DETERMINATION OF TOXAPHENE IN SOIL BY ELECTRON-CAPTURE NEGATIVE-ION MASS-SPECTROMETRY AFTER FRACTIONATION BY HIGH-PERFORMANCE GEL-PERMEATION CHROMATOGRAPHY

被引：12

作者：

BRUMLEY, WC ^{[1
]}

BROWNRIGG, CM ^{[1
]}

GRANGE, AH ^{[1
]}

机构：

[1] LOCKHEED ENGN & SCI CO,ENVIRONM PROGRAM OFF,LAS VEGAS,NV 89119

来源：

JOURNAL OF CHROMATOGRAPHY | 1993年 / 633卷 / 1-2期

关键词：

D O I：

10.1016/0021-9673(93)83152-I

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Toxaphene is extracted from soil by standard procedures using Soxhlet or sonication methods. The extract is fractionated by high-performance gel permeation chromatography (HPGPC), which separates toxaphene from the bulk of co-extractives including polychlorinated biphenyls. This HPGPC fractionation has broad application to many problems of environmental analysis. A solid-phase extraction cleanup with silica gel further removes any polar components present in the collected fraction. Determination of toxaphene is accomplished by electron-capture negative ion mass spectrometry (ECNI-MS) after introduction by capillary gas chromatography. Levels down to 100 mug/kg in soil are obtainable. Brief mention is made of high-resolution ECNI-MS carried out at a resolution of 10 000.

引用

页码：177 / 183

页数：7

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