Determination of organophosphorus pesticides in water using SPME-GC-MS.

被引：11

作者：

Silva, FC ^{[1
]}

Cardeal, ZD

de Carvalho, CR

机构：

[1] Univ Fed Minas Gerais, Dept Quim, BR-31270901 Belo Horizonte, MG, Brazil

[2] Fundacao Ctr Tecnol Minas Gerais, Lab Analise Ambiental, BR-31170000 Belo Horizonte, MG, Brazil

[3] Univ Fed Maranhao, CT, Dept Quim, BR-65080040 Sao Luis, MA, Brazil

来源：

QUIMICA NOVA | 1999年 / 22卷 / 02期

关键词：

organophosphorus pesticides; solid phase microextraction; GC-MS;

D O I：

10.1590/S0100-40421999000200010

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solid-phase microextraction (SPME) has been applied to direct extraction of 11 organophosphorus pesticides in water using a 100 mu m fiber polydimethylsiloxane. The method was evaluated with respect time of exposure, detection limits (LODs), linearity and precision. The detection limits (S/N = 3) depend of each pesticide and varie about ng/L levels. The linearity was satisfactory with coefficients of correlation usually greater than 0.993. The precision of the method was determined by extraction from 4.0 mu g/L aqueous standard with coefficients of variation between 5.7 to 17.2%.

引用

页码：197 / 200

页数：4

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