Patent ID: 7939336

Claim:
A method of verifying the origin of carbon in a synthetic carbonate composition derived from a combustion of a fossil fuel source comprising: i) evaluating the source of the carbon in the synthetic carbonate composition derived from the combustion of a fossil fuel source by (a) determining a relative carbon isotope composition δ 13 C value for the composition; (b) comparing the value determined in step (a) with a second δ 13 C value of a known source; and (c) verifying that the composition comprises carbon derived from a fossil fuel source based on the result of the comparison of step (b) and confirming that the δ 13 C value for the composition is more like to δ 13 C values derived from plant-derived sources than δ 13 C values derived from atmospheric carbon dioxide or non-planted-derived marine sources of carbon; ii) measuring the carbon content of the composition; and iii) quantifying an amount of carbon dioxide that is sequestered in the composition.