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固相萃取/气相色谱-串联质谱法测定竹笋产地土壤中42种持久性有机污染物
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作者单位
张延平,陈振超,孙晓薇,沈丹玉,钟冬莲,莫润宏,汤富彬 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 
基金项目:浙江省科技厅公益技术应用研究项目(2017C32062);中国林科院基本科研业务费专项资金(CAFYBB2017SZ002)
中文摘要:建立了同时测定竹笋产地土壤中8种多环芳烃(PAHs)、18种多氯联苯(PCBs)和16种有机氯农药(OCPs)的方法。样品经丙酮-正己烷(1∶1,体积比)大功率超声提取,复合弗罗里硅土柱固相萃取净化、氮吹浓缩后,利用气相色谱-三重四极杆质谱(GC-MS/MS)测定。结果表明,42种持久性有机污染物(POPs)在35 min内得到分离,在2.0~2 000.0 μg/L范围内线性关系良好,相关系数(r2)为0.995 2~0.999 8;方法的加标回收率为62.3%~128%,相对标准偏差(RSD)为0.5%~15.8%,检出限(S/N=3)为0.070~6.902 μg/kg。该法操作简便,准确度好,灵敏度高,可用于竹笋产地土壤样品中42种POPs的同时测定。
中文关键词:多环芳烃  多氯联苯  有机氯农药  竹笋产地土壤  固相萃取  气相色谱-串联质谱(GC-MS/MS)
 
Determination of 42 Persistent Organic Pollutants in Geographical Original Soil of Bamboo Shoot by Gas Chromatography-Tandem Mass Spectrometry with Solid Phase Extraction
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∶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.
Key Words: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)
引用本文:张延平,陈振超,孙晓薇,沈丹玉,钟冬莲,莫润宏,汤富彬.固相萃取/气相色谱-串联质谱法测定竹笋产地土壤中42种持久性有机污染物[J].分析测试学报,2018,37(12):1431-1438.
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