室内空气中总挥发性有机物的热解吸-毛细管柱气相色谱测定法  

Determination of total volatile organic compounds in indoor air by thermal desorption-capillary gas chromatography

作　　者：顾妍丽[1] 周厚松[1] 凌霞[1] 刘文卫[1] 

机构地区：[1]江苏省无锡市疾病预防控制中心,江苏无锡214023

出　　处：《中国卫生检验杂志》2012年第10期2305-2307,共3页Chinese Journal of Health Laboratory Technology

基　　金：江苏省预防医学科研课题(Y201022);无锡市卫生系统科研项目(ZD1009)

摘　　要：目的:建立热解吸-毛细管柱气相色谱法测定室内空气中总挥发性有机物(TVOC)的方法。方法:用活性炭管吸附,热解吸进样,FFAP大口径毛细管气相色谱法对室内空气中24种挥发性有机物进行分离和测定。结果:24种挥发性有机物的线性方程相关系数为0.9963～0.9999,相对标准偏差为0.3%～7.8%,其中苯、甲苯、二甲苯的检出限为(0.5～1)×10-3μg/ml。结论:该方法操作简便,对仪器设备要求不高,准确灵敏,适用于空气中总挥发性有机物和低浓度组分有机物的测定。Objective：To establish a method for the determination of total volatile organic compounds in indoor air by thermal desorption - capillary gas chromatography. Methods： Indoor air samples were collected with active carbon tubes and thermal desorbed, 24 volatile organic compoundswere determined by GC with FFAP capillary col- umn separation. Results： The correlation coefficients of the method ranged from 0. 9963 to 0. 9999; the RSDs ranged from 0.3% to 7.8%. The detection limits of benzene, toluene, xylene ranged from 0.5 × 10^-3 to 1 × 10^-3 μg/ml. Conclusion： The method is simple, accurate and sensitive. It is applicable for determining total vola- tile organic compounds and low level of volatile organic compounds in indoor air.

关 键 词：室内空气 挥发性有机物 气相色谱法 热解吸 

分 类 号：O657.71[理学—分析化学]