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Digital Library/Journal of Forensic Sciences/

Analysis of fiber dyes by liquid chromatography mass spectrometry (LC-MS) with electrospray ionization: discriminating between dyes with indistinguishable UV-visible absorption spectra
Huang M, Russo R, Fookes BG, Sigman ME

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Source: JFS (March 2005)

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.

Keywords:
fiber dye identification, forensic science, liquid chromatography mass spectrometry, UV/visible detection
ISSN: 0022-1198
Paper ID: JFS2004223
DOI: 10.1520/JFS2004223

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Author Huang M, Russo R, Fookes BG, Sigman ME 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 , Committee on

 
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