A New Gas Chromatography/Mass Spectrometry (GC-MS) Method for the Multiresidue Analysis of Pesticides in Bread

被引：7

作者：

Kolberg, Diana I. ^{[1
]}

Prestes, Osmar D. ^{[1
]}

Adaime, Martha B. ^{[1
]}

Zanella, Renato ^{[1
]}

机构：

[1] Univ Fed Santa Maria, Dept Quim, BR-97105900 Santa Maria, RS, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2010年 / 21卷 / 06期

关键词：

pesticides; multiresidue; bread; GC-MS; TANDEM MASS-SPECTROMETRY; SOLID-PHASE EXTRACTION; LIQUID-CHROMATOGRAPHY; RESIDUES; VALIDATION; VEGETABLES; FOOD; QUECHERS; CEREALS; SAMPLES;

D O I：

10.1590/S0103-50532010000600016

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work a method for the determination of 15 pesticides in bread samples using gas chromatography coupled with mass spectrometry (GC-MS), operating in the negative chemical ionization mode (NCI) was developed and validated. For the extraction procedure acetonitrile containing 1% (v/v) acetic acid was used in presence of sodium acetate, sodium citrate and magnesium sulphate. The method was validated evaluating the following parameters: linearity, limit of detection (LOD), limit of quantification (LOQ), precision and accuracy. The linear range used was from 1.0 to 100 mu g L(-1). The recoveries had been considered satisfactory presenting values between 70 and 117% with RSD <= 17.6% for almost all the compounds. The real method LOQ ranged from 10 to 20 mu g kg(-1). The method shown to be adequate for the multiresidue analysis of pesticides in bread and the GC-MS (NCI) proved to be sensitive and highly selective.

引用

页码：1065 / 1070

页数：6

共 23 条

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