Organic geochemistry characteristic of aliphatic hydrocarbon fraction of Sawahlunto coal, Ombilin Basin, West Sumatra

Zetra, Yulfi; Kholik, Januar; Burhan, R. Y. Perry; Wahyudi, Agus Budi; Nugraheni, Zjahra Vianita; Putri, Endah Mutiara Marhaeni

doi:10.1063/1.5082423

Cited by 3 publications

(2 citation statements)

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“…Malten obtained was fractionated by a silica gel column chromatography GF254 with a solvent gradient method to separate the aliphatic, aromatic and polar hydrocarbon fractions. The aliphatic hydrocarbon fraction was obtained with n-hexane solvent, aromatic hydrocarbon fraction with dichloromethane and polar fraction with methanol [20,21,22]. The aromatic hydrocarbon fraction is desulfurized using Cu powder, then it is identified by the gas chromatography -mass spectroscopy (GC-MS) method.…”

Section: Methodsmentioning

confidence: 99%

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Paleoenvironmental and Maturity Indicator of Cepu Block Oil, Wonocolo Formation, East Java-Indonesia

2020

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Biomarkers identification of aromatic hydrocarbon fraction of Cepu oil samples was carried out to determine the ancient depositional environment, the source of origin and indicators of the maturity of the old well of the Cepu Block oil, Wonocolo Formation, East Java Indonesia. Biomarkers was identified through the Gas Chromatography-Mass Spectroscopy (GC-MS) method. The distribution of aromatic hydrocarbon biomarkers indicates the presence of naphthalene compounds and their derivatives, sesquiterpenoids, diterpenoids and heterocyclic aromatic groups. The presence of identified biomarkers indicates the source of the oil organic compound coming from higher plants Angiosperms. The presence of methyl phenanthrene and aromatic heterocyclic biomarkers such as dibenzothiophene and dibenzofuran , as well as fluorene shows that Cepu Block oil was deposited not only in the terrestrial environment, but also lacustrine and marin under oxidic precipitation conditions. The presence of methyl phenanthrene with MPI value of 0.86 and isocadalene abundance higher than cadalene indicates moderate to high maturity of the Cepu Block oil analyzed. Keywords: Cepu Block oil, aromatic hydrocarbon, biomarker, paleoenvironment, GC-MS analysis.

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Section: Methodsmentioning

confidence: 99%

“…Column temperature was 70 °C at first (held for 1 minute), raised to 100 °C (rate of increase was 10 °C/minute), then raised again to 180 °C (rate of increase was 1 °C/minute). Final raised temperature was 300 °C approximately (rate of increase for 30 minutes [22].…”

Section: Methodsmentioning

confidence: 99%