Direct and simultaneous determination of trace-level carbon tetrachloride, peroxyacetyl nitrate, and peroxypropionyl nitrate using gas chromatography-electron capture detection

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	Direct and simultaneous determination of trace-level carbon tetrachloride, peroxyacetyl nitrate, and peroxypropionyl nitrate using gas chromatography-electron capture detection
	Zhang, Gen ; Mu, Yujing ; Liu, Junfeng ; Mellouki, Abdelwahid
刊名	Biochemistry & Molecular Biology; Chemistry
	2012
卷号	1266 期号:1 页码:110-115
关键词	Peroxyacetyl nitrate Peroxypropionyl nitrate Capillary column GC-ECD Detection
ISSN号	0021-9673
中文摘要	Gas chromatography equipped with electron capture detector (GC-ECD) has been widely used for detecting atmospheric peroxyacetyl nitrate (PAN) and peroxypropionyl nitrate (PPN). However, to the best of our knowledge, only a few capillary columns have been adopted for separation to achieve the direct and simultaneous analysis of the two atmospheric pollutants. This paper demonstrates a novel method for directly and simultaneously measuring atmospheric carbon tetrachloride (CCI4), PAN, and PPN using GC-ECD with a DB-1 separation column. The responses of the GC-ECD to PAN. PPN, and CCI4 were individually calibrated by using gas mixtures prepared via volatilization of synthesized solutions of PAN and PPN or high-purity CCI4 reagent in a Teflon Bag. The concentrations of PAN and PPN in the synthesized solutions were quantified by ion chromatography (IC). Further calibration of the GC-ECD for PAN was conducted by in situ photochemical formation of gaseous PAN which was quantified by a NOx analyzer. The two calibration methods agreed well with each other, and the overall uncertainties for measuring atmospheric PAN were estimated to be +/- 13% and +/- 15% based on the calibrations of IC and NOx, respectively. The detection limits (three times the signal to noise ratio) for PAN, PPN, and CCI4 were estimated to be 22, 36, and 5 pptv (parts per trillion by volume), respectively. The atmospheric concentrations of these compounds were measured for several days in August in Beijing, and the values obtained in this study were found to be in good agreement with the data reported in the literature for Beijing using other GC-ECD methods. (C) 2012 Elsevier B.V. All rights reserved.
WOS记录号	WOS:000311465400014
公开日期	2014-11-26
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/8010]
专题	生态环境研究中心_大气环境科学实验室
推荐引用方式 GB/T 7714	Zhang, Gen,Mu, Yujing,Liu, Junfeng,et al. Direct and simultaneous determination of trace-level carbon tetrachloride, peroxyacetyl nitrate, and peroxypropionyl nitrate using gas chromatography-electron capture detection[J]. Biochemistry & Molecular Biology; Chemistry,2012,1266(1):110-115.
APA	Zhang, Gen,Mu, Yujing,Liu, Junfeng,&Mellouki, Abdelwahid.(2012).Direct and simultaneous determination of trace-level carbon tetrachloride, peroxyacetyl nitrate, and peroxypropionyl nitrate using gas chromatography-electron capture detection.Biochemistry & Molecular Biology; Chemistry,1266(1),110-115.
MLA	Zhang, Gen,et al."Direct and simultaneous determination of trace-level carbon tetrachloride, peroxyacetyl nitrate, and peroxypropionyl nitrate using gas chromatography-electron capture detection".Biochemistry & Molecular Biology; Chemistry 1266.1(2012):110-115.