The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan
<p><span>DOI: 10.17014/ijog.5.2.107-116</span></p><p>The Middle to Late Miocene brown coal extracted from Inul area, Sangatta coal mines, East Kalimantan, was studied to recognize the distribution of ketone and acid biomarkers. Samples were extracted using soxhlet metho...
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| Format: | Article |
| Language: | English |
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Geological Agency
2018-04-01
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| Series: | Indonesian Journal on Geoscience |
| Online Access: | https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/289 |
| _version_ | 1828377188728045568 |
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| author | Yulfi Zetra Hendra Siswanto Kusuma Fina Riandra Imam B. Sosrowidjojo R.Y. Perry Burhan |
| author_facet | Yulfi Zetra Hendra Siswanto Kusuma Fina Riandra Imam B. Sosrowidjojo R.Y. Perry Burhan |
| author_sort | Yulfi Zetra |
| collection | DOAJ |
| description | <p><span>DOI: 10.17014/ijog.5.2.107-116</span></p><p>The Middle to Late Miocene brown coal extracted from Inul area, Sangatta coal mines, East Kalimantan, was studied to recognize the distribution of ketone and acid biomarkers. Samples were extracted using soxhlet method and separated by column chromatography and thin layer chromatography. Acetylation of acid fractions by BF3/MeOH produced an ester compound which is an acid derivative. The distributions of fatty acid methyl esters were analyzed with gas chromatography-mass spectrometry (GC-MS). The distributions of ketones included compounds in n-alkan-2-one, amyrin-derived ketone, and friedeline derivatives as well as olean-13(18)-en-3-one with oleanane skeleton. Distributions of fatty acids included compounds in the range from n-methylhexadecanoate (n-C16) to n-methyltriacontanoate (n-C30) with dominating compounds from n-methylhexadecanoate (n-C16) to n-methyldococanoate (n-C22). The most obvious feature is predominance of compounds with even-over-odd-carbon-atom-number in a molecule, which come from vascular plant fatty acids. The distributions of these biomarker compounds are used as an indicator of higher plant and oxic depositional environment, as well as the involvement of bacteria in diagenesis stage which indicates immature coals.</p> |
| first_indexed | 2024-04-14T08:09:54Z |
| format | Article |
| id | doaj.art-70ca73331f7c4f8092028919fab29265 |
| institution | Directory Open Access Journal |
| issn | 2355-9314 2355-9306 |
| language | English |
| last_indexed | 2024-04-14T08:09:54Z |
| publishDate | 2018-04-01 |
| publisher | Geological Agency |
| record_format | Article |
| series | Indonesian Journal on Geoscience |
| spelling | doaj.art-70ca73331f7c4f8092028919fab292652022-12-22T02:04:34ZengGeological AgencyIndonesian Journal on Geoscience2355-93142355-93062018-04-015210711610.17014/ijog.5.2.107-116241The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East KalimantanYulfi Zetra0Hendra Siswanto Kusuma1Fina Riandra2Imam B. Sosrowidjojo3R.Y. Perry Burhan4Laboratory of Molecular Geochemistry, Chemistry Departement Institut Teknologi Sepuluh Nopember, Kampus ITS Keputih, SurabayaLaboratory of Molecular Geochemistry, Chemistry Departement Institut Teknologi Sepuluh Nopember, Kampus ITS Keputih, SurabayaResearch Institute of Petroleum Exploration and Development “LEMIGAS”, JakartaResearch Institute of Petroleum Exploration and Development “LEMIGAS”, JakartaInstitut Teknologi Sepuluh Nopember<p><span>DOI: 10.17014/ijog.5.2.107-116</span></p><p>The Middle to Late Miocene brown coal extracted from Inul area, Sangatta coal mines, East Kalimantan, was studied to recognize the distribution of ketone and acid biomarkers. Samples were extracted using soxhlet method and separated by column chromatography and thin layer chromatography. Acetylation of acid fractions by BF3/MeOH produced an ester compound which is an acid derivative. The distributions of fatty acid methyl esters were analyzed with gas chromatography-mass spectrometry (GC-MS). The distributions of ketones included compounds in n-alkan-2-one, amyrin-derived ketone, and friedeline derivatives as well as olean-13(18)-en-3-one with oleanane skeleton. Distributions of fatty acids included compounds in the range from n-methylhexadecanoate (n-C16) to n-methyltriacontanoate (n-C30) with dominating compounds from n-methylhexadecanoate (n-C16) to n-methyldococanoate (n-C22). The most obvious feature is predominance of compounds with even-over-odd-carbon-atom-number in a molecule, which come from vascular plant fatty acids. The distributions of these biomarker compounds are used as an indicator of higher plant and oxic depositional environment, as well as the involvement of bacteria in diagenesis stage which indicates immature coals.</p>https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/289 |
| spellingShingle | Yulfi Zetra Hendra Siswanto Kusuma Fina Riandra Imam B. Sosrowidjojo R.Y. Perry Burhan The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan Indonesian Journal on Geoscience |
| title | The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan |
| title_full | The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan |
| title_fullStr | The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan |
| title_full_unstemmed | The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan |
| title_short | The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan |
| title_sort | oxygenated biomarker as an indicator of origin and maturity of miocene brown coal sangatta coal mines east kalimantan |
| url | https://ijog.geologi.esdm.go.id/index.php/IJOG/article/view/289 |
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