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2004•Journal of Nanchang UniversityRequires access

DETERMINATION OF RESIDUAL ORGANOCHLORINE PESTICIDES IN TRADITIONAL CHINESE MEDICINES BY CAPILLARY GAS CHROMATOGRAPHY

Yiqun Wan, Aiping Yan

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Abstract

A GC-ECD method for the determination of the residual organochlorine pesticides in two kinds of chinese medicines of Jiangxi Province was described using DB-1701 column. The residues were extracted from sample with acetone by saturating the extraction solvent with NaCl and simultaneously Liquid-Liquid partitioning by hexane. The extracts were cleaned up by concentrated H_2SO_4. The detection limits were 1.0×10~(-3)-5.0×10~(-3) mg/kg. Recoveries of organochlorine pesticides were 85.7%-115.2%. The method was applied to the determination of organochlorine pesticides in actual samples with satisfactory results.

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What this paper is about

A GC-ECD method for the determination of the residual organochlorine pesticides in two kinds of chinese medicines of Jiangxi Province was described using DB-1701 column. The residues were extracted from sample with acetone by saturating the extraction solvent with NaCl and simultaneously Liquid-Liquid partitioning by hexane. The extracts were cleaned up by concentrated H_2SO_4. The detection limits were 1.0×10~(-3)-5.0×10~(-3) mg/kg. Recoveries of organochlorine pesticides were 85.7%-115.2%. The method was applied to the determination of organochlorine pesticides in actual samples with satisfactory results.

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Available abstract

A GC-ECD method for the determination of the residual organochlorine pesticides in two kinds of chinese medicines of Jiangxi Province was described using DB-1701 column. The residues were extracted from sample with acetone by saturating the extraction solvent with NaCl and simultaneously Liquid-Liquid partitioning by hexane. The extracts were cleaned up by concentrated H_2SO_4. The detection limits were 1.0×10~(-3)-5.0×10~(-3) mg/kg. Recoveries of organochlorine pesticides were 85.7%-115.2%. The method was applied to the determination of organochlorine pesticides in actual samples with satisfactory results.

Key concepts: Organochlorine pesticide, Chromatography, Pesticide, Chemistry, Acetone, Gas chromatography, Capillary gas chromatography, Residual

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