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GC-MS Determination of Pyrethroid Pesticides in Aquatic Products with Gel Permeation Chromatography

Jiwei Zhao

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Abstract

A method for determination of pyrethroid pesticides in aquatic products by GC-MS was proposed.The sample was extracted with a mixed solvent of cyclohexane and ethyl acetate(1+1),and the extract obtained was purified by gel permeation chromatography(GPC) to eliminate the interference of matrix.Eluate from the GPC column was taken up with 1.0 mL of mixture of cyclohexane-ethyl acetate(1+1),which was used for GC-MS determination.Using sample of carp as matrix,recovery and precision were tested by the standard addition method,giving values of recovery in the range of 75.2%-120% and values of RSD′s(n=6) in the range of 1.11%-13.7% respectively.

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What this paper is about

A method for determination of pyrethroid pesticides in aquatic products by GC-MS was proposed.The sample was extracted with a mixed solvent of cyclohexane and ethyl acetate(1+1),and the extract obtained was purified by gel permeation chromatography(GPC) to eliminate the interference of matrix.Eluate from the GPC column was taken up with 1.0 mL of mixture of cyclohexane-ethyl acetate(1+1),which was used for GC-MS determination.Using sample of carp as matrix,recovery and precision were tested by the standard addition method,giving values of recovery in the range of 75.2%-120% and values of RSD′s(n=6) in the range of 1.11%-13.7% respectively.

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Available abstract

A method for determination of pyrethroid pesticides in aquatic products by GC-MS was proposed.The sample was extracted with a mixed solvent of cyclohexane and ethyl acetate(1+1),and the extract obtained was purified by gel permeation chromatography(GPC) to eliminate the interference of matrix.Eluate from the GPC column was taken up with 1.0 mL of mixture of cyclohexane-ethyl acetate(1+1),which was used for GC-MS determination.Using sample of carp as matrix,recovery and precision were tested by the standard addition method,giving values of recovery in the range of 75.2%-120% and values of RSD′s(n=6) in the range of 1.11%-13.7% respectively.

Key concepts: Chromatography, Ethyl acetate, Gel permeation chromatography, Chemistry, Cyclohexane, Pyrethroid, Elution, Matrix (chemical analysis)

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