds include: PO43-, SO24-, NH3 and NO3-, and Cl-. However, substantial delay in release of heteratoms as oxoanions was found compared to the rate of disappearance of the primary substrates. The success with the commercial Malathion sample is promising for the development of photocatalysis in the treatment of environmental problems.

引用

页码：155 / 168

页数：14

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