it was found that the most proper mobile phase consisted of ethanol : ammonia gas : distilled water in a 1:1:1 ratio and a 0.3 per cent alcohol solution of ninhydrin with a following heating in a kiln at 105 degrees c in the course of 3 to 5 min , with a use of aluminium plaques ( merck production ) .
C0002607
ammonia
C0017110
gas