加速溶剂萃取-GC-MS检测土壤中萘及其取代衍生物  

Determination of naphthalene and its derivatives by using accelerated solvent extraction coupled with gas chromatography-mass spectrometry

作　　者：张莉[1] 李科[1] 刘佳 张辰凌[1] ZHANG Li;LI Ke;LIU Jia;ZHANG Chen-ling(Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Zhengding 050803,Hebei,China)

机构地区：[1]中国地质科学院水文地质环境地质研究所监测中心,河北正定050803

出　　处：《湖北农业科学》2019年第7期108-110,121,共4页Hubei Agricultural Sciences

基　　金：中国地质调查局地调项目(12120115055301)

摘　　要：建立了土壤中萘及其取代衍生物的加速溶剂萃取方法。土壤经石英砂分散后,装入加速溶剂萃取仪萃取池中,以二氯甲烷-丙酮(V/V,1∶1)为溶剂,在炉温100℃、压力10.3422 MPa条件下萃取10 min。萃取液经过K-D浓缩后,用氟罗里硅土小柱净化,用DB-5MS柱分离,以气相色谱-质谱定性定量检测。对空白土壤样品进行3种浓度水平的加标试验,其平均回收率为64.0%～102.6%,相对标准偏差为7.6%～15.2%。A method that accelerated solvent extraction of naphthalene and its derivatives was carried out in this research. A soil sample, mixed with some silica sand, was placed in the extract cell. Objectives were extracted by dichloromethane-acetone(V∶V,1∶1) at extraction temperature of 100 ℃ and extraction pressure of 10.3422 MPa for 10 min. The eluent was purfied using florisil silica column after concentrated by K-D. Then naphthalene and its derivatives were analyzed by gas chromatography-mass spectrometry using a DB-5MS column. Spiked recoveries of three concentrations ranged from 64.0%~102.6% with relative standard deviation 7.6%~15.2%(n=7).

关 键 词：土壤 萘及取代衍生物 加速溶剂萃取 气相色谱-质谱 

分 类 号：O657.63[理学—分析化学]