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Adv Space Res

Title:		Simulated cometary matter as a test for enantiomer separating chromatography for use on comet 46P/Wirtanen
Author(s):		Meierhenrich UJ; Thiemann WH; Munoz Caro GM; Schutte WA; Greenberg JM;
Address:		"Dept. Phys. Chemistry, University of Bremen, Leobenerstrasse, D-28359 Bremen, Germany"
Journal Title:		Adv Space Res
Year:		2001
Volume:		27
Issue:		2
Page Number:		329 - 334
DOI:		10.1016/s0273-1177(01)00065-5
ISSN/ISBN:		0273-1177 (Print) 0273-1177 (Linking)
Abstract:		"The Cometary Sampling and Composition Experiment on board of European Space Agency's cornerstone mission ROSETTA is designed to identify organic molecules in cometary matter in situ by a combined pyrolysis gas chromatographic and mass spectrometric technique. Its capillary columns coated with chiral stationary phases received considerable attention, because they are designed for separations of non-complex enantiomers to allow the determination of enantiomeric ratios of cometary chiral organic compounds and consequently to provide information about the origin of molecular parity violation in biomolecules. To get gas chromatographic access to organic compounds on the comet, where macromolecules and complex organic polymers of low volatility are expected to make up the main organic ingredients, the combination of two injection techniques will be applied. The pyrolysis technique performed by heating cometary samples stepwise to defined temperatures in specific ovens resulting in thermochemolysis reactions of polymers and a chemical derivatization technique, in which the reagent dimethylformamide dimethylacetal assists pyrolysis derivatization reactions in producing methyl esters of polar monomers. The combination of the reagent assisted pyrolysis gas chromatographic technique with enantiomer separating chromatography was tested with laboratory-produced simulated cometary matter"
Keywords:		"Ammonia/chemistry Carbon Dioxide/chemistry Carbon Isotopes Carbon Monoxide/chemistry Evaluation Studies as Topic Evolution, Chemical Exobiology Extraterrestrial Environment Gas Chromatography-Mass Spectrometry/*instrumentation Hot Temperature Ice/*analysi;"
Notes:		"MedlineMeierhenrich, U J Thiemann, W H Munoz Caro, G M Schutte, W A Greenberg, J M eng Research Support, Non-U.S. Gov't England 2001/10/20 Adv Space Res. 2001; 27(2):329-34. doi: 10.1016/s0273-1177(01)00065-5"