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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28357

    Title: Automated gas chromatography with cryogenic/sorbent trap for the measurement of volatile organic compounds in the atmosphere
    Authors: Wang,JL;Chen,SW;Chew,C
    Contributors: 中央大學
    Date: 1999
    Issue Date: 2010-06-29 19:46:57 (UTC+8)
    Publisher: 化學研究所
    Abstract: An automated gas chromatographic system was constructed to easily adapt either the cryogenic trap or chemical sorbent trap for preconcentrating ambient levels of volatile organic compounds. Remarkable similarity in chromatograms from C-3 to C-10 was found between these two enrichment methods, except that the sorbent trap did not quantitatively trap the C-2-hydrocarbons, In contrast to cryogenic trapping, the chromatographic conditions for more volatile compounds were substantially improved using the sorbent trap. Water interference on the porous-layer open tubular column was also better managed using the sorbent trap for the continuous analysis of humid room air. The similarity in peak profiles between the GC-flame ionization detection (FID) and a commercial GC-MS system, regardless of concentration levels, facilitated compound identification on the FID chromatograms based on a field mission involving analysis of 106 air samples. (C) 1999 Elsevier Science BN. All rights reserved.
    Appears in Collections:[化學研究所] 期刊論文

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