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Medicinal drugs have been determined by indirect atomic absorption spectrophotometry. There are a few medicinal drugs which contain metals and almost all drugs do not possess any metals. Some of them provide either metal chelating groups or metal complexing groups, and various attempts have been made. For the MIBK extraction of Co anthranilate, the ternary complex formation with bathophenanthroline has been introduced. When they have no complexing groups, ion association complexes have been prepared. Chlorphenylamine maleate is extractable with MIBK in the presence of Zincon-Cu chelate. Decomposition reactions, and redox reactions have also been employed effectively in the indirect atomic absorption spectrophotometry.

Atomic absorption spectrophotometry of medicinal drugs by metal complex formation.