MoO-15
MEASUREMENT OF CID CROSS SECTIONS IN ORGANOPHOSPHORUS COMPOUNDS AND KETONE-ALKANOLAMINE CLUSTERS USING THE VG QUATTRO I APCI TRIPLE QUADRUPOLE MASS SPECTROMETER : COMPARISON WITH ION MOBILITY SPECTROMETRY
Gary Corinoa and Tiang-Hong Ganb
aDivision of Wool Technology, Commonwealth Scientific and Industrial Research Organization, P.O. Box 21, Belmont, Victoria 3216
bAeronautical and Maritime Research Laboratory, Defence Science and Technology Organization, P.O. Box 4331, Melbourne, Victoria 3001
Measurements of collision induced dissociation (CID) cross sections by APcI tandem mass spectrometry have been mainly conducted using the Sciex TAGA 6000 API triple quadrupole mass spectrometer. Even then, the method has not been widely used despite the opportunities to gain physical and analytical information which include size of product ions, differences in molecular structure and relative ion stability.
This talk describes the determinations of CID cross sections for some organophosphorus compounds (OPC) and ketone - alkanolamine clusters using the VG Quattro I APcI triple quadrupole mass spectrometer. Measured cross sections were reproducible and found to be in good agreement with values obtained from the Sciex instrument and those derived from a complementary technique, ion mobility spectrometry. In addition, the results were reasonably modelled by a simple kinetic scheme.
Specific limitations in the Quattro I relate to ion losses by scattering, translational energy distribution, and a lower collision gas thickness resulting from multiple collision conditions due to the collision cell design.