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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/29584

Title: Correlações geoquímicas entre amostras de petróleo da Bacia Potiguar e definição de suas possíveis rochas geradoras
Other Titles: Química Nova
Authors: 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
Keywords: petroleum;biomarkers;nickel;vanadium;carbon isotopes
Issue Date: 1-Feb-2018
Abstract: 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.
URI: http://repositorio.ufba.br/ri/handle/ri/29584
ISSN: 1678-7064
Appears in Collections:Artigos Publicados em Periódicos (POSPETRO)

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