Infrared Spectrophotometric Determination of 13C Enrichment

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Abstract
A study has been made of the feasibility of using the v3 band of 13C2 as a basis for measurement of the extent of isotope enrichment in breath tests Correlation and least-squares treatments were used Considering the constraints of a small computer, the correlation approach is the more satisfactory The results indicate that a method that is based on a single measurement at 170 Torr, with a standard curve for quantitation, will give results that are adequate, considering the natural variation that occurs Assuming the use of a beam condenser, the amount of sample required is less than that normally taken for this application