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题名: Development of a Micro-flame Ionization Detector for Portable Gas Chromatography
作者: Wang Jian-Wei1, 2;  Peng Hong1, 2;  Duan Chun-Feng1;  Guan Ya-Feng1
关键词: Micro-flame ionization detector ;  Miniaturization ;  Structure ;  Polarization voltage
刊名: CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
发表日期: 2011-03-01
DOI: 10.3724/SP.J.1096.2011.00439
卷: 39, 期:3, 页:439-442
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: A micro-flame ionization detector (mu-FID) was developed. Differing from the traditional FID, air was introduced from the side of the upper part of the mu-FID body, flowing downwards into the burning chamber along a narrow round gap between the collection electrode and the inner wall of the detector body. When the coaxial flow of air reached the bottom of the chamber, it turned 180 degrees and flowed out through the hollow collector. The jet tip was located along the axis of the chamber and the collector, where the air flow was extremely stable, yielding extremely low noise level. A much higher polarization voltage was then applied to enhance ionization efficiency. Several important parameters were optimized, including the material and inner diameter of the jet tip, the length of collector, the distance between jet tip and collector, polarization voltage and gas flow rate. Under the optimized condition, the signal-to-noise ratios improved over one order of magnitude when polarization voltage increased from 150 V to 800 V. The limit of detection of the mu-FID was 1 x 10(-12) g/s, with a linear response of five orders of magnitude. Compared with traditional FID, the mu-FID only needs two kinds of gases (hydrogen and air) and gas consumption decreases 70%. The detector is small in volume, simple in structure, sensitive and easy to construct, suggesting that it is an excellent detector for portable GC. The mu-FID was also applied to analyze five phenolic compounds in real water samples.
语种: 英语
WOS记录号: WOS:000290841800029
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142454
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, Key Lab Separat Sci Analyt Chem, Dept Instrumentat & Analyt Chem, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Wang Jian-Wei,Peng Hong,Duan Chun-Feng,et al. Development of a Micro-flame Ionization Detector for Portable Gas Chromatography[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2011,39(3):439-442.
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