Determination of 42 Persistent Organic Pollutants in Geographical Original Soil of Bamboo Shoot by Gas Chromatography-Tandem Mass Spectrometry with Solid Phase Extraction

KeyWord:polyaromatic hydrocarbons£¨PAHs£©  polychlorinated biphenyls£¨PCBs£©  organochlorine pesticides£¨OCPs£©  original soil of bamboo shoot  solid phase extraction  gas chromatography-tandem mass spectrometry£¨GC-MS/MS£©

Abstract:

      A method of gas chromatography-tandem mass spectrometry£¨GC-MS/MS£© was developed for the determination of 8 polyaromatic hydrocarbons£¨PAHs£©,18 polychlorinated biphenyls£¨PCBs£© and 16 organochlorine pesticides£¨OCPs£© in geographical original soil of bamboo shoot.The samples were extracted with acetone-hexane£¨1¡Ã1,by volume£© in an superpower ultrasonic bath,then purified with a Florisil composite column.The eluant was concentrated by N2 blowing,finally detemined by GC-MS/MS.42 persistent organic pollutants£¨POPs£© were efficiently separated within 35 min,and there were good linearities for the analytes in the concentration range of 2.0-2 000.0 ¦Ìg/L with their correlation coefficients£¨r2£© of 0.995 2-0.999 8.The spiked recoveries ranged from 62.3% to 128% with relative standard deviations of 0.5%-15.8%,and the limits of detection£¨S/N=3£© were 0.070-6.902 ¦Ìg/kg.With the characteristics of easy operation,high sensitivity and accuracy,the method could be applied in the simultaneous detection of 42 POPs in original soil of bamboo shoot.