Karakteristik Geokimia Organik Fraksi Keton Batubara Sawahlunto, Sumatera Barat

Yulfi Zetra, Amirotul Ula, Zjahra Vianita Nugraheni, R.Y Perry Burhan

Abstract


Batubara Sawahlunto, Sumatera Barat dianalisis untuk menentukan karakter geokimia organiknya. Batubara diekstraksi soxhlet dengan pelarut diklorometana:metanol (93:7). Hasil ekstrak organik difraksinasi menggunakan kromatografi kolom. Fraksi keton kemudian dianalisis menggunakan Kromatografi Gas-Spektrometri Massa (KG-SM). Analisis fraksi keton batubara Sawahlunto menunjukkan keberadaan senyawa iso dan anteiso-alkan-2-on, dan isoprenoid keton. Senyawa ini diasumsikan berasal dari rantai klorofil-α pada bakteri. Senyawa hopanon dan sikloheksil keton menunjukkan asal usul batubara dari bakteri. Peringkat kematangan batubara Sawahlunto adalah rendah dikarenakan terdapat senyawa hopanon pada batubara Sawahlunto. Proses kematangan batubara juga dapat terhambat jika komponen yang ada pada batubara berikatan dengan oksigen

Keywords


Batubara Sawahlunto, biomarka, fraksi keton

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References


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DOI: http://dx.doi.org/10.12962/j25493736.v2i1.2289

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