スキャンモードを用いるガスクロマトグラフィー/質量分析法による農産物中残留農薬の一斉分析

概要

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A simple and rapid screening analysis for multiple pesticide residues in agricultural products was developed. It is an especially effective mean for detection in analyzing food with much interference because the reliability confirmation of substances is greatly improved over the SIM method. A sample is extracted with acetone and reextracted with a non-polar solvent by salting out. We used 50% ethyl acetate/hexane as a non-polar solvent. The extract was cleaned up by GPC with ethyl acetate : cyclohexane (1 : 1) as eluent. We used Bio Beads S-X3 (200〜400 mesh) as a GPC gel. Measurements of GC/MS were performed in the scanning mode. We could confirm substances with mass spectra at high background levels, such as food, and perform with only one injection to the instrument without grouping pesticides, as in the case of the GC/MS-SIM method. Due to these merits, we could increase the reliability and decrease the time sonsumption. We could analyze as a screening analysis 102 kinds of pesticides. The detection limits in the samples were from 0.004 to 0.05 μg/g.
社団法人日本分析化学会の論文
1997-11-05