Optimization of the direct LSC method for determination of biogenic component in liquids by applying 14C

Determination of fraction biogenic component in liquid fuels by a direct radiocarbon measurement scintillation counter (direct-LSC method) has been validated participation the international intercomparison exercise. All results for samples with standard quench parameter SQP(E) value above ≈ 650 were accepted. Highly quenched sample used edible oil was diluted 14C-free petroleum ether to optimize region applicability. It established that quantitative obtained values 700, while between 700 and 600 only qualitative fbio can be taken.