水污染事故中半挥发性有机物应急监测方法研究  

The Research on the Method for Emergency Monitoring of Semi-volatile Organic Compounds in Water Pollution Accidents

作　　者：吕天峰[1] 张宝[1] 滕恩江[1] 吕怡兵[1] 

机构地区：[1]中国环境监测总站,北京100012

出　　处：《环境监测管理与技术》2013年第2期38-42,共5页The Administration and Technique of Environmental Monitoring

摘　　要：建立了车载式气相色谱/质谱联用仪(GC/MS)结合固相微萃取(SPME)前处理技术测定水体中半挥发性有机物(SVOCs)的方法,优化了萃取头类型、萃取温度与萃取时间、离子强度、解吸温度与解吸时间、搅拌速度等影响萃取效率的因素,以及仪器分析条件。24种SVOCs、7种OPPs和17种OCPs在1.00μg/L～40.0μg/L范围内线性良好,检出限为0.11μg/L～0.39μg/L,空白加标水样平行测定的RSD≤14.3%,回收率为51.0%～98.5%。A new method for transportable gas chromatography and mass spectrometry(GC /MS) with solidphase micro-extraction(SPME) technology was established in order to analyze semi-volatile organic compounds in water.Several parameters was studied and optimized: such as SPME fiber,extraction temperature,extraction time,ion intensity,thermal desorption temperature and time,stirring rate and so on.Under optimal conditions,the method possesses good linear range(1.00 μg/L ～ 40.0 μg/L),low detection limit(0.11 μg/L ～ 0.39 μg/L),good analytic precision(RSD≤14.3%) and excellent accuracy(the average recoveries were between 51.0% and 98.5%).The method was able to qualitatively and quantitatively analyze 24 kinds of SVOCs,7 kinds of OPPs,17 kinds of OCPs in water quickly and effectively.It is suitable for environment emergency monitoring for analysis of SVOCs in water.

关 键 词：半挥发性有机物 车载式气相色谱/质谱联用仪 固相微萃取 应急监测 水质 

分 类 号：O657.63[理学—分析化学]