Plastics. Determination of bio-based carbon content
Plastics. Determination of bio-based carbon content
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1 Scope This Technical Specification specifies a calculation method for the determination of the bio-based carbon content in monomers, polymers and plastic materials and products, based on the 14 C content measurement. It also specifies three test methods to be used for the determination of the 14 C content from which the bio-based carbon content is calculated:
— Method A: Proportional scintillation-counter method (PSM);
— Method B: Beta-ionisation (BI);
— Method C: Accelerator mass spectrometry (AMS).
The bio-based carbon content is expressed by a fraction of sample mass, as a fraction of the total carbon content or as a fraction of the total organic carbon content. This calculation method is applicable to any polymers containing organic carbon , including biocomposites.
NOTE This Technical Specification does not provide the methodology for the calculation of the biomass content of a sample .
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