Method of determining cyclic carbon content in sample and...

G - Physics – 01 – N

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G01N 33/00 (2006.01) G01N 21/35 (2006.01) G01N 24/08 (2006.01) G01N 27/62 (2006.01) G01N 33/22 (2006.01)

Patent

CA 2620669

A method of determining the cyclic carbon content in a sample which comprises burning the sample to determine the total 14C amount in the sample from the amount of the carbon dioxide generated, burning the sample to check whether the sample has left ash or not, treating the sample with an acid when ash has been left to thereby determine the 14C amount from the amount of the carbon dioxide generated, correcting the total 14C amount in the sample with the 14C amount determined through the acid treatment, and calculating the cyclic carbon content in the sample from the corrected total 14C amount in the sample.

La présente invention concerne un procédé pour déterminer la teneur en carbone cyclique dans un échantillon, lequel comprend la combustion de l'échantillon pour déterminer la quantité totale de 14C dans l'échantillon à partir de la quantité de dioxyde de carbone produite, la combustion de l'échantillon pour vérifier si l'échantillon laisse ou non des cendres, le traitement de l'échantillon avec un acide lorsqu~il a des cendres de façon à déterminer de ce fait la quantité de 14C à partir de la quantité de dioxyde de carbone produite, la correction de la quantité totale de 14C dans l'échantillon, la quantité de 14C étant déterminée par le traitement avec un acide, et le calcul de la teneur en carbone cyclique dans l'échantillon à partir de la quantité totale de 14C corrigée dans l'échantillon.

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