本技术规范基于14C含量测定规定了产品中生物基碳含量测定方法。 它还规定了用于确定计算生物基碳含量的14C含量的三种测试方法: 方法A:液体闪烁计数法（LSC）; - 方法B:β-电离（BI）; - 方法C:加速器质谱（AMS）。 生物基碳含量以样品质量的分数表示，作为总碳含量的一部分或总有机碳含量的分数。 该计算方法适用于任何含有机碳的产品，包括生物复合材料。 注意本技术规范不提供计算样品生物量含量的方法

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: Liquid scintillation-counter method (LSC); - Method B: Beta-ionization (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.