Volume 50, Issue 3 (May 2005)

    Analysis of Fiber Dyes By Liquid Chromatography Mass Spectrometry (LC-MS) with Electrospray Ionization: Discriminating Between Dyes with Indistinguishable UV-Visible Absorption Spectra

    (Received 2 June 2004; accepted 30 October 2004)

    Published Online: April

    CODEN: JFSOAD

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    Abstract

    Liquid chromatography mass spectrometry (LC-MS) is shown to provide high discriminating power for the identification of textile dyes that can not be reliably distinguished on the basis of their UV/visible absorption profile. Seven pairs of commercial dyes having nearly identical UV/visible absorption profiles and absorption maxima within 5 nm, were identified successfully by LC-MS. Two pairs of cotton fibers, which were indistinguishable by microspectrophotometry, were differentiated by LC-MS. A single wavelength UV/visible detector was used to monitoring dye elution from the column. The utility of the method for comparing questioned and known fibers is discussed.


    Author Information:

    Fookes, BG
    University of Central Florida, Orlando, FL

    Sigman, ME
    National Center for Forensic Science and Department of Chemistry, University of Central Florida, Orlando, FL

    Huang, M
    National Center for Forensic Science, University of Central Florida, Orlando, FL

    Russo, R
    University of Central Florida, Orlando, FL


    Stock #: JFS2004223

    ISSN: 0022-1198

    DOI: 10.1520/JFS2004223

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    Author
    Title Analysis of Fiber Dyes By Liquid Chromatography Mass Spectrometry (LC-MS) with Electrospray Ionization: Discriminating Between Dyes with Indistinguishable UV-Visible Absorption Spectra
    Symposium , 0000-00-00
    Committee E30