微波辅助萃取-气相色谱-质谱法测定大气可吸入颗粒物中痕量多环芳烃  

Determination of Trace Polycyclic Aromatic Hydrocarbons in Atmospheric Particulate Using Microwave-assisted Extraction Coupled with Gas Chromatography-Mass Spectrometry

作　　者：李核[1] 李攻科[1] 陈洪伟[1] 张展霞[1] 李拓 王伯光 

机构地区：[1]中山大学化学与化学工程学院,广州510275 [2]广州市环境保护科学研究所,广州510620

出　　处：《分析化学》2002年第9期1058-1062,共5页Chinese Journal of Analytical Chemistry

基　　金：广东省高教厅和广东省环保局基金资助项目

摘　　要：建立了微波辅助萃取 气相色谱 质谱联用测定大气可吸入颗粒物中痕量多环芳烃 (PAHs)的分析方法 ,优化了萃取时间、溶剂用量、微波辐射功率等微波萃取条件 ,并与超声波萃取方法进行了对照研究。结果表明 :除了苊、芴外 ,微波萃取方法的回收率在 85 %～ 130 %之间 ;方法的检出限在 0 .0 0 2～ 0 .0 16 μg m3 之间。通过实际样品中PAHs的分析表明 ,该法快速、溶剂用量小 ,满足痕量分析的要求。A method for the determination of trace polycyclic aromatic hydrocarbons (PAHs) in atmospheric particulate using microwave - assisted extraction coupled with gas chromatography mass spectrometry was developed. The optimium conditions for extraction, such as extraction time, volume of extractant and power, were studied in detail. The experimental results were compared with those obtained by traditional method of ultrasonic extraction. The average recoveries of PAHs (not including acenaphtylene and fluorene) ranged from 85 % to 130 %, and the detection limits ranged from 0.002 mug/m(3) to 0.016 mug/m(3). The method was used for the determination of trace PAHs in real atmospheric particulate sample. It is a rapid, efficient and solvent saving method.

关 键 词：测定 大气 可吸入颗粒物 微波辅助萃取 多环芳烃 气相色谱-质谱 痕量分析 有机污染物 

分 类 号：X132[环境科学与工程—环境科学]