Simultaneous analysis of atmospheric halocarbons and non-methane hydrocarbons using two-dimensional gas chromatography

NCU Institutional Repository > 理學院 > 化學學系 > 期刊論文 > Item 987654321/50787

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50787

题名:	Simultaneous analysis of atmospheric halocarbons and non-methane hydrocarbons using two-dimensional gas chromatography
作者:	Wang,CH;Chiang,SW;Wang,JL
贡献者:	化學學系
日期:	2010
上传时间:	2012-03-27 18:10:09 (UTC+8)
出版者:	國立中央大學
摘要:	A gas chromatographic system was constructed to simultaneously measure ambient non-methane hydrocarbons (NMHCs) and halocarbons, which play significant roles in tropospheric ozone formation and stratospheric ozone loss. respectively. A heart-cut device based on a Deans switch was connected to two capillary Columns to cover the full range of NMHCs and halocarbons. Analytes more volatile than C(6) NMHCs and the halocarbon CFC-113 were separated with a PLOT column, while the remaining less volatile compounds were separated with a DB-1 column. Merge-and-split of the flows at the end of the two columns allowed the NMHCs and halocarbons to be observed simultaneously by electron capture detection (ECD) and flame ionization detection (FID). To avoid peak-overlap from the two columns while merging, programmed pressures were incorporated to control the Deans switch. In addition to the advantage of measuring two important classes of compounds in the atmosphere at the same time, this method has the additional benefit Of using the homogeneity of atmospheric CFC-113 as an "intrinsic" internal reference. Thus, better data continuity, less consumption of gas standards, and real-time quality control can all be achieved. (C) 2009 Elsevier B.V. All rights reserved.
關聯:	JOURNAL OF CHROMATOGRAPHY A
显示于类别:	[化學學系] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	345	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing

数据加载中.....