Study on the extraction of organophosphorus insecticides from soil by supercritical fluid method

被引：3

作者：

Huang, YT ^{[1
]}

Yen, JH ^{[1
]}

Wang, YS ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Agr Chem, Taipei 10764, Taiwan

来源：

ANALYTICAL SCIENCES | 1997年 / 13卷

关键词：

organophosphorus insecticide; SFE; soil;

D O I：

10.2116/analsci.13.Supplement_137

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Recovery of organophosphorus insecticides, quinalphos, chlorpyrifos and methidathion from soil were examined by extracting with carbon dioxide under supercritical state. Extraction conditions were designed at 100, 150, 200, 250 and 300 atm and under 40, 50 or 60 degrees C. The better recovery was obtained by amending 2 mi of methanol into soil sample before extraction. The best extraction condition was found to be at 300 atm and under 50 degrees C, at 200 atm and under 60 degrees C, and at 100 atm and under 60 degrees C for quinalphos, chlorpyrifos and methidathion, respectively.

引用

页码：137 / 140

页数：4