Química Nova
| Autor: | Alves,Jeferson Cavalcante, Araujo,Rennan Geovanny Oliveira, Souza,Eliane Soares de, Soares,Sarah Adriana Rocha, Cerqueira,José Roberto, Garcia,Karina Santos, Queiroz,Antonio Fernando de Souza, Vale,Maria Goreti Rodrigues, Borges,Aline Rocha |
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| Jazyk: | angličtina |
| Předmět: | |
| Zdroj: | Química Nova, Vol 41, Iss 4, Pp 417-428 Repositório Institucional da UFBA Universidade Federal da Bahia (UFBA) instacron:UFBA Química Nova v.41 n.4 2018 Química Nova Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| ISSN: | 1678-7064 0100-4042 |
| Popis: | Submitted by Gisele Mara Hadlich (gisele@ufba.br) on 2019-04-22T19:19:31Z No. of bitstreams: 1 0100-4042-qn-41-04-0417.pdf: 4698248 bytes, checksum: 07ecac7f610fabc51828c00f652818c6 (MD5) Approved for entry into archive by Jessica Alves (alves.jessica@ufba.br) on 2019-05-20T14:02:32Z (GMT) No. of bitstreams: 1 0100-4042-qn-41-04-0417.pdf: 4698248 bytes, checksum: 07ecac7f610fabc51828c00f652818c6 (MD5) Made available in DSpace on 2019-05-20T14:02:32Z (GMT). No. of bitstreams: 1 0100-4042-qn-41-04-0417.pdf: 4698248 bytes, checksum: 07ecac7f610fabc51828c00f652818c6 (MD5) Previous issue date: 2018-02-01 Eight petroleum samples from Potiguar Basin were submitted for determination of saturated biomarkers by gas chromatography (fingerprint), liquid chromatography (saturates, aromatics, resins and asphaltenes), gas chromatography-mass spectrometry (GC-MS), nickel and vanadium by high resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GF AAS). The geochemical parameters provided information on type of depositional paleoenvironment in which organic matter that gave rise to each oil sample and level of thermal maturation reached by generating rocks that make up the Potiguar Basin were deposited. The relationships between the stable isotopes of carbon (δ13C) and between Ni and V concentrations of each petroleum sample were also evaluated. The evaluations separated for oil samples into two distinct groups. Group 1 formed by samples P1, P2, P5 and P8, with characteristics of generating rock that was deposited in a marine hypersaline environment. Group 2 composed of samples P3, P4, P6 and P7 with freshwater lacustrine depositional paleoenvironment,which were elucidated through the geochemical parameters studied. The hierarchical cluster analysis was presented as promising chemometric tool for characterization of petroleum samples in the according to their origin of the generating rock by ratio parameters of hopane/sterane , tetracyclic polyiprenoids/diastereomers and diastereos R+S/cholestane R+S. |
| Databáze: | OpenAIRE |
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