Parallel gas chromatography-mass spectrometry and gas proportional counting

Abstract

The bonded phase glass capillary column just described offers benefits to the routine analytical laboratory by reducing both GC analysis time and equipment "down-time". Samples containing chlorinated pesticides and polychlorinated biphenyls can be chromatographed in about half the time required for the FDA recommended mixed phase packed column. The lack of measurable column bleed means longer column life and reduced detector contamination.

Fungal Secondary Metabolism Research: Past, Present and Future

“…The simplest way to construct an rgc/ms unit is to couple a commercial gc/ms to a commercial gas flow radioactivity counter. In all constructions reported to date (37)(38)(39)(40)(41)(42)(43), the counter operates in parallel with the spectrometer. This coupling mode is accomplished by inserting a splitter into the gas stream emerging from the gc column.…”

Software package to collect and process radiogas chromatographic data

“…Ambiguities associated with this method of structure assignment can be eliminated if a mass spectrometer is married to the system. Three forms of combined radio gas chromatograph/ mass spectrometer (RGC/MS) have been described (2)(3)(4).…”

“…In the past few years, however, papers using RGC-based methods have appeared with increasing frequency (e.g. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. One reason for the relative lack of popularity of RGC-based methods may have been the embarrassingly large volume of raw data that such methods can produce if they are applied imaginatively.…”