摘要
用丙酮-正己烷(1:1体积比)混合溶剂,通过微波萃取法提取土壤中的16种多环芳烃组分。萃取溶液经硅胶小柱净化,最后用气相色谱-质谱法分析。以石英砂为基体进行加标回收测定。16种多环芳烃的检测限为0.18～0.53μg/kg,经精密度试验,相对标准偏差均<5%,回收率在75.5%～108%之间。
Microwave was used to extract 16 polycyclic aromatic hydrocarbons in soils with acetone： n -hexane （1：1） mixed solvent. After the purification process by a silica gel column the solution was passed to the gas chromatography - mass spectrometry for analysis. Standard addition recovery rate was determined with quartz sand as substrate. The testing was performed over 16 polycyclic aromatic hydrocarbons with the detection limit ranging between 0.18 ug/kg to 0.53 ug/kg,while in precision testing the relative standard deviations was below 5% with recovery rate staying between 75.5% and 108%.
出处
《环境监控与预警》
2010年第1期20-23,共4页
Environmental Monitoring and Forewarning
关键词
微波萃取
气相色谱-质谱法
多环芳烃
土壤
microwave extraction
GC - MS spectrometry
polycyclic aromatic hydrocarbons
soil
