Rapid spectrophotometric determination of cobalt with 2,2'-dipyridyl ketoxime.


A rapid spectrophotometric method for the determination of low levels of cobalt(III) with 2,2 -dipyridyl ketoxime is proposed. A 3:1 water-soluble complex which is easily extractable into chloroform and has an absorption maximum at 388 mmicro forms instantaneously. Beer's law is obeyed and the molar absorptivity is 19.5 x 10(3). An investigation of the… (More)


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