title: Determination of sodium with ion-selective electrodes: a new method or a new quantity?
authors.forename: W R
authors.initials: WR
authors.lastname: Külpmann
mesh_terms: D056246:Chemistry, Analytic / Q000379:methods; D004566:Electrodes; D007477:Ions; D009994:Osmolar Concentration; D012015:Reference Standards; D012964:Sodium / Q000032:analysis* / Q000097:blood
chemical_list: D007477:Ions; D012964:Sodium