14 C isotope as biomarker 2 25.01.13 14 C isotope in the whole - - PowerPoint PPT Presentation

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CEN TC411 WG3

Frits Bakker

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14C isotope as biomarker

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CEN/TC 335 WG5 CHN ,total carbon CEN/TC249 WG17 Biobased carbon CEN/TC343 WG3 Biogenic Carbon content in SRF ISO/TC 146 SC1

14CO2 in stackgas

Suess effect

14C isotope in the whole carbon cycle

CEN/TC 411 Biobased products

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KBBPPS

WP3, scope and ruggedness tests New horizontal standard, based as much as possible on existing protocols

Scope biobased Carbon content

Scope This Technical Specification specifies a method for the determination of the bio- based carbon content in products, based on the 14C content measurement. It also specifies three test methods to be used for the determination of the

14C 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 product 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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Questions for stakeholders

• Ruggedness test, we need difficult samples
• Which raw products?
• Which end products?
• Solids, liquids, gases?
• Concentration ranges?
• Demands on performance characteristics?