Analysis of sludge extracts by high resolution GC with selective detectors

Abstract

SummaryCombination of various GC detectors by using a Varian effluent splitter with glass capillatycolumns has been found to be a rapid procedure for profiling organicsextractedfromsludgesand river sediments. The selectivity and the increased sensitivity of the thermionic nitrogen-phosphorus detector (TSD), the electron capture detector (ECD), and the flame photometric detector (FPD) over the flame ionization detectors (FID) or mass spectrometersallow the detection of compounds present at trace levels without need for extensive sample cleanup. Furthermore, the combination of two selective detectors may supplement the information with regard to the chemical functionalities required for structure elucidation.

Aspects of High-Resolution Gas Chromatography as Applied to the Analysis of Hydrocarbon Fuels and Other Complex Organic Mixtures. Volume 1

“…The use of effluent splitters with capillary columns is a popular procedure [104][105][106][107]. In such installations, a Chromatographie sample is injected into a single OTC, and the effluent from the column is split into two streams which pass simultaneously into separate detection devices.…”

“…In such installations, a Chromatographie sample is injected into a single OTC, and the effluent from the column is split into two streams which pass simultaneously into separate detection devices. Much like the series connection of detectors, effluent splitter techniques are very powerful for identifying or classifying compounds of different chemical families [104,107] as the split solute band can be sensed simultaneously with a parallel connection involving a selective detector and a relatively universal detector. Thus, considerable information can be obtained about the chemical nature of a substance.…”