ION MOBILITY SPECTROMETRIC STUDIES OF ORGANOPHOSPHORUS COMPOUNDS

The mobility spectra of several organophosphorus compounds were measured by ion mobility spectrometric methods. The correlation between the mass and structure of the ions formed and their mobility was investigated. It was found that compounds in which the phosphorus atom is trivalent had higher mobilities than their phosphonate isomers. It was also found that substitution of an alkoxy group by chlorine had little effect on the mass-mobility correlation. The tendency of these compounds to form protonated dimers was studied, and the protonated monomer to dimer ratio in dimethylmethylphosphonate as a function of concentration was measured.