SHANG GUAN Liang-min

( National Tea Quality Supervision and Inspection Center, Fujian, Anxi 362400, China )

Abstract: A qualitative and quantitative analytical method was developed for the determination of buprofezin, fosmet and pyridaben by solid phase extraction on gas chromatography-ion trap mass spectrometry in tea. The separation and quantitative analysis of 3 pesticides was performed by the gas chromatography-ion trap mass spectrometry. The results showed that recoveries of 3 pesticides ranged from 92.0% to 115.0%. The detection limits were in the range of 0.01~0.02 mg/kg. The method is simple, and is of high efficiency and sensitivity for the simultaneous determination of buprofezin, fosmet and pyridaben in tea sample.

Key words: gas chromatography-ion mass spectrometry; tea; buprofezin; fosmet; pyridaben

E-mail: shangguan789@163.com

Analysis and Testing Technology and Instruments, Vol. 17, No. 2, 2011, 123-125.