固相萃取搅拌棒萃取-气相色谱分析海水中的多环芳烃  

Determination of Polycyclic Aromatic Hydrocarbons in Seawater Using Stir Bar Sorptive Extraction-Gas Chromatography

作　　者：徐媛[1] 刘文民[1] 赵景红[1] 关亚风[1] 

机构地区：[1]中国科学院大连化学物理研究所现代分析与微型仪器研究室,大连116023

出　　处：《分析化学》2005年第10期1401-1404,共4页Chinese Journal of Analytical Chemistry

基　　金：科技部科学仪器攻关项目基金资助(No.2001BA210A06)

摘　　要：利用固相萃取搅拌棒(SBSE)萃取海水中的多环芳烃,然后用热解吸脱附-气相色谱分析.研究了萃取时间、添加NaCl浓度对萃取效率的影响.实验结果表明,SBSE方法对16种多环芳烃的萃取回收率分别在33.5%～122.4%之间;对标准样品的检出限为2.74～13.5ng/L;方法RSD为3.8%～13.1%.用此方法测定了大连海岸海水中的多环芳烃含量.The determination of polycyclic aromatic hydrocarbons （PAHs） in seawater was performed by stir bar sorptive extraction （SBSE）-thermal desorption and gas chromatogrpahic （GC） analysis. The extraction conditions such as extraction time and addition of salt were studied. The recoveries of the method were at the range of 33.5% -122.4% for 16 PAHs. The limits of detection were 2.74 -13.5 ng/L, the RSDs of the method were 3.8 - 13.1%. The PAHs in real life samples from the beaches of Dalian were determined by using SBSE-GC.

关 键 词：固相微萃取搅拌棒 热解吸 多环芳烃 样品预处理 气相色谱 气相色谱分析 固相萃取 搅拌棒 海水 NaCl浓度 

分 类 号：O661.1[理学—分析化学] O657.71[理学—化学]