便携式气相色谱-质谱法测定环境空气中挥发性有机物的方法验证  

Determination of Volatile Organic Compounds in Ambient Air by Portable Gas Chromatography-Mass Spectrometry

作　　者：张峰 Zhang Feng(Xinxiang Ecological Environment Monitoring Center of Henan Province,Xinxiang 453000,China)

机构地区：[1]河南省新乡生态环境监测中心,河南新乡453000

出　　处：《广东化工》2024年第13期110-114,93,共6页Guangdong Chemical Industry

摘　　要：本文建立了环境空气中挥发性有机物的便携式气质联用分析方法,规范了实验室检测步骤。进行了52种挥发性有机物的高/低浓度曲线分析,检出限和测定下限,精密度和正确度的分析。结果表明:52种化合物的高/低浓度校准曲线的相关系数均大于0.990,线性关系良好;检出限范围为0.4μg/m^(3)~5.0μg/m^(3),测定下限的范围为1.7μg/m^(3)~20.0μg/m^(3),不大于标准中检出限和测定下限;相对标准偏差均小于25%,加标回收率范围均在70%~130%之内,具有良好的精密度和准确度。该方法适用于环境空气中挥发性有机物的测定。In this paper,a portable gas chromatography-mass spectrometry method for volatile organic compounds in ambient air was established and the laboratory detection procedures were standardized.The analysis of high/low concentration curve,detection limit and determination limit,precision and accuracy of 52 kinds of volatile organic compounds was carried out.The results showed that the correlation coefficients of the high/low concentration calibration curves for 52 compounds were all greater than 0.990,indicating a good linear relationship.The range of detection limit was 0.4μg/m^(3)~5.0μg/m^(3),and the range of determination limit was 1.7μg/m^(3)~20.0μg/m^(3),which were not greater than the detection limit and determination lower limit in the standard.The relative standard deviation was less than 25%,and the recovery range of standard addition was within 70%~130%,indicating good precision and accuracy.This method is suitable for the determination of volatile organic compounds in ambient air.

关 键 词：便携式气相色谱-质谱法 挥发性有机物 检出限 精密度 正确度 

分 类 号：X831[环境科学与工程—环境工程]