Validation of an Analytical Method for Organochlorine Pesticide Residues in Beef Products by GC-MS Using Sampling with Increment Reduction

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  • Okada Tomoyuki
    Gunma Prefectural Food Safety Research Center
  • Koike Yuriko
    Gunma Prefectural Food Safety Research Center Gunma Prefectural Institute of Public Health and Environmental Sciences
  • Shoji Tadashi
    Gunma Prefectural Food Safety Research Center
  • Sutou Kazuhisa
    Gunma Prefectural Food Safety Research Center

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  • インクリメント縮分法により調製した試料を用いたGC-MSによる牛肉の有機塩素系農薬分析法の妥当性評価
  • インクリメントシュクブンホウ ニ ヨリ チョウセイ シタ シリョウ オ モチイタ GC-MS ニ ヨル ギュウニク ノ ユウキ エンソケイ ノウヤク ブンセキホウ ノ ダトウセイ ヒョウカ

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<p>We developed a simultaneous determination method for the environmentally persistent organochlorine pesticides aldrin/dieldrin, γ-BHC, DDT, endrin, and heptachlor in beef products. In the method, we adopted incremental reduction for sample collection in order to improve the uniformity of the samples. In incremental reduction, a sample was ground and spread to an even thickness, divided into sections, and collected in an equal amount from each section. After extraction with an acetonitrile/ethanol mixture (1 : 1 v/v), sample clean-up was performed by refrigerated centrifu­gation and solid-phase extraction. This process was easy and did not require gel permeation chromatography. The sample was analyzed by GC-MS. A validation study of the development method showed that the tested pesticides met the target values indicated in the validity evaluation guideline.</p>

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