Etude physico-chimique des résidus de pyrolyse de la sporopollénine |
| |
| Authors: | Pierre Libert André Marchand Marie-France Achard |
| |
| Institution: | Centre de Recherches Paul Pascal, Domaine Universitaire, 33405-Talence, France |
| |
| Abstract: | Two parameters are chosen to characterize the pyrolysis residues of sporopollenin: the first one is the ratio, where d1600 and d1700 are the optical densities of the absorption bands at 1600 and 1700 cm?1, respectively; the second one is the paramagnetic susceptibility χp 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. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
