ISO 13833 pdf download Stationary source emissions — Determination of the ratio of biomass (biogenic) and fossil-derived carbon dioxide — Radiocarbon sampling and determination
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) method. The lower limit of application is a biogenic tototal COz fraction of 0,02. The working range is a biogenic to total COz fraction of 0,02 to 1,0.
The following referenced documents are indispensable for the application of this document, For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument(including any amendments) applies.
ISO 7934, Stationary source emissions — Determination of the mass concentration of sulfur dioxide -Hydrogen peroxide/barium perchlorate/Thorin method
ISO 10396, Stationary source emissions – Sampling for the automated determination of gas emissionconcentrations for permanently-installed monitoring systems
SO 15713, Stationary source emissions — Sampling and determination ofgaseous fluoride content
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1biogenicproduced in natural processes by living organisms but not fossilized or derived from fossil resources3.2biomassmaterial ofbiological origin excluding material embedded in geological formation ortransformed to fossil
fraction of atoms of a particular isotope of an element
amount of carbon bound in an organic material
percentage modern carbon
normalized and standardized value for the amount of the 14C isotope in a sample, calculated relative to thestandardized and normalized 14C isotope amount of oxalic acid standard reference material, SRM 4990c1)
Note 1 to entry: In 2009, the value of 100 % bio-based carbon was set at 105 pmC.
proportionalsamplingflow proportional sampling
technique for obtaining a sample from flowing stack gas in which the wet or dry sample flow rate isdirectly proportional to the mass flow rate, volume flow rate or velocity in the stack
radioactive isotope ofthe element carbon, 14C, having 8 neutrons, 6 protons, and 6 electrons
Note 1 to entry: Ofthe total carbon on Earth, 1 x 10-10 % mass fraction is 14C.It decays exponentially with a halflife of5 730 years and as such it is not measurable in fossil materials derived from petroleum, coal, natural gas orany other source older than about 50 000 vears.
quantity of material, representative of a larger quantity for which the property is to be determined
sample preparationall the actions taken to obtain representative analvses. samples or test portions from the original sample
quantity of material drawn from the test sample (or from the laboratory sample if both are the sameand on which the test or observation is actually carried out
electron or positron which has been emitted by an atomic nucleus or neutron in a nuclear transformation[ISO 921:1997, definition 81]