USE OF A SOLID-PHASE EXTRACTION METHOD FOR THE ANALYSIS OF PESTICIDES IN GROUNDWATER BY GAS-CHROMATOGRAPHY WITH ELECTRON-CAPTURE AND FLAME PHOTOMETRIC DETECTORS

被引：23

作者：

DELACOLINA, C ^{[1
]}

SANCHEZRASERO, F ^{[1
]}

CANCELA, GD ^{[1
]}

TABOADA, ER ^{[1
]}

PENA, A ^{[1
]}

机构：

[1] CSIC,ESTAC EXPTL ZAIDIN,E-18008 GRANADA,SPAIN

来源：

ANALYST | 1995年 / 120卷 / 06期

关键词：

PESTICIDE RESIDUE ANALYSIS; GROUNDWATER; SOLID PHASE EXTRACTION; GAS CHROMATOGRAPHY; STATISTICAL ANALYSIS OF LINEAR REGRESSION;

D O I：

10.1039/an9952001723

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Organophosphorous, organochlorine and electron-capture sensitive pesticides were extracted from water in a single step using a Cls solid phase extraction cartridge, eluted with ethyl acetate and isooctane and determined by GC with electron-capture and flame photometric detection. Analytical aspects of the method were studied with a linear regression model, including the linearity of the responses, repeatability and detection limits, which ranged from 3 to 35 mu g l(-1). The method of concentration employed did not contribute to a noticeable loss of the chemicals, with recoveries of over 90%, except for fenthion. The present method is applied to the analysis of 27 pesticides in groundwater, most of which are recovered at >70% efficiency which complies with the EPA criteria.

引用

页码：1723 / 1728

页数：6