Petroleum Biodegradation Effects on Polar Acidic Compounds and Correlation with Their Corresponded Hydrocarbon Fractions

Autor(es)

Angolini, Celio F. F. ^[1] ; Capilla, Ramses ^[2] ; Marsaioli, Anita J. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Inst Chem, BR-1308397 Sao Paulo - Brazil

^[2] PETROBRAS CENPES PDGEO GEOQ, Ilha Fundao, BR-21941915 Rio De Janeiro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ENERGY & FUELS; v. 29, n. 8, p. 4886-4892, AUG 2015.
• Citações Web of Science: 9

Resumo

A set of five oil samples from the same source rock, classified at different levels of biodegradation, was evaluated by high-resolution mass spectrometry (Orbitrap). O-containing acidic compounds from the acidic oil fractions were characterized by determining their molecular formulas. The effects of biodegradation were detected in all O classes and were consistent with the biodegradation of neutral compounds. Additionally, we found a slightly biodegraded sample that contained acidic compounds, biomarkers of a highly biodegraded sample. These results led us to propose a scale of biodegradation using acidic compounds, particularly those containing two oxygen atoms (carboxylic acids). (AU)

• Processo FAPESP: 10/06557-9 - Investigando mecanismos de degradação do petróleo.
• Beneficiário: Célio Fernando Figueiredo Angolini
• Modalidade de apoio: Bolsas no Brasil - Doutorado