GAS-CHROMATOGRAPHY OF TITANS ATMOSPHERE .5. DETERMINATION OF PERMANENT GASES IN THE PRESENCE OF HYDROCARBONS AND NITRILES WITH A MOLECULAR-SIEVE MICROPACKED COLUMN AND OPTIMIZATION OF THE GC PARAMETERS USING ADOEHLERT EXPERIMENTAL-DESIGN
E. Devanssay et al., GAS-CHROMATOGRAPHY OF TITANS ATMOSPHERE .5. DETERMINATION OF PERMANENT GASES IN THE PRESENCE OF HYDROCARBONS AND NITRILES WITH A MOLECULAR-SIEVE MICROPACKED COLUMN AND OPTIMIZATION OF THE GC PARAMETERS USING ADOEHLERT EXPERIMENTAL-DESIGN, Journal of chromatography, 688(1-2), 1994, pp. 161-170
An alternative for the GC determination of permanent gases in Titan's
atmosphere, given the severe constraints of space instrumentation, is
the use of a 100-120-mesh molecular sieve 5A micropacked column. Becau
se of its high efficiency, small pressure drop and short analysis time
, such a column is fully compatible with the experimental constraints
of the Cassini-Huygens mission. In order to optimize the GC conditions
associated with this column, a methodological approach was supported
by a Doehlert experimental design. With such optimized conditions, the
column provides a rapid separation of the selected products under iso
thermal conditions, with about 900 theoretical plates per metre at 70
degrees C for most of the solutes studied.