title: Quantitative studies of the avidity of naturally occurring substances for trace metals. 4. A potentiometric method for highly insoluble complexes, and its application to complexes of adenine anion.
mesh_terms: D000225:Adenine / Q000737:chemistry*; D000838:Anions; D003300:Copper / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D011199:Potentiometry
chemical_list: D000838:Anions; D003300:Copper; D009532:Nickel; D000225:Adenine
keywords: ADENINE/chemistry; COPPER/chemistry; NICKEL/chemistry