直接进样利用便携式气相色谱法(PID)快速准确测定固定污染源废气中苯系物探究  

Rapid and Accurate Determination of Benzene Series in Waste Gas of Fixed Pollution Source by Portable Gas Chromatography (PID) with Direct Injection

作　　者：张玉萍 陈学银 Zhang Yuping;Chen Xueyin(Petrochina Qingyang Petrochemical Company,Qingyang 745000,China)

机构地区：[1]中国石油庆阳石化公司,甘肃庆阳745000

出　　处：《广东化工》2022年第14期156-160,共5页Guangdong Chemical Industry

摘　　要：本文建立了一套气袋取样,利用便携式气相色谱法(PID)直接进样快速测定固定污染源废气中苯系物的方法,验证了方法的实用性和准确性,取得了较好的效果。该法对固定污染源废气中 7 种苯系物的分离效果较好、线性良好、不需任何有机试剂。当采样体积为 3 L,进样量为 50 μL 时,7 种苯系物在 1.00~100.0 mg/m^(3)线性范围内,相关系数在 0.995 以上,检出限在 0.01~0.1 mg/m^(3)范围,加标回收率在 92.5 %~102.1 %之间,相对标准偏差均小于 5 %,是当前现场测定固定污染源废气中苯系物各组分快速准确、便捷可靠的检测方法之一。In this paper,a set of air bag sampling and portable gas chromatography (PID) direct sampling method for the rapid determination of benzene series in the waste gas of fixed pollution sources have been established.The practicability and accuracy of the method have been verified.The separation effect of seven benzene series in waste gas of fixed pollution source is good with good linearity and no organic reagent is needed.When the sampling volume was 3 L and the injection volume was 50 μL,the linear range of 7 benzenes was 1.00~100.0 mg/m~3,the correlation coefficient was above 0.995,the detection limit was0.01~0.1mg/m~3,and the spiked recoveries were 92.5 %~102.1 %.The relative standard deviations are all less than 5 %,which is one of the fast,accurate,convenient and reliable detection methods for benzene series components in the waste gas of fixed pollution sources.

关 键 词：气袋取样 便携式气相色谱法 光离子化检测器 快速准确测定 固定污染源废气 苯系物 

分 类 号：TQ[化学工程]