PULSED DISCHARGE PHOTOIONIZATION DETECTOR - APPLICATION TO ANALYSIS OF CHLORO ALKANES ALKENES

A windowless pulsed discharge photoionization detector (PDPID) is desc ribed which uses the emission spectra from the discharge in helium and Ar/Kr doped helium. The emission from helium is a continuum ranging f rom 13.5-17.7 eV which ionizes all compounds except neon. The emission from 5.4% Ar/Re ranges from 9.3-11.8 eV and ionizes most organic comp ounds and many inorganic compounds. The emission from 1.36% Kr/He cons ists principally of the resonance lines at 10.6 and 10.1 eV. These PDP IDs are used to analyze a 12 component mixture containing principally chloro alkane/alkenes. The relative responses of the PDPID combined wi th the relative retention time can be used to qualitatively identify t he chloro compounds.