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2012•Chinese Journal of Health Laboratory TechnologyRequires access

Determination of 25 kinds of pesticides residuces in fruits and vegetables by ASPE/GC-MS

Jian Ding

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Abstract

Objective:To establish a method for the determination of 25 kinds of organophosphorus pesticides residuces in fruits and vegetables by ASPE/GC-MS.Methods:The samples were extracted with acetonitrile solution,then the extract was purified through ASPE.The collected solution was analyzed by GC–MS.Results:25 kinds of organophosphorus pesticides gave good linearities in the range of 0.05 mg/kg~5.0 mg/kg(r0.99).The minimum detection limint was 0.004 mg/kg.The recovery rate and RSD were 80.2%~98.7% and 1.1%~4.8% at 0.5 mg/kg respectively,and 74.2%~99.8% and 1.5%~6.8% at 1.0 mg/kg respectively.Conclusion:The method is simple,rapid with effective purification and high recovery.It is suitable for the determination of multiple organophosphorus pesticides residuces in fruits and vegetables.

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What this paper is about

Objective:To establish a method for the determination of 25 kinds of organophosphorus pesticides residuces in fruits and vegetables by ASPE/GC-MS.Methods:The samples were extracted with acetonitrile solution,then the extract was purified through ASPE.The collected solution was analyzed by GC–MS.Results:25 kinds of organophosphorus pesticides gave good linearities in the range of 0.05 mg/kg~5.0 mg/kg(r0.99).The minimum detection limint was 0.004 mg/kg.The recovery rate and RSD were 80.2%~98.7% and 1.1%~4.8% at 0.5 mg/kg respectively,and 74.2%~99.8% and 1.5%~6.8% at 1.0 mg/kg respectively.Conclusion:The method is simple,rapid with effective purification and high recovery.It is suitable for the determination of multiple organophosphorus pesticides residuces in fruits and vegetables.

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Available abstract

Objective:To establish a method for the determination of 25 kinds of organophosphorus pesticides residuces in fruits and vegetables by ASPE/GC-MS.Methods:The samples were extracted with acetonitrile solution,then the extract was purified through ASPE.The collected solution was analyzed by GC–MS.Results:25 kinds of organophosphorus pesticides gave good linearities in the range of 0.05 mg/kg~5.0 mg/kg(r0.99).The minimum detection limint was 0.004 mg/kg.The recovery rate and RSD were 80.2%~98.7% and 1.1%~4.8% at 0.5 mg/kg respectively,and 74.2%~99.8% and 1.5%~6.8% at 1.0 mg/kg respectively.Conclusion:The method is simple,rapid with effective purification and high recovery.It is suitable for the determination of multiple organophosphorus pesticides residuces in fruits and vegetables.

Key concepts: Chemistry, Pesticide, Recovery rate, Chromatography, Gas chromatography–mass spectrometry, Mass spectrometry, Biology, Agronomy

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