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Description
Colorimetric determination of nickel
In ammonia solution nickel ions react with diacetyldioxime after oxidation with bromine to form a reddish-brown dye. Insoluble nickel compounds (e. g. nickel cyanide, nickel carbonate) and the nickel cyano complexes are not determined.
Nickel can be present in industrial waste water. It occurs as the divalent ion or as a nickel complex.
