Determination of biogenic component in liquid fuels by the 14C direct LSC method by using quenching properties of modern liquids for calibration
| Autor: | Jadranka Barešić, Nada Horvatinčić, Ines Krajcar Bronić, Andreja Sironić |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Quenching
010506 paleontology Radiation Chemistry Calibration curve business.industry Physics Fossil fuel Liquid scintillation counting Analytical chemistry Fraction (chemistry) radiocarbon 14C liquid scintillation counting biogenic component liquid fuels color quenching 010403 inorganic & nuclear chemistry 01 natural sciences 0104 chemical sciences Liquid fuel Physics::Geophysics Interdisciplinary Natural Sciences Radiation Science Scintillation counter Calibration business 0105 earth and related environmental sciences |
| Zdroj: | Radiation Physics and Chemistry |
| Popis: | The fraction of biogenic component within various types of materials that can be used as fuels for energy production and transport can be determined by measuring their 14C activity. The method is based on different 14C signatures of the biogenic and the fossil components: while the biogenic component reflects the modern atmospheric 14C activity, no 14C is present in fossil fuels. A direct measurement of the 14C content in liquid fuel by liquid scintillation counter is a simple and fast technique but has a main disadvantage: different liquid colors cause different quenching properties and affect the measurement efficiency. We propose a new evaluation technique that uses liquids of different colors to construct modern and background calibration curves. Various binary mixtures of biogenic liquids have been used to verify the relation between the count rate and the quenching parameter. Mixtures of a biogenic and a 14C-free liquid demonstrated the potential of the proposed technique for determining the biogenic fraction of a mixture. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|