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题名: Identification of unknown compounds on the basis of retention index data in comprehensive two-dimensional gas chromatography
作者: Pang, Tao;  Zhu, Shukui;  Lu, Xin;  Xu, Guowang
关键词: alkanes ;  comprehensive two-dimensional gas chromatography ;  isovolatile curve ;  retention index
刊名: JOURNAL OF SEPARATION SCIENCE
发表日期: 2007-04-01
DOI: 10.1002/jssc.200600471
卷: 30, 期:6, 页:868-874
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: The identification of unknown compounds in complex samples is very difficult. Comprehensive two-dimensional gas chromatography (GC x GC) provides very good resolution and improved identification reliability. Mass spectrometry is a powerful identification tool and retention index data are another good approach to this end. In this study, a second-order polynomial was used to calculate retention index data based on n-alkanes beyond the region of the 'isovolatile' curve in GC x GC, and the results in the 2nd dimension were validated by using the same stationary phase column in one-dimensional GC. To test the usefulness of the method, volatile compounds in a tobacco leaf extract fraction were analyzed using GC x GC, and 60 compounds were identified on the basis of their retention indices.
关键词[WOS]: FLIGHT MASS-SPECTROMETRY ;  TOBACCO ESSENTIAL OILS ;  CIGARETTE-SMOKE ;  VOLATILE OIL ;  POLYDIMETHYLSILOXANE ;  HYDROCARBONS ;  FRACTION ;  SAMPLES ;  SYSTEM ;  FOOD
语种: 英语
WOS记录号: WOS:000246348000012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140443
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatog R&A Ctr, Dalian 116023, Peoples R China

Recommended Citation:
Pang, Tao,Zhu, Shukui,Lu, Xin,et al. Identification of unknown compounds on the basis of retention index data in comprehensive two-dimensional gas chromatography[J]. JOURNAL OF SEPARATION SCIENCE,2007,30(6):868-874.
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