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气相色谱-质谱联用法在线观测大气中的氢氟碳化物和全氟化碳 被引量:6

In-situ measurement of atmospheric hydrofluorocarbon and perfluorocarbons using a custom-made GC-MS system
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摘要 利用组装的气相色谱-质谱联用系统(GC-MS)同时测定大气中6种氢氟碳化物(HFCs)和4种全氟化碳(PFCs),空气样品采样的时间分辨率120 min,精度范围0.15%—3.11%,准确度范围-1.52%—0.63%.对2011年2月在北京上甸子站的实验观测结果进行分析,获得HFC-23、HFC-32、HFC-134a、HFC-143a、HFC-125、HFC-152a、CF4、PFC-116、PFC-218、PFC-318的本底和非本底浓度,表明该系统适用于大气中HFCs和PFCs浓度在线观测. A custom-made GC-MS system was designed for in-situ measurement of trace atmospheric hydrofluorocarbons(HFCs) and perfluorocarbons(PFCs).The time resolution of the air samples is 120 min.The precision and accuracy ranges are 0.15%—3.11% and-1.52%—0.63%,respectively.The field measurement results during 2011-02-01—2011-02-28 at the Shangdianzi background station show that the system is able to capture both the background and pollution signals and can be used for in-situ background atmospheric measurements of HFCs and PFCs.
出处 《环境化学》 CAS CSCD 北大核心 2012年第9期1405-1411,共7页 Environmental Chemistry
基金 国家自然科学基金重点项目(41030107) 中国气象科学研究院基本科研业务费专项(2010Y003) 科技部对欧盟科技合作专项(1015)资助
关键词 氢氟碳化物(HFCs) 全氟化碳(PFCs) 气相色谱-质谱联用(GC-MS) 在线观测 hydrofluorocarbons(HFCs) perfluorocarbons(PFCs) gas chromatography-mass spectrometry(GC-MS) in-situ measurement
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