Dissociation of Formic Acid and Deuteroformic Acids by Ionhyphen;Molecule Collision

摘要

The dissociation of 5.1 kev HCOOH+, DCOOH+, and HCOOD+ions by ionhyphen;molecule collision with H2, D2, He, N2, A, and Kr has been investigated in a mass spectrometer. Approximate values for the cross sections for the resultant fragment ions have been calculated. Positive ion fragments CHO+and CHO2+.are produced by loss of hydrogen from both of the possible positions. However, rupture of the Csngbnd;H bond is a factor of two more probable than cleavage of the Osngbnd;H bond in the formation of CHO2+. The CHO+ion fragment is formed mainly by removal of the hydroxyl group.