Trace analysis of aromatic compounds in natural samples by Shpol'skii spectroscopy
Low molecular weight aromatic compounds (acenaphthene, acenaphthalene, fluorene, phenanthrene and anthracene) were difficult to detect due to their low fluorescence quantum yield. To evaluate the accuracy of this method, we have analyzed several organic extracts (diesel particulate, air particulate). The results (imprecision less than 15%) obtained by Shpol'skii spectroscopy have been compared with values obtained by other analytical methodologies (HPLC coupled with fluorescence detection, GC coupled to mass spectrometry). Good agreement is observed among the three analytical techniques, demonstrating the reliability of Shpol'skii spectroscopy for quantitative analysis.
(Journal of research of the National Bureau of Standards. vol. 93, pp. 441--443, 24/08/1988)
LPTC, UB, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Distribution of methylperylene isomers in selected sediments
Surface and deep sediment extracts, containing perylene compounds, have been examined by High Resolution Shpol'skii Spectroscopy. The first identification of the three methylperylene isomers is reported and indicates the predominance of 2-methylperylene among the methylperylene isomer distributions at any maturation stage. Perylene itself was nevertheless always found to be the most abundant perylene compound. \textcopyright 1988.
(Geochimica et Cosmochimica Acta. vol. 52, n° 0016-7037, pp. 901--907, 24/08/1988)
LPTC, UB, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS, LPPM, UB
Relationship between rank and distribution of methylaromatic hydrocarbons for condensates of different origins
Aromatic hydrocarbon fractions from thirty gas condensates have been analysed by capillary GC and high resolution Shpol'skii spectroscopy for the determination of the relative distribution in methylphenanthrene (MP), dimethylphenanthrene (DMP) and methylpyrene (MPy) series. The measured maturity indices, MPI, DMPI and MPyI which appeared previously suitable for rocks, coals and crude oils have been tested for the recognition of rank levels of condensates. MPI and DMPI exhibit a remarkedly similar evolution which allows the differentiation of the samples analysed in these works. Such studies extend the applicability of alkylaromatic hydrocarbon ratios to the characterization of maturity level of condensates which range from immature-marginally mature to overmature samples, partially biodegraded or not. \textcopyright 1988.
(Organic Geochemistry. vol. 13, n° 0146-6380, pp. 1115--1121, 24/08/1988)
LPTC, UB, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
Identification of alkyphenanthrenes in shale oil and coal by liquid and capillary gas chromatography and high-resolution spectrofluorimetry (shpol'skii effect)
The combination of three high-performance liquid chromatographic steps performed on shale and coal extracts allows the collection of subfractions containing one to three C2-phenanthrene isomers. The identification was made by comparison with retention indices, gas chromatographic-mass spectrometric data and Shpol'skii emission spectra of the 30 reference C2-phenanthrenes that have been synthesized. \textcopyright 1987.
(Journal of Chromatography A. vol. 395, n° 0021-9673, pp. 217--228, 24/08/1987)
LPTC, UB, CNRS, EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS
De la fin du Villafranchien au début du Soltanien : exemple d'évolution des paléoenvironnements du Maroc occidental et oriental.
Les observations présentées se fondent sur un cadre chronologique raisonné du Quaternaire marocain liant les données océaniques et continentales. Elles intéressent le domaine mésétien et le domaine intra-atlasique. Elle conclut à la perduration des styles morphosédimentaires du Villafranchien au Tensiftien, puis à un accroissement de l'aridification.
(Bulletin de l'Association de géographes français, n° 0004-5322, pp. 20 pages, 24/08/1985)
ASM, UPVM, CNRS, MC, PACEA, UB, CNRS
Approches sédimentologique et géophysique des accumulations turbiditiques : l'éventail profond du Cap-Ferret (Golfe de Gascogne), la série des grès d'Annot (Alpes-de-Haute-Provence)
A l'aide de deux exemples, l'un actuel (l'éventail du Cap-Ferret), l'autre ancien (la série des Grés d'Annot) et par des méthodes d'approche complémentaires (analyse morphologique, sédirnentologique, interprétation sismique) sont caractérisés les facteurs et les processus dynamiques qui conditionnent l'édification des appareils turbiditiques. Le cadre morphostructural de la marge continentale, le climat et les variations du niveau marin déterminent le volume et la nature de l'alimentation terrigène, la dynamique des écoulements gravitaires et par conséquence les modalités de construction et d'évolution des appareils turbiditiques. L'éventail du Cap-Ferret, éloigné des sources terrigènes grossières se caractérise par l'importance des dépôts turbiditiques silto-argileux de débordement, fortement influencés par l'accélération complémentaire de Coriolis. Inversement les Grés d'Annot se mettent en place à pro* ximité des sources terrigènes grossières et forment, dans des dépressions/des remplissages en "onlap", constitués de lobes gréseux très aplatis.
(02/07/1983)
EPOC, EPHE, PSL, UB, INSU - CNRS, CNRS