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  • Title: One-step extraction for gas chromatography with flame photometric detection of 18 organophosphorus pesticides in Chinese medicine health wines.
    Author: Liu Q, Kong W, Qiu F, Wei J, Yang S, Zheng Y, Yang M.
    Journal: J Chromatogr B Analyt Technol Biomed Life Sci; 2012 Feb 15; 885-886():90-6. PubMed ID: 22285000.
    Abstract:
    An easy, rapid and selective gas chromatography with flame photometric detection (GC-FPD) method was established for simultaneously determining 18 organophosphorus pesticides (OPPs) in 80 Chinese medicine (CM) health wines. This method was based on a simple one-step extraction procedure using a little solvent without any further cleanup steps. The optimized extraction solvent for the pesticides is acetone:dichloromethane (1:1, V/V) with extraction recovery of 79.0-109.1% and relative standard deviation (RSD) of 0.36-12.68%, respectively. The limits of detection (LODs) of the established GC-FPD method for all investigated pesticides ranged from 1 to 15ngmL(-1) and limits of quantification (LOQs) from 4 to 50ngmL(-1). Out of all 80 CM health wines, 18 OPPs were found in 8 samples at low concentrations of 8.2-37.9ngmL(-1). These pesticides were successfully confirmed by GC-MS. This is the first report of determining OPPs in CM health wines, providing references for monitoring the quality of CM health wine in routine analysis.
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