Determination of Vegetables Methamidophos by Matrix Solid-phase Disperse and Gas Chromatography

Abstract

Abstract: A new method based on matrix solid-phase dispersion (MSPD) extraction with florisil-graphitized carbon black has been developed to determine methamidophos in various vegetables. The methamidophos was assayed by gas chromatography with nitrogen-phosphorus detector. Optimization of different parameters such as the type of solid supports for matrix dispersion, the ratio of sample, sorbent, different eluents and dosage was carried out. The results showed that the recovery range is 85.7%～109.2% with relative standard deviation lower than 8%. It proved that MSPD is a valid method to analyze methamidophos for most vegetables.

Key words: matrix solid-phase dispersion(MSPD), vegetables, methamidophos, gas chromatography, recovery

ZHANG Qian, WANG Ming-Lin, DU Hai-Yun, BEI Feng. Determination of Vegetables Methamidophos by Matrix Solid-phase Disperse and Gas Chromatography[J]. FOOD SCIENCE, 2007, 28(6): 265-268.

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Determination of Vegetables Methamidophos by Matrix Solid-phase Disperse and Gas Chromatography

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