11. A chief component of that air would be radioactive carbon 14 , which is released as the waste decays. 12. In the United States, there is already an equivalent carbon 14 method under the standard method ASTM D6866. 13. Archaeologists are able to accurately date once-living materials by measuring the amount of radioactive carbon 14 in them. 14. Carbon 14 dating of the almonds points to a date of 288 BC ( plus or minus 62 years ).15. A technical review ( CEN / TR 15591 : 2007 ) outlining the carbon 14 method was published in 2007. 16. Carbon 14 dating can determine with precision the biomass fraction of waste, and also determine the biomass calorific value.17. Carbon 14 dating of the ship's planks gives a date of 389 BC ( plus or minus 44 years ).18. A preview of the song " Carbon 14 " off this new album were played at the 2006 NEARFest to garner publicity. 19. Carbon 14 -labeled pesticides do enable mass balances, but investigations with radioactively tagged substrates cannot be conducted in the field.20. Several containers with between five and six kilograms of Iodine 131 and Carbon 14 were found near an old railway in downtown Sofia,
