ガスクロマトグラフ/質量分析計による食品中のジチオカルバメートおよびミルネブの残留分析

中村 宗知; 野田 聡子; 小杉 正樹; 石塚 訓子; 水越 一史; 谷口 誠; 根本 了

doi:10.3358/shokueishi.51.213

Originals

Determination of Dithiocarbamates and Milneb Residues in Foods by Gas Chromatography-Mass Spectrometry

Munetomo NAKAMURA, Satoko NODA, Masaki KOSUGI, Noriko ISHIDUKA, Kazushi MIZUKOSHI, Makoto TANIGUCHI, Satoru NEMOTO

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Keywords: dithiocarbamate, milneb, methylation, GC-MS, agricultural products, animal and fishery products

JOURNAL FREE ACCESS

2010 Volume 51 Issue 5 Pages 213-219

DOI https://doi.org/10.3358/shokueishi.51.213

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Abstract

A highly sensitive gas chromatographic-mass spectrometric (GC-MS) method was developed for dithiocarbamates (DTCs) and milneb in foods. DTCs and milneb were extracted from foods with cysteine-EDTA solution as sodium salts, and methylated with methyl iodide. Methyl derivatives of DTCs and milneb were cleaned up on a neutral alumina mini column and determined by GC-MS. The mean recoveries of DTCs and milneb were in the range of 72-120%, except for methiram. The quantification limits were 0.01 mg/kg (as CS₂) in foods except tea (0.1 mg/kg as CS₂). The developed method was applied to 10 compounds (4 dimethyldithiocarbamates, 3 ethylenebisdithiocarbamates, polycarbamates, propineb and milneb).

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