Biomaterial Database

Pesticide multiresidue analysis of peanuts using automated gel permeation chromatography clean-up/gas chromatography-mass spectrometry. 2009

J-H Wang, and F Cai, and Y-L Wang, and X-L Wang

Ocean University of China, Shandong, China. whywrs@yahoo.com.cn

A method based on automated gel permeation chromatography (GPC) and on-line quantitative concentration was developed for the determination of residues of 38 typically used pesticides in high-oil peanuts. Pesticides were extracted using acetonitrile into an oil fraction containing little of the peanut matrix. After changing the solvent to the mobile phase (1 : 1 cyclohexane : ethyl acetate), clean-up was carried out using GPC, the final collected solution being automatically concentrated to a fixed volume and transferred into vials for gas chromatography (GC) injection. The pesticides were analysed by gas chromatography-mass spectrometry (GC/MS) in the selected ion monitoring (SIM) mode. Average recoveries (spiked levels of 0.02, 0.05, and 0.1 microg g(-1)) were between 70 and 117%. The relative standard deviation of the method was 3.5-21% (n = 6). This approach gave comparable results with a previously published method.

UI	MeSH Term	Description	Entries
D010367	Arachis	A plant genus of the family FABACEAE that includes peanuts.	Arachis hypogaea,Peanuts,Peanut
D010573	Pesticide Residues	Pesticides or their breakdown products remaining in the environment following their normal use or accidental contamination.	Pesticide Residue,Residue, Pesticide,Residues, Pesticide
D012015	Reference Standards	A basis of value established for the measure of quantity, weight, extent or quality, e.g. weight standards, standard solutions, methods, techniques, and procedures used in diagnosis and therapy.	Standard Preparations,Standards, Reference,Preparations, Standard,Standardization,Standards,Preparation, Standard,Reference Standard,Standard Preparation,Standard, Reference
D002681	China	A country spanning from central Asia to the Pacific Ocean.	Inner Mongolia,Manchuria,People's Republic of China,Sinkiang,Mainland China
D002850	Chromatography, Gel	Chromatography on non-ionic gels without regard to the mechanism of solute discrimination.	Chromatography, Exclusion,Chromatography, Gel Permeation,Chromatography, Molecular Sieve,Gel Filtration,Gel Filtration Chromatography,Chromatography, Size Exclusion,Exclusion Chromatography,Gel Chromatography,Gel Permeation Chromatography,Molecular Sieve Chromatography,Chromatography, Gel Filtration,Exclusion Chromatography, Size,Filtration Chromatography, Gel,Filtration, Gel,Sieve Chromatography, Molecular,Size Exclusion Chromatography
D005506	Food Contamination	The presence in food of harmful, unpalatable, or otherwise objectionable foreign substances, e.g. chemicals, microorganisms or diluents, before, during, or after processing or storage.	Food Adulteration,Adulteration, Food,Adulterations, Food,Contamination, Food,Contaminations, Food,Food Adulterations,Food Contaminations