摘要
无组织排放的苯系物和总烃对生态环境及人类健康具有不可逆转的危害性,实现苯系物和总烃的快速准确分析一直以来是环境空气监测的研究热点。基于双FID检测器的多维气相色谱仪,开发出用于总烃、甲烷、苯、甲苯、乙苯、对二甲苯、间二甲苯、邻二甲苯以及苯乙烯的快速分析方法。结果表明,一次进样可在12 min内完成目标组分的准确快速分析,组分在测量浓度范围内呈现良好的线性和重复性。该方法具有优异的方法检出限,准确性在−7.7%~0.2%之间。方法可在不同时空场景下对分析仪器进行在线校准,在环境空气现场走航监测方面具有潜在应用价值。
Fugitive emissions of benzene series compounds and total hydrocarbons pose irreversible harm to the ecological environment and human health.The rapid and accurate analysis of these compounds has long been a research focus in ambient air monitoring.A quick method for the analysis of total hydrocarbons,methane,benzene,toluene,ethylbenzene,p-xylene,m-xylene,o-xylene,and styrene was developed using a multi-dimensional gas chromatograph with dual FID detectors.The results show that the target components can be accurately analyzed within 12 minutes with a single injection,and the components exhibit good linearity and repeatability across the measurement range.This method demonstrates excellent detection limits,with accuracy ranging from−7.7%to 0.2%.The method can be applied for on-line calibration of analytical instruments in various spatiotemporal scenarios,showing potential application value in field mobile monitoring of ambient air.
作者
邓文清
邓凡锋
张婷
徐冰艳
熊华竞
潘义
DENG Wenqing;DENG Fanfeng;ZHANG Ting;XU Bingyan;XIONG Huajing;PAN Yi(Institute of Chemistry,National Institute of Measurement and Testing Technology,Chengdu 610021,China)
出处
《计量科学与技术》
2024年第7期3-9,共7页
Metrology Science and Technology
基金
国家标准物质资源共享平台项目(APT2302-6)。
关键词
计量学
气相色谱
苯系物
甲烷
总烃
快速分析
metrology
gas chromatography
benzene series
methane
total hydrocarbons
rapid analysis
