Determination of 42 Persistent Organic Pollutants in Geographical Original Soil of Bamboo Shoot by Gas Chromatography-Tandem Mass Spectrometry with Solid Phase Extraction
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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)
ZHANG Yan ping,CHEN Zhen chao,SUN Xiao wei,SHEN Dan yu,ZHONG Dong lian,MO Run hong,TANG Fu bin 1.中国林业科学研究院亚热带林业研究所;2.河南省林业科学研究院
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      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∶1,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 μg/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 μg/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.