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2011•Journal of the South China Agricultural UniversityRequires access

Determination of Diazinon Residues in Milk by Gas Chromatography

Ran Ao, Zeng ZhenLing, Yu JingXian, Shen XiangGuang

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Abstract

A gas chromatographic method was developed for the determination of diazinon residues in milk.Samples dissolved in acetone were extracted with n-hexane,cleaned with neutral alumina column,and determined by gas chromatography(flame photometric detector) after volume measurement with acetone.The recoveries of the determination were 73.4%-96.2%.The values of intra and inter-assay RSD were in the range of 3.5%-9.1% and 4.9%-7.5%,respectively.The linear correlation coefficient was 0.999 9.The detection limit was 2.0 μg·kg-1 and the limit of quantitation remained as 5.0 μg·kg-1.

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What this paper is about

A gas chromatographic method was developed for the determination of diazinon residues in milk.Samples dissolved in acetone were extracted with n-hexane,cleaned with neutral alumina column,and determined by gas chromatography(flame photometric detector) after volume measurement with acetone.The recoveries of the determination were 73.4%-96.2%.The values of intra and inter-assay RSD were in the range of 3.5%-9.1% and 4.9%-7.5%,respectively.The linear correlation coefficient was 0.999 9.The detection limit was 2.0 μg·kg-1 and the limit of quantitation remained as 5.0 μg·kg-1.

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Available abstract

A gas chromatographic method was developed for the determination of diazinon residues in milk.Samples dissolved in acetone were extracted with n-hexane,cleaned with neutral alumina column,and determined by gas chromatography(flame photometric detector) after volume measurement with acetone.The recoveries of the determination were 73.4%-96.2%.The values of intra and inter-assay RSD were in the range of 3.5%-9.1% and 4.9%-7.5%,respectively.The linear correlation coefficient was 0.999 9.The detection limit was 2.0 μg·kg-1 and the limit of quantitation remained as 5.0 μg·kg-1.

Key concepts: Chromatography, Diazinon, Detection limit, Gas chromatography, Acetone, Chemistry, Electron capture detector, Hexane

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