Determination of pyrethroid pesticide residues in white wine by disperse liquid-liquid microextraction coupled to high performance liquid chromatography
A simple and efficient method using disperse liquid-liquid microextraction coupled to high performance liquid chromatography has been developed for the determination of pyrethroid pesticides (Cyfluthrin, Cypermethrin, Fenvalerateand and Bifenthrin) in White Wine. The wine sample which was contained in the tapered tube was extracted by dichloromethane, and the ethanol was dispersant. The four pesticides were separated by a Diamonsil C18 column in the wavelength at 210nm. The mobile phase was methanol, acetonitrile, and water (10∶75∶15), and flow rate was 1.0mL/min. A linear relationship was obtained for each analyte in the range of 0.05 and 50μg/mL with a correlation coefficiency(R)≥0.9993. The average recovery of the components ranged from 83.20% to 102.71%. The relative standard deviations(RSDs) were1.47%~3.24% and the determination limit was 1.00μg/L~2.00μg/L.
ZHOU Jianke;TANG Cuiling;HAN Chaojia;LI Xiangmei.
Determination of pyrethroid pesticide residues in white wine by disperse liquid-liquid microextraction coupled to high performance liquid chromatography[J]. China Brewing, 2012, 31(7): 164-166