Etude physico-chimique des résidus de pyrolyse de la sporopollénine

Details Etude physico-chimique des résidus de pyrolyse de la sporopollénine Etude physico-chimique des résidus de pyrolyse de la sporopollénine

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976gecoa..40..143l&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 40, Issue 2, pp.143-148

Physics

Scientific paper

Two parameters are chosen to characterize the pyrolysis residues of sporopollenin: the first one is the ratio, where d 1600 and d 1700 are the optical densities of the absorption bands at 1600 and 1700 cm -1 , respectively; the second one is the paramagnetic susceptibility p measured by E.P.R. Those two quantities increase rapidly above 300°C, which confirms previous results that the sporopollenin structure undergoes important modifications at this temperature. A striking similarity is observed between the properties of sporopollenin residues and those of natural kerogens.

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