Trace analysis for organic nitro compounds by gas chromatography-electron-capture/photoionization detection methods

Abstract

Combined detectors in gas chromatography (GC), such as electron-capture (ECD) and photoionization detectors (PID) have been utilized for improved identification of a wide variety of organic nitro compounds. GC retention times together with relative response factors and ratios of ECD/PID response factors are reported. Detection limits with the ECD and PID, relative response factors and ratios of relative response factors were derived from results for mixtures of organic nitro compounds separated by GC with temperature programming. A new type of GC packing material, covalently bonded Permabond supports, was utilized for most of these studies.