GC-ECD测定环境空气中的四氟甲烷和六氟乙烷  

Determination of Tetrafluoromethane and Hexafluoroethane in Ambient Air by GC-ECD

作　　者：于瑞祥[1] 姜阳[1] 董翊[1] Yu Ruixiang;Jiang Yang;Dong Yi(Shanghai Institute of Measurement and Testing Technology,Shanghai 201203,China)

机构地区：[1]上海市计量测试技术研究院,上海201203

出　　处：《山东化工》2020年第10期88-89,共2页Shandong Chemical Industry

基　　金：上海市市场监督管理局项目(I00RJ1810)。

摘　　要：建立了气相色谱-电子捕获检测器测定环境空气中四氟化碳和六氟乙烷的检测方法。样品经铝塑复合膜气体采样袋现场采集后直接进样分析。四氟化碳和六氟乙烷的浓度在0.1μmol/mol^10.0μmol/mol呈良好线性,线性相关系数(r)分别为0.9999和0.9996,在三个浓度水平下加标回收率为97.9%~100.1%,相对标准偏差(RSD)(n=6)为1.0%~2.6%,以三倍信噪比(3S/N)确定检出限分别为0.05μmol/mol和0.10μmol/mol。A method for the determination of trace nitrogen trifluoride in ambient air by gas chromatography with electron capture detector was established.The sample was collected and analyzed directly.Results showed good linear ranges for tetrafluoromethane and hexafluoroethane from 0.1μmol/mol^10.0μmol/mol with correlation coefficient(r)0.9999 and 0.9996,respectively.The mean recoveries were in the range of 97.9%-100.1%at three spiked levels and the relative standard deviations(RSDs)were 1.0%~2.6%.The limit of detection(LOD)was of 0.05μmol/mol and 0.10μmol/mol,respectively.

关 键 词：气相色谱 电子捕获检测器 四氟化碳 六氟乙烷 环境空气 检测 

分 类 号：X831[环境科学与工程—环境工程]