Determination of (13C)urea enrichment by
โ
Michel Beylot; France David; Yadh Khalfallah; Sylvie Normand; Valerie Large; Hen
๐
Article
๐
1994
๐
John Wiley and Sons
๐
English
โ 354 KB
๐ 2 views
We present gas chromatographic/mass spectrometric and gas chromatographic/isotope ratio mass spectrometric assays of the 13C enrichment of plasma urea converted to its dimethylaminomethylene derivative. The limits of sensitivity of the two techniques are 0.2% and 0.02%, respectively. The techniques