SELECTIVE SPECTROPHOTOMETRIC DETERMINATION OF COBALT(II) IN SYNTHETIC MIXTURES AND PHARMACEUTICAL FORMULATES WITH 5-[o-CARBOXYPHENYLAZO]2,4DIHYDROXYBENZOIC ACID

Two Divisions of the International Union of Pure and Applied Chemistry (IUPAC), namely Physical Chemistry (Commission 1.7 on Biophysical Chemistry formerly Steering Committee on Biophysical Chemistry) and Analytical Chemistry (Commission V. 5 on Electroanalytical Chemistry) have prepared recommendations on the definition, classification and nomenclature related to electrochemical biosensors; these recommendations could, in the future, be extended to other types of biosensors.