Determination of -Amino Acid Nitrogen in Urine
- 1 August 1957
- journal article
- research article
- Published by Frontiers Media SA in Experimental Biology and Medicine
- Vol. 95 (4), 808-813
- https://doi.org/10.3181/00379727-95-23370
Abstract
Summary A modification of the photometric copper phosphate method for determination of α-amino acid nitrogen in urine has been presented. A comparison of results obtained in urines by the copper phosphate, naphthoquinone and gasometric-ninhydrin methods indicates that the specificity of the copper phosphate and naphthoquinone methods is materially improved by preliminary isolation of the amino acids on an ion exchange column.Keywords
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