L. B. James
1984
Citations
0
Influential Citations
7
Citations
Journal
Journal of Chromatography A
Abstract
Abstract In the reaction of ninhydrin with amino acids the presence of hydrindantin (reduced ninhydrin) is advantageous. This work compares the stability of a ninhydrin reagent which has been reduced with titanous chloride with that of a commercial preparation requiring addition of hydrindantin to the mixture. Aside from its greater stability, the advantages of the titanous chloride-containing preparation are: 1. no necessity to filter the reagent while being used in the analyzer; 2. the reagent is quicker and easier to prepare; 3. no waiting period for maturation of the reagent is required; and 4. the cost of the reagent is cheaper.