Journal of Textile Science & Engineering

Min Li

Publications

• Research Article
  Analysis of Sulfonated Anthraquinone Dyes by Electrospray Ionization Quadrupole Time-of-flight Tandem Mass Spectrometry
  Author(s): Min Li, Yufei Chen, David Hinks and Nelson R VinuezaMin Li, Yufei Chen, David Hinks and Nelson R Vinueza
  
  A tandem mass spectrometric method using a commercial quadrupole–time-of-flight (QTOF) mass spectrometer is described for the identification of sulfonated anthraquinone type dyes, having a 1-amino anthraquinone-2- sulfonate backbone. A total of 9 anthraquinone dye model compounds were evaporated and ionized via negative-ion electrospray ionization (ESI). Ionization of the sulfonated anthraquinone compounds primarily results in the formation of deprotonated molecules, [M-H]-. Once ionized, the ions were subjected to collision-activated dissociation (CAD). The type of neutral molecules or ions cleaved during CAD facilitates identification of the original compound. In most cases, a loss of 64 amu was observed for all dyes and was confirmed to be SO2 by high resolution mass spectrometry analysis. A unimolecular rearrangement of the sulfonate (SO3) group was triggere.. Read More»
  DOI: 10.4172/2165-8064.1000236

  Abstract PDF