Pemanfaatan Gula dari Indonesia untuk Standar Modern Karbon pada Pentarikhan Radiokarbon  

Oleh:

Siregar, Darwin Alijasa

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Jurnal Standardisasi: Majalah Ilmiah Standardisasi vol. 10 no. 2 (2008), page 77-85.
Topik: Sugar; Radiocarbon; Laboratory Procedure

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: SS48 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Radiocarbon dating method is applied to date samples which are not exceeding 50.000 years in age (Quaternary). Dateable samples in this method include charred wood, matters contents of clay, coral, limestone (e.g. stalagmite), and molluscs. In the laboratory procedure, a modern carbon standard called the Reference Material 4990C Oxalic Acid is required as a correlation factor for the active carbon that was contained within the samples during their life time. At present, the reference carbon standard is produced by the international company called the National Bureau Standard (NBS). To obtain the material, it is procedurally difficult as well as costly. To overcome this problem therefore, an effort has been made to find a local reference material as a substitute. This work is carried out as an in house research of the Radiocarbon Laboratory of the Geological Survey Institute (GSI). This research work is conducted in order to reduce the dependence of the laboratory upon the NBS, considering that both internal and external requests for radiocarbon dating services tend to be increasing from time to time. For the abovementioned purpose, a long run research work is underway for which a locally produced sugar cane has been selected as the basic raw material. It is hoped that the result will meet our requirement of carbon standard reference material in the routine dating activities of the radiocarbon Labotaroy of the Geological Survey Institute.

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