You are here:
PARTICLE BEAM LIQUID CHROMATOGRAPHY-ELECTRON IMPACT MASS SPECTROMETRY OF DYES
Citation:
Yinon, J., T.L. Jones, AND L. Betowski. PARTICLE BEAM LIQUID CHROMATOGRAPHY-ELECTRON IMPACT MASS SPECTROMETRY OF DYES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/320 (NTIS PB90198680), 1989.
Description:
A liquid chromatograph was interfaced with a triple quadrupole mass spectrometer by means of a particle beam-type interface. he system was used for the analysis and characterization by electron impact mass spectra of a series of commercial dyes. he pure dyes were separated from their impurities with a reversed-phase C18 column using methanol-water as the mobile phase. etection limits were determined using the system as a single quadrupole mass spectrometer. ensitivity for dyes was found to be two to three orders of magnitude worse than with thermospray ionization using a wire repeller. haracterization of the azo dyes could be achieved by observing typical fragnent ions formed by cleavage of the N-C and C-N bond on either side of azo linkage and/or cleavage of the N=N double bond with transfer of two hydrogen atoms to form an amine.
