Stationary source emissions -- Determination of the ratio of biomass (biogenic) and fossil-derived carbon dioxide -- Radiocarbon sampling and determination— 44 стр.
Standard Guide for Sampling and Reporting of Results for Determination of Biobased Content of Materials via Carbon Isotope Analysis (Withdrawn 2013)— 4 стр.
BS ISO 22526-2. Plastics. Carbon and environmental footprint of biobased plastics. Part 2. Material carbon footprint, amount (mass) of CO2 removed from the air and incorporated into polymer molecule— 16 стр.