ISO 13833 pdf download Stationary source emissions — Determination of the ratio of biomass (biogenic) and fossil-derived carbon dioxide — Radiocarbon sampling and determination Scope This International Standard specifies sampling methods and analysis methods for the determination ofthe ratio of biomass- and fossi-derived carbon dioxide (CO2) in the CO, from exhaust gases of stationarysources, based on the radiocarbon (14C isotope)...