Extractive photometric determination of cobalt with acid monochrome green S.
Cobalt forms with Acid Monochrome Green S a complex which can be extracted quantitatively into butanol from 1.6M sodium chloride medium at pH 9.5-11.5. The molar absorptivity of the complex is 3.2 x 10(4) at 625 mmu. The method has been used to determine cobalt in gallium metal.
Bagreev
V V
VV
Vernadsky Institute of Geochemistry and Analytical Chemistry Academy of Sciences, Moscow, USSR.
Zolotov
Y A
YA