Title: SIMULTANEOUS-SPECTROPHOTOMETRIC DETERMINATION OF Ni,Co AND Zn BY AKC MATRIX ANALYSIS
Abstract: In the study of the color reactions of Ni(Ⅱ),Co(Ⅱ) and Zn(Ⅱ) with the color reagent 2-(6-methyl-2-benzothiazolylazo)-5-diethylaminobenzoic acid(abbreviated as MBTAEB) in hexamine buffer of pH 6.6 and in the presence of ethanol separately,highly sensitive reactions were observed giving molar absorptivities of e~(Ni)_(646)=1.49×10~5L·mol~(-1)·cm~(-1),e~(Co)_(650)=1.32×10~5L·mol~(-1)·cm~(-1) and e~(Zn)_(630)=7.7×10~4L·mol~(-1)·cm~(-1),respectively.But the absorption spectra were seriously overlapped making the direct determinations impossible.The problem of spectral-overlapping was solved by the application of AKC matrix analysis,a simple,rapid and selective method for the simultaneous determination of Nickel(Ⅱ) Cobalt(Ⅱ) and Zn(Ⅱ) ions in a same solution without the necessity of separation was made possible.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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