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Issue 8, 2014
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Improvement of column efficiency in MEMS-Based gas chromatography column

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Abstract

In this paper, micro gas chromatography columns were fabricated through the micro-electro-mechanical system (MEMS) technique. Two types of columns were designed, namely, open-tube and semi-packed columns. By comparing different structures, column efficiency was improved by embedding square posts in the channel to form a semi-packed column. The result showed that column efficiency of the semi-packed column reached 55 366 plates per m. This study was the first to report based on experimentation that MEMS-based columns can reach a plate number this high. The plate number was five times higher than the value previously reported. In addition, a 30 m-long Agilent HP-5 commercial capillary column was used to compare the results with findings obtained using a MEMS-based semi-packed column. The analytes were perfectly separated in both columns. The column efficiency of the HP-5 capillary column was 5490 plates per m, which was 10 times lower than that of the micro-fabricated, semi-packed column.

Graphical abstract: Improvement of column efficiency in MEMS-Based gas chromatography column

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Publication details

The article was received on 08 Aug 2013, accepted on 02 Dec 2013 and first published on 03 Dec 2013


Article type: Paper
DOI: 10.1039/C3RA44255A
Citation: RSC Adv., 2014,4, 3742-3747
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    Improvement of column efficiency in MEMS-Based gas chromatography column

    Y. Li, X. Du, Y. Wang, H. Tai, D. Qiu, Q. Lin and Y. Jiang, RSC Adv., 2014, 4, 3742
    DOI: 10.1039/C3RA44255A

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