PENENTUAN KONSENTRASI BIOSOLAR BERDASARKAN KARBON-14 DENGAN METODE LIQUID SCINTILLATION COUNTING (LSC)
Abstrak
Biosolar is one of bio-fuels derived from biomass, especially from plants (vegetable material). Biosolar is soldon the market consisting of a mixture of a number of products produced by the blending process of biodiesel with dieselbased on certain concentrations. Biodiesel is chemically formed by the process of transesterification and esterificationtriglycerides are converted into methyl esters with the help of H2SO4 and NaOH as a catalyst. The determination ofbiosolar concentrations was based on the radiocarbon method on the specific sample activity measurements obtainedfrom the Hidex 300 SL Liquid Scintilation Counting (LSC). The result showed that the total carbon of the samplesolution was 6.0113 g / 8 mL while the specific activity value was 5.0700 DPM / gC so that the biosolar concentrationcan be determined by measuring the standard and specific activity through linear regression equation of 8.83%. Thus themethod of measuring the carbon-14 activity can be used to verify the biosolar concentrations produced by pertamina.Referensi
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