顶空固相微萃取气相色谱法测定地下水中硝基苯  

Determination of nitrobenzene in groundwater by Headspace Solid-phase Microextracion and Gas Chromatography

作　　者：郭景海[1] 李锡清 

机构地区：[1]吉林化工学院环境与生物工程学院,吉林吉林132022 [2]吉林市龙潭区环境保护局,吉林吉林132022

出　　处：《吉林化工学院学报》2011年第11期91-94,共4页Journal of Jilin Institute of Chemical Technology

摘　　要：建立了一种顶空-固相微萃取-气相色谱法(HS-SPME-GC)测定地下水中硝基苯的分析方法.对萃取温度、萃取时间及解析时间等萃取条件进行了优化.结果表明用75μm的CAR/PDMS萃取涂层对地下水中的硝基苯萃取效果较好,硝基苯在10～1 000 ug/L的浓度范围内线性关系较好,方法检出限为1.0μg/L,相对标准偏差为2.33%(n=5),回收率为86.3%～96.8%.方法适合地下水中微量硝基苯的测定.A new method for the determination of nitrobenzene in groundwater has been established by coupling Headspace Solid-phase Mieroextraction （HS-SPME） with gas chromatography. Extraction conditions, such as extraction temperature, extraction time and desorption time were optimized. The results showed that a SPME fiber coated with 75 um CAR/PDMS was used to extract nitrobenzene from groundwater with satisfactory results. The linear ranges of nitrobenzene were from 10 to 1 000 ug/L. The detection limit and the relative standard deviation were 1.0 ug/L and 2.33% （ N = 5 ） , respectively. The recoveries were from 86.3% to 96. 8%, The method has been used for the detection of trace nitrobenzene in groundwater.

关 键 词：硝基苯 顶空固相微萃取 气相色谱 地下水 

分 类 号：X832[环境科学与工程—环境工程]