Effect of manganese on ninhydrin color development by amino acids.
D000535:Aluminum; D000596:Amino Acids / Q000032:analysis*; D002413:Cations, Divalent; D007192:Indenes; D008345:Manganese; D009555:Ninhydrin; D013053:Spectrophotometry / Q000379:methods
D000596:Amino Acids; D002413:Cations, Divalent; D007192:Indenes; D008345:Manganese; D000535:Aluminum; D009555:Ninhydrin