Analysis of fiber dyes by liquid chromatography mass spectrometry (LC-MS) with electrospray ionization: Discriminating between dyes with indistinguishable UV-Visible absorption spectra

    Authors

    M. Huang; R. Russo; B. G. Fookes;M. E. Sigman

    Comments

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    Abbreviated Journal Title

    J. Forensic Sci.

    Keywords

    forensic science; fiber dye identification; liquid chromatography mass; spectrometry; UV/visible detection; AZO DYES; SULFONATED DYES; TEXTILE FIBERS; THERMOSPRAY; Medicine, Legal

    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 run, 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 comparim, questioned and known fibers is discussed.

    Journal Title

    Journal of Forensic Sciences

    Volume

    50

    Issue/Number

    3

    Publication Date

    1-1-2005

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    526

    Last Page

    534

    WOS Identifier

    WOS:000228818800006

    ISSN

    0022-1198

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