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预浓缩/柱箱制冷GCMS/FID法测定大气中117种挥发性有机物
引用本文:单丹滢,张烃,曹冠,汤卡,陈春榕,杜祯宇,张秀蓝,董树屏,杜世娟,刘金林,张国忠. 预浓缩/柱箱制冷GCMS/FID法测定大气中117种挥发性有机物[J]. 环境化学, 2022, 41(1): 398-404
作者姓名:单丹滢  张烃  曹冠  汤卡  陈春榕  杜祯宇  张秀蓝  董树屏  杜世娟  刘金林  张国忠
作者单位:国家环境分析测试中心,北京,100029;岛津企业管理(中国)有限公司,北京,100020
基金项目:联合国环境规划署臭氧秘书处多变基金-制冷维修行业第二阶段HCFCs淘汰管理计划及能力建设项目“大气中ODS和HFCs监测研究项目”;中日友好环境保护中心科技发展基金资助.
摘    要:建立了罐采样、吸附剂辅助电子制冷预浓缩-柱箱制冷GCMS/FID同时测定大气中117种挥发性有机物(VOCs)的方法.样品经填充吸附剂的电子制冷预浓缩系统除水、除CO2、浓缩和热脱附后,采用柱箱制冷及GCMS/FID的多维切割单元,将5种C2-C3组分切到二维色谱柱进行分离并进入FID检测,甲醛及其他111种VOCs组...

关 键 词:电子制冷预浓缩  GCMS/FID  117种挥发性有机物  多维切割  柱箱制冷

Determination of 117 volatile organic compounds in atmosphere by preconcentration/column refrigeration GCMS/FID
SHAN Danying,ZHANG Ting,CAO Guan,TANG Ka,CHEN Chunrong,DU Zhenyu,ZHANG Xiulan,DONG Shuping,DU Shijuan,LIU Jinlin,ZHANG Guozhong. Determination of 117 volatile organic compounds in atmosphere by preconcentration/column refrigeration GCMS/FID[J]. Environmental Chemistry, 2022, 41(1): 398-404
Authors:SHAN Danying  ZHANG Ting  CAO Guan  TANG Ka  CHEN Chunrong  DU Zhenyu  ZHANG Xiulan  DONG Shuping  DU Shijuan  LIU Jinlin  ZHANG Guozhong
Affiliation:(National Research Center for Environmental Analysis and Measurements(CNEAC),Beijing,100029,China;Shimadzu(China)Co.,Ltd.,Beijing,100020,China)
Abstract:A method for the determination of 117 volatile organic compounds(VOCs)in atmosphere by flask sampling,adsorbent-assisted electronic refrigeration preconcentration-CRG oven cooling GCMS/FID was established.After removal of water and CO2,concentrating and thermal desorption in the electronic refrigeration preconcentration system equipped with adsorbents,five C2-C3 components were cut and introduce into the second chromatographic column by the CRG oven cooling and multidimensional cutting unit of GCMS/FID,and then detected by FID.Formaldehyde and other 111 VOC components were separated by the first chromatographic column and detected by MS,formaldehyde was detected by SIM mode,and other compounds were detected by Scan mode.Components in FID are quantified by external standard calibration curve,while cpmponents in Mare quantified by internal standard calibration curve.The condition parameters of pre-concentration system,multi-dimensional cutting,mass spectrometry,and gas chromatography on the test results were investigated.The effect of CRG oven cooling were investigated and evaluated.The good linearity of 117 VOCs are found in the range of 0.5—20 nmol·mol-1(formaldehyde 2.5—100 nmol·mol-1),and the correlation coefficient(R)is 0.9924—0.9999.the detection limit of the method were obtained as 0.071—0.718μg·m-3,and the quantitative limit was 0.284—2.872μg·m-3.
Keywords:electronic refrigeration preconcentration  GCMS/FID  117 volatile organic compounds  multidimensional cutting  CRG oven cooling.
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