气袋采样-气相色谱法测定固定污染源废气中8种苯系物研究  

Determination of Eight Kinds of Benzene in Exhaust Gas from Stationary Source by Bag Sampling-Gas Chromatography

作　　者：谢璇 吴旸 王婷 方艳林 范国兰 Xie Xuan;Wu Yang;Wang Ting;Fang Yanlin;Fan Guolan(Jinan Eco-Environment Monitoring Center of Shandong Province,Jinan 250100,China;Shandong Motor Vehicle Exhaust Pollution Monitoring Center,Jinan 250102,China)

机构地区：[1]山东省济南生态环境监测中心,山东济南250100 [2]山东省机动车排气污染监控中心,山东济南250102

出　　处：《环境科学与管理》2024年第7期106-109,140,共5页Environmental Science and Management

基　　金：国家大气重污染成因与治理攻关项目“济南市细颗粒物和臭氧协同防控示范研究”(项目编号:DQGG202118)。

摘　　要：文章建立了同时检测固定污染源废气中8种苯系物的气相色谱法,并考察了方法的实用性。采用气袋采集,直接进样,使用DB-WAX毛细管柱分离,使用氢火焰离子化检测器检测。该方法测定的8种苯系物分离效果好,8种苯系物工作曲线的线性良好,相关系数均不小于0.998。对低、中、高三种浓度标准气体进行分析,测定结果的相对标准偏差和相对误差均符合要求。当采样体积为1 L,进样体积为1 mL时,在企业废气排放口可以测出部分苯系物,该方法适用于固定污染源废气中苯系物的分析。This study establishes a new gas chromatography for simultaneous determining the concentration of the eight kinds of benzene compounds in exhaust gas,as well as to investigate its applicability.The samples are collected by using gas bags,then the samples are separated through the DB-WAX capillary column and detected by a hydrogen flame ionization detector.The results showed that this method gave a good separation effect of the eight kinds of benzene compounds and the working curve of the eight kinds of benzene compounds showed a good correlation(r≥0.998).The relative standard deviation and relative error of determination results of standard gas with three level of low,middle,and high concentration can meet the requirements.With a sampling volume of 10 L and injection volume of 1 mL,several kinds of benzene can be detected from the sample.This method can be used for monitoring eight kinds of benzene in exhaust gas of stationary source.

关 键 词：气袋 固定污染源废气 苯系物 气相色谱法 

分 类 号：X831[环境科学与工程—环境工程]