Recent developments in methods of testing for biobased carbon content as related to biomass-based chemicals and plastics are reviewed. Examples of biomass-based products are introduced, together with the details of certification systems for biomass-based products that are in place worldwide.
14C concentration measurements have been used to calculate biobased carbon content in products. In this paper, we introduce a number of techniques such as accelerator mass spectrometry(AMS), liquid scintillation counting(LSC), and β-ionization(BI) that are used to calculate the
14C concentration to determine biobased carbon content. The regulations governing these methods, and the sample pretreatment processes, are based on the international standards ASTM D6866-12, CEN/TS 16137, and ISO/CD 16620. It was found that AMS could measure many liquid and solid chemicals, and plastic and polymer composites, and that it is sufficiently accurate to conform for the determination of biobased content using some pretreatment methods. Furthermore, some measurement methods of the biobased carbon content and the biobased synthetic polymer(plastic) content of a number of samples are shown.
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