title: Characterization of chlorinated compounds using a dual chlorine-selective pulsed discharge emission detector-helium-pulsed discharge photoionization detector system.
abstract: The Cl-selective pulsed discharge emission detector (Cl-PDED) response is dependent only upon the Cl content, irrespective of the molecular structures of the compounds. This provides a simple, fast quantitative method of analysis for chlorinated compounds. The response of the helium-pulsed discharge photoionization detector (He-PDPID) is a function of the molecular structure and the number of photoionizable electrons using the He2 band at 13.5-17.5 eV. The ratio of the responses of the two detectors is independent of concentration and can be used to characterize the Cl-containing compounds along with the retention time, or the ratio can be used as evidence for coelution. The dual Cl-PDED-He-PDPID detector system is a useful tool for peak identification. The effect of coeluting hydrocarbons on the Cl-PDED response was evaluated by spiking a gasoline sample with US Environmental Protection Agency mixture 502. All Cl-PDED responses were greater than 90% of the response in the absence of the hydrocarbons.
authors.affiliation: Department of Chemistry, University of Houston, TX 77204-5641, USA.
authors.forename: K
authors.initials: K
authors.lastname: Sun
authors.forename: W E
authors.initials: WE
authors.lastname: Wentworth
authors.forename: S D
authors.initials: SD
authors.lastname: Stearns
mesh_terms: D002713:Chlorine / Q000032:analysis*; D002849:Chromatography, Gas / Q000295:instrumentation*; D006371:Helium; D007477:Ions; D010777:Photochemistry; D012015:Reference Standards
chemical_list: D007477:Ions; D006371:Helium; D002713:Chlorine