便携式气相色谱-质谱联用仪用于测定环境中VOCs的可靠性研究  

Feasibility Study of Portable Gas Chromatography-Mass Spectrometry for the Determination of VOCs in the Environment

作　　者：李学辉[1] 李亚飞[1] 于志强[1] 马俊刚 陈希尧[1] Li Xuehui;Li Yafei;Yu Zhiqiang;Ma Jungang;Chen Xiyao(Shanghai Institute of Measurement and Testing Technology,Shanghai 200233,China;Suzhou Juyang Environmental Protection Technology Co.,Ltd,Suzhou 215000,Jiangsu,China)

机构地区：[1]上海市计量测试技术研究院,上海200233 [2]苏州聚阳环保科技股份有限公司,江苏苏州215000

出　　处：《绿色科技》2023年第22期102-108,共7页Journal of Green Science and Technology

摘　　要：针对环境空气中VOCs成分较复杂,现场采样后在实验室用大型仪器分析费时且成本高,同时也为满足环境监测系统对VOCs能实时监测的要求;采用便携式气相色谱-质谱联用仪分析了52种VOCs混合标气,从定性准确性、定量重复性、灵敏度、线性相关性、色谱柱的温度控制稳定性、色谱柱程序升温重复性等方面进行了分析,试验结果表明:便携式气相色谱-质谱联用仪的技术指标满足国家相关计量法规中的要求,能很好地用于分析环境中不同浓度VOCs;便携式气相色谱-质谱联用仪可用于对环境中VOCs实时监测,为政府监管平台提供技术支持。Due to the complexity of VOCs components in ambient air,it is time-consuming and costly to analyze them with large instruments in the laboratory after field sampling.At the same time,in order to meet the real-time monitoring of VOCs by environmental monitoring system,52 kinds of VOCs mixed standard gases were analyzed by portable gas chromatography-mass spectrometry in terms of quantitative accuracy,repeatability,sensitivity,linear correlation,stability of column temperature control and repeatability of column temperature program.The test results showed that the technical index of the portable gas chromatography-mass spectrometry met the requirements of the relevant national metrology laws and regulations,and could be used to analyze different concentrations of VOCs in the environment.Portable gas chromatography-mass spectrometry can be used for real-time monitoring of VOCs in the environment,and provide technical support for government regulatory platforms.

关 键 词：便携式 定性准确性 定量重复性 灵敏度 线性 稳定性 VOCS 

分 类 号：TS207.5[轻工技术与工程—食品科学]