Multiresidue determination of pesticides in agricultural products by gas chromatography/mass spectrometry with large volume injection.
Multiresidue determination of pesticides in agricultural products by gas chromatography/mass spectrometry with large volume injection.
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大体积进样气相色谱/质谱法测定农产品中多种农药残留
DOI：
10.1093/jaoac/87.6.1356
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发表时间：
2004
影响因子：
1.6
通讯作者：
A. Yamamoto
中科院分区：
文献类型：
--
作者：
Yukio Saito;S. Kodama;A. Matsunaga;A. Yamamoto
介绍了一种快速测定农产品中农药残留的方法。用乙腈萃取农药。为了去除色素和脂肪酸，萃取物的等分物被一个装有石墨化炭黑和伯仲胺的小柱净化。分析采用气相色谱/质谱法，采用基于可编程温度汽化器的大体积进样，使用填充苯基甲基硅胶化学键合二氧化硅的内衬。在番茄、菠菜、日本梨、葡萄和糙米中以不同浓度（0.02 ~ 0.4 μ g/g）对114种农药进行了试验。该方法对108种农药的回收率高达60%，清除效率高，清除时间短，可用于快速筛选分析。
A method is described for the rapid determination of pesticide residues in agricultural products. Pesticides were extracted from samples with acetonitrile. To remove pigments and fatty acids, an aliquot of the extract was cleaned up by a minicolumn that was packed both with graphitized carbon black and primary secondary amine. Analysis was performed by gas chromatography/ mass spectrometry with programmable temperature vaporizer-based large volume injection using a liner packed with phenylmethylsilicone chemically bonded silica. The method was evaluated for 114 pesticides by spiking into tomato, spinach, Japanese pear, grape, and brown rice at various concentrations of each pesticide (0.02-0.4 microg/g). The method, which gave good recovery (>60%) for 108 pesticides, is characterized by high cleanup efficiency and short cleanup time, and is useful as a rapid screening analysis.