The geochemistry of Mukah and Balingan coals : a natural product approach
Balingan and Mukah coals were investigated for their organic geochemical contents. The coal samples were extracted sequentially on Soxhlet apparatus using dichloromethane and methanol. The crude extracts were subjected to fractionation on silica gel column chromatography into aliphatic hydrocarbo...
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| Format: | Final Year Project Report / IMRAD |
| Language: | English |
| Published: |
Universiti Malaysia Sarawak, UNIMAS
2012
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| Online Access: | http://ir.unimas.my/id/eprint/6281/ http://ir.unimas.my/id/eprint/6281/1/Farahnasya%20Nabilah%20ft.pdf |
| Summary: | Balingan and Mukah coals were investigated for their organic geochemical contents. The
coal samples were extracted sequentially on Soxhlet apparatus using dichloromethane and
methanol. The crude extracts were subjected to fractionation on silica gel column
chromatography into aliphatic hydrocarbon, aromatic hydrocarbon and polar organic
compound fractions. These fractions were then analyzed on gas chromatography-flame
ionization detector (GC-FID) and gas chromatography-mass spectroscopy (GC-MS).
Analysis on aliphatic hydrocarbon fractions showed that both coals have been deposited
under reducing or anoxic environment. Organic matters in Balingan and Mukah coals are
thought to be originated from inland swamp and derived from marine environment.
Polycyclic aromatic hydrocarbons (PAHs) data showed that both Balingan and Mukah coals
are thermally immature. Several organic compounds have been successfully isolated and the
significant organic compounds identified were grouped in fatty acid or ester compounds.
Biomarker indices derived from distribution of hydrocarbons indicated that both coals were
originated mainly from terrigenous higher plant with low thermal maturity. |
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