Kajian Biomarka Hidrokarbon Alifatik dan Aromatik Sedimen Polaman 5 (PLM-5) Formasi Ngrayong, Cekungan Jawa Timur Utara

Atikah, Maulydhia Lullah (2021) Kajian Biomarka Hidrokarbon Alifatik dan Aromatik Sedimen Polaman 5 (PLM-5) Formasi Ngrayong, Cekungan Jawa Timur Utara. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Telah dilakukan kajian biomarka fraksi hidrokarbon alifatik dan aromatik pada sampel sedimen PLM-5 Formasi Ngrayong. Analisis biomarka dilakukan dengan tahapan ekstraksi, fraksinasi, dan identifikasi menggunakan Kromatografi Gas-Spektrometri Massa (KG-SM). Hasil identifikasi menunjukkan nilai CPI= 1,26; OEP= 1,14; Wax Index = 0,15; ACL= 28,71; Paq= 0,37 serta terbentuknya pola distribusi bimodal n-alkana mengindikasikan masukan bahan organik dari beberapa sumber yang berbeda. Ditemukan keberadaan senyawa kadalena; olean-12-ena, senyawa hopanoid, serta nilai C31αβ 22S/(22S+22R) = 0,30 menunjukkan tingkat kematangan sedimen yang rendah. Selain itu, teridentifikasinya senyawa C31 homohopana dan de-A-lupana pada sedimen PLM-5 menunjukkan kondisi lingkungan pengendapan terestrial yang bersifat oksik. Analisis biomarka yang dilakukan menunjukkan bahwa bahan organik sedimen PLM-5 Formasi Ngrayong berasal dari sumber bervariasi dengan tingkat kematangan termal yang rendah, serta terendapkan pada lingkungan yang bersifat oksik. ===================================================================================================== Study of aliphatic and aromatic biomarkers fractions has been carried out on PLM-5 sediment sample from Ngrayong Formation. Biomarker analysis was carried out by extraction, fractination, and identification using Gas Chromatography-Mass Spectrometry (GC-MS). The identification results show the value of CPI = 1.26; OEP = 1.14; Wax Index= 0.15; ACL= 28,71; Paq= 0,37 with bimodal distribution of n-alkanes compounds indicates that input of organic matter from several different sources. The presence of cadalene; olean-12-ene, hopanoid compounds, and the value of C31αβ 22S/(22S+22R) = 0,30 showed a low level of sediment maturity. In addition, the C31 homohopane and de-A-lupane compound in the PLM-5 sediment showed an oxic terrestrial environmental condition. The biomarka analysis carried out showed that organic material of the PLM-5 sediment of Ngrayong Formation was composed from various sources with low temperature levels, and was deposited in an oxic environment.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Biomarka, Hidrokarbon Alifatik dan Aromatik, Sedimen Polaman, Formasi Ngrayong, KG-SM, Biomarker, Aliphatic and Aromatic Hydrocarbon, Polaman Sediment, Ngrayong Formation, GC-MS
Subjects: Q Science > QD Chemistry > QD471 Chemical compounds - Structure and formulas
Q Science > QD Chemistry > QD63 Extraction
Divisions: Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User: Maulydhia Lullah Atikah
Date Deposited: 30 Aug 2021 04:12
Last Modified: 30 Aug 2021 04:12
URI: https://repository.its.ac.id/id/eprint/90498

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