Microdosage des acides α‐aminés et de peptides simples par l'intermédiaire de leurs sels complexes de cuivre

For the quantitative serial determination of α‐amino acids and oligopeptides based on the formation of their cupric complexes a cation exchange resin (Dowex 50) containing cupric and phosphoric ions probably as basic cupric phosphate is described as a specific cupric ion donor.