Biomarka Senyawa Beroksigen Sedimen Laut Arafura (Core MD.05-2967 Pada Kedalaman 1200 cm Dan 2400 cm)

Mazlan, Mazlan (2008) Biomarka Senyawa Beroksigen Sedimen Laut Arafura (Core MD.05-2967 Pada Kedalaman 1200 cm Dan 2400 cm). Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pengkajian senyawa biomarka pada sedimen Laut Arafura (core MD05- 2967, kedalaman sedimen 1200 cm dan 2400 cm), telah dilakukan untuk mengetahui asal usul bahan organik dan kondisi lingkungan sedimen. Sedimen diekstraksi dengan toluen, kloroform dan metanol yang kemudian difraksinasi menggunakan metode kromatografi kolom dan kromatografi lapis tipis hingga diperoleh fraksi keton dan alkohol dan setiap fraksi diidentifikasi dengan kromatografi gas-spektrometer massa (KG-SM). Fraksi keton digambarkan oleh sebaran metil dan etil keton Ci7— C29, keton tidak jenuh rantai panjang (C37 : 2), (C3g:2) dan (C39: 2), hopanon (C27) dan (C39), 4,24-dimetilkolestan-3-on. Fraksi alkohol diwakili oleh n-alkanol (C40-C260), Sa-kolestan-3B-ol (C27), 24-metil-Sakolestan-3B-ol (C2) dan 24-etil-5a-kolestan-3B-ol (C29). Profil fraksi keton dan alkohol ini memberikan informasi bahwa sedimen Laut Arafura merupakan sedimen baru,mengandung bahan organik dari organisme aguatik, bakteri, alga, tanaman darat tingkat tinggi serta lingkungan pengendapannya yang bersifat anaerob atau anoksik.
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The analysis of biomarker compounds of Arafura Sea sediments (Core MD.05-2967, depth 1200 cm and 2400 cm) has been performed in order to understand the origin of the organic matters and the environment condition of the sediment. The sediment samples were extracted using toluene, chloroform and methanol, followed by fractionation using column chromatography and thin-layer chromatography. The ketone and alcohol fractions were analysed by use of gas chromatography-mass spectrometric (GC-MS). Ketones fraction was described by the spread of methyl and ethyl ketones (C17-C20), long-chain unsaturated ketones (C372), (C3g-2) and (C392), C27 and C39 hopanon, 4,24-dimethylcholestan-3-on. While alcohol fraction was represented by n-alcohols (Ci4.0-C26.0), Sa-cholestan3B-ol, 24-methyl-Sa-cholestan-3P-ol (Cog) and 24-ethyl-5a-cholestan-3B-ol (C29). The profiles of ketones and alcohols fractions have indicated that sediments of Arafura Sea are a new sediment, which contain organic matters from aquatic organism, bacteria, algae with depositional environment of anaerob or anoxic.

Item Type:	Thesis (Masters)
Additional Information:	RTKi 551.468 6 Maz b 2008 3100008031434 (WEEDING)
Uncontrolled Keywords:	Alcohol, biomarker, ketones
Subjects:	T Technology > TC Hydraulic engineering. Ocean engineering > TC175.2 Sediment transport
Divisions:	Faculty of Mathematics and Science > Chemistry > 47101-(S2) Master Thesis
Depositing User:	Anis Wulandari
Date Deposited:	22 Oct 2026 02:18
Last Modified:	22 Oct 2026 02:18
URI:	http://repository.its.ac.id/id/eprint/145697

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