PHOTOSTABILIZATION OF QUINALPHOS BY CRYSTAL VIOLET ON THE SURFACE OF KAOLINITE AND PALYGORSKITE

被引：12

作者：

BANERJEE, K ^{[1
]}

DUREJA, P ^{[1
]}

机构：

[1] INDIAN AGR RES INST,DIV AGR CHEM,NEW DELHI 110012,INDIA

来源：

PESTICIDE SCIENCE | 1995年 / 43卷 / 04期

关键词：

PHOTOSTABILIZATION; CRYSTAL VIOLET; KAOLINITE; PALYGORSKITE;

D O I：

10.1002/ps.2780430413

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Photochemical stability of the insecticide, quinalphos (O,O-diethyl O-quinoxalin-2-yl phosphorothioate), adsorbed on kaolinite and palygorskite was studied. In all cases considerable photostabilization was achieved in comparison with the sample of pesticide in its free form. Improvement of photostabilization was achieved when a cationic dye (crystal violet) was co-adsorbed with the quinalphos. The interactions between quinalphos and clays were studied by Fourier-transform infra-red spectroscopy. It is suggested that photostabilization is due to steric hindrance imposed by the clay surface to the isomerization step of photochemical reaction and pacification of clay surface by crystal violet.

引用

页码：333 / 337

页数：5

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