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  • Title: Rapid spectrophotometric determination of cobalt with 2,2'-dipyridyl ketoxime.
    Author: Holland WJ, Bozic J.
    Journal: Talanta; 1968 Aug; 15(8):843-7. PubMed ID: 18960370.
    Abstract:
    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 interference of 60 cations and anions shows the method to be widely applicable; it is simple, convenient and reproducible.
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