CHLOROFLUOROCARBON CFCS, POTENTIAL ALTERNATIVE HCFCS AND HFCS, AND RELATED CHLORINATED COMPOUNDS - MASS-SPECTRAL STUDY .2.

In a previous publication, mass spectrometry was applied to the study of several ions formed by dissociative ionization of ethanes, partiall y substituted with fluorine and chlorine, and to the determination of the fragmentation pattern of each related compound, The aim of the pre sent investigation was to extend this mass spectral study (70 eV and l ow ionization energy) to a group of closely related analogs, hydrofluo rocarbons (HCFCs), HFCs, chlorinated fluorocarbons, and chlorinated hy drocarbons-halogenated methane, ethane, and propane molecules-to make an attempt to predict the relative bond strength and then the behavior -metabolic pathway and tropospheric degradation-of new HCFCs and HFCs. (C) 1997 Academic Press.