No abstract

SummaryMultidimensional GC (MDGC) with macrobore WCOT and PLOT columns has shown several benefits: (1) Higherflow rates, which are used, makes possible the use of common valves as the switching device; (2) very simple system configurations are possible; (3) because the columns have relatively largecapacity, the TCD can be used to measure both organic and inorganic components; (4) micropacked or open tubular columns are precolumns which provide a wide range of selectivity; (5) both precolumn and analytical columnscan beoperatedat thesame flow rate without splitting of the sample. Four rapid sample analyses: (1) Oxygenates in gasohol; (2) natural gas; (3) refinery gas; (4) hydrocarbon types in naphtha, have been developedand performed on a less complex and economical gas chromatograph.