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The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan Zetra, Yulfi; Kusuma, Hendra Siswanto; Riandra, Fina; Sosrowidjojo, Imam B.; Burhan, R.Y. Perry
Indonesian Journal on Geoscience Vol 5, No 2 (2018)
Publisher : Geological Agency

DOI: 10.17014/ijog.5.2.107-116The 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.

The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan Zetra, Yulfi; Kusuma, Hendra Siswanto; Riandra, Fina; Sosrowidjojo, Imam B.; Burhan, R.Y. Perry
Indonesian Journal on Geoscience Vol 5, No 2 (2018)
Publisher : Geological Agency

DOI: 10.17014/ijog.5.2.107-116The 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.

The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan Zetra, Yulfi; Kusuma, Hendra Siswanto; Riandra, Fina; Sosrowidjojo, Imam B.; Burhan, R.Y. Perry
Indonesian Journal on Geoscience Vol 5, No 2 (2018)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17014/ijog.5.2.107-116

DOI: 10.17014/ijog.5.2.107-116The 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.

Biomarking Study of Aromatic Hydrocarbon Fraction Crude Oil Tarakan, North Kalimantan Rafwan Year Perry Burhan; Abduh Muharram Chairacita; Yulfi Zetra; Endah Mutiara
Jurnal Teknik ITS Vol 8, No 2 (2019)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

The study of the aromatics of aromatic hydrocarbons from Tarakan crude oil, North Kalimantan, has been carried out through the analysis of Gas Chromatography-Mass Spectroscopy (GC-MS) analysis. The biomarkers identified showed the presence of naphthalene groups, phenanthrene and pentacyclic triterpenoids where the pentacyclic triterpenoid showed the highest abundance. The presence of 3,3,7-trimethyl-1,2,3,4-tetrahydrochrysene biomarkers; 1,2,9-trimethyl-1,2,3,4-tetrahydropicene; 2,7-dimethyl-1,2- (isopropylpenteno) -1,2,3,4-tetrahydrochrysene and dinorursa-1,3,5 (10), 13 (18) -tetraene as indicators of plants Angiosperms and chrysene indicate input bacteria. The existence of 1,3,7 + 2,6,9 + 2,7,9-TMP biomarkers; 3-MC and 2-MC indicate mature oil samples. The presence of DMP, TMP and chrysene biomarkers indicates terrestrial and marine depositional environments.

Organic Geochemistry Characteristics of Aliphatic Hydrocarbon Fraction of Crude Oil from Tarakan Basin, North Borneo, Indonesia Yulfi Zetra; Maulida Fitriyyah; Rafwan Year Perry Burhan; Zjahra Vianita Nugraheni
Jurnal Teknik ITS Vol 8, No 2 (2019)
Publisher : Direktorat Riset dan Pengabdian Masyarakat (DRPM), ITS

The study of organic geochemistry of crude oil from Pamusian field, Tarakan Basin, North Borneo has been done. The oil is fractionated by column chromatography and identified using gas chromatography-mass spectrometer (GC-MS). The presence of long chain n-alkanes, cadinane, 4β(H)-eudesmane, and 18α (H)-oleanane indicates organic matter derived from resin dammar Angiospermae family Dipterocarpaeae. It is also reported that there are drimane together with homodrimane and hopane as an indicator of bacterial input. The LHCPI value of 2.03 also indicates a high input of photosynthetic bacteria. Pr/Ph ratio of 3.76 and a drimane/homodrimane ratio of 1.058 indicating the oxic depositional environment of the sample. Isomer analysis of 18α(H)-oleanane and 17α(H),21β(H)-hopane provides information that the crude oil from Tarakan Basin is mature.

Karakteristik Geokimia Organik Fraksi Hidrokarbon Alifatik Batubara Sawahlunto, Cekungan Ombilin, Sumatra Barat Januar Kholik; Yulfi Zetra
Jurnal Sains dan Seni ITS Vol 7, No 2 (2018)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

Batubara Sawahlunto, Sumatra Barat dianalisis untuk menentukan karakter geokimia organiknya melalui metode ekstraksi dan identifikasi sehingga dihasilkan fraksi hidrokarbon alifatik. Fraksi hidrokarbon alifatik kemudian dianalisis dan diidentifikasi strukturnya menggunakan Kromatografi Gas – Spektrometri Massa (KG-SM). Identifikasi struktur menunjukan adanya distribusi n-alkana dan isoprenoid. Senyawa n-alkana terdistribusi unimodal mulai n-C15 sampai n-C33 dengan dominasi rantai panjang (>C20) yang mengindikasikan senyawa organik batubara berasal dari tumbuhan tingkat tinggi. Rasio pristan terhadap fitana > 3 menunjukan lingkungan pengendapan yang oksik. Kedua sampel memiliki nilai LHCPI < 1 menunjukan bahan organic berasal dari tumbuhan tingkat tinggi. Kedua sampel memiliki nilai CPI > 1 menunjukan batubara Sawahlunto belum matang. Hasil analisis kalori dengan Bomb Kalorimeter terhadap sampel batubara yang dianalisis menunjukkan sampel tergolong ke dalam peringkat sub-bituminous.

Analisis Biomarka Minyak Mentah Sumur Tua Blok Cepu, Formasi Wonocolo, Jawa Timur Miranti Widi Puspita Ayu; Perry Burhan; Yulfi Zetra
Jurnal Sains dan Seni ITS Vol 9, No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373520.v9i2.56936

Analisis biomarka fraksi hidrokarbon alifatik dan aromatik pada sampel minyak mentah Blok Cepu, formasi Wonocolo, Jawa Timur dilakukan untuk mengetahui implikasi geokimia organik guna membantu upaya reaktivasi sumur tua didaerah tersebut. Analisis biomarka dilakukan melalui metode fraksinasi serta identifikasi struktur menggunakan instrumen Kromatografi Gas - Spektrometri Massa (KG-SM), sehingga dapat diketahui tingkat kematangan termal pada sampel minyak Blok Cepu. Didapatkan nilai CPI sebesar 1,68, LHCPI sebesar 0,88, rasio Ts/Tm sebesar 0,55 serta ditemukannya senyawa 17β(H),21α(H)-hopana, dan 17α(H),21β(H)-30-homohopana konfigurasi (22S) dengan kelimpahan tinggi menunjukan kematangan termal yang rendah dari sampel minyak mentah Blok Cepu yang dianalisis. Keberadaan senyawa 1,6-DMN dan kadalena dengan kelimpahan tinggi serta ditemukannya senyawa seterana dengan ikatan tak jenuh juga menunjukan kematangan termal yang rendah pada sampel minyak Blok Cepu.

Karakter Geokimia Organik Minyak Mentah Sumur Tua Blok Cepu, Formasi Wonocolo, Jawa Timur Awalia Wardatil Firdaus; Yulfi Zetra; R. Y. Perry Burhan
Jurnal Sains dan Seni ITS Vol 9, No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373520.v9i2.57419

Telah dilakukan kajian geokimia organik melalui analisa biomarka terhadap sampel minyak pada sumur tua Blok Cepu, Formasi Wonocolo, Jawa Timur untuk mengetahui lingkungan pengendapan kuno minyak tersebut. Analisa biomarka dilakukan dengan metode ekstraksi, fraksinasi, dan identifikasi struktur menggunakan instrumen Kromatografi Gas-Spektrometer Massa (KG-SM). Hasil identifikasi biomarka menunjukkan adanya biomarka pristana (Pr) dan fitana (Ph) dengan rasio Pr/Ph 3.25 mengindikasikan lingkungan pengendapan oksidatif. Keberadaan senyawa 1,2,7- dan 1,2,5-TMN, senyawa 4,4,8,8,9-pentametil decalin dan 4,4,8,9,9-pentametil decalin, biomarka 4-metildibenzofuran, serta biomarka triterpenoid pentasiklik dengan rasio Ts/Tm+Ts sebesar 0.34 juga mendukung indikator lingkungan pengendapan minyak mentah sumur tua Blok Cepu, Formasi Wonocolo yang bersifat oksidatif. Analisa biomarka yang telah dilakukan menunjukkan sampel minyak Blok Cepu, Formasi Wonocolo memiliki asal usul lingkungan pengendapan oksik.

Biomarka sebagai Indikator Sumber Asal Usul Senyawa Organik Minyak Mentah Blok Cepu, Formasi Wonocolo, Bojonegoro, Jawa Timur Aufa Fadhliah; Yulfi Zetra; Agus Wahyudi; R.Y. Perry Burhan
Jurnal Sains dan Seni ITS Vol 9, No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM), ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23373520.v9i2.58293

Telah dilakukan kajian geokimia organik pada sampel minyak mentah Blok Cepu untuk mengetahui sumber asal-usul senyawa organiknya sebagai data pendukung proses reaktivasi sumur tua kawasan tersebut. Kajian geokimia organik dilakukan melalui analisa biomarka dengan metode ekstraksi, fraksinasi dan identifikasi struktur menggunakan instrumen Kromatografi Gas-Spektrometer Massa (KG-SM). Hasil identifikasi menunjukkan adanya distribusi bimodal pada n-alkana yang mengindikasikan senyawa organik pada sampel minyak Cepu tidak hanya berasal dari satu sumber. Hal tersebut didukung dengan keberadaan kelompok biomarka seskuiterpana (4β(H)-eudesmana, drimana), sterana (trans-trans-trans-bikadinana, 5α(H)-22-kolestena), hopanoid, derivat naftalena (1,2,5-TMN; 1,2,5,6-TeMN; 1,3,6,7-TeMN) serta aromatik triterpenoid pentasiklik sebagai indikator senyawa organik pada minyak Cepu berasal dari tumbuhan tingkat tinggi, bakteri, alga dan fitoplankton.

The Oxygenated Biomarker as an Indicator of Origin and Maturity of Miocene Brown Coal, Sangatta Coal Mines, East Kalimantan Yulfi Zetra; Hendra Siswanto Kusuma; Fina Riandra; Imam B. Sosrowidjojo; R.Y. Perry Burhan
Indonesian Journal on Geoscience Vol 5, No 2 (2018)
Publisher : Geological Agency

DOI: 10.17014/ijog.5.2.107-116The 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.

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