Spectrophotometric determination of nickel with 2-thenoyltrifluoroacetone using synergistic extraction

Synergistic effect of isoquinoline (B) on the extraction of nickel with 2-thenoyltrifluoroacetone (TTA) was found to be attributable to the formation of an adduct, Ni(TTA)2(B)2. Using the extractability of this adduct into organic phase, a spectrophotometric method for determination of trace amount...

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Published inBUNSEKI KAGAKU Vol. 17; no. 2; pp. 183 - 187
Main Authors AKAIWA, Hideo, KAWAMOTO, Hiroshi, HARA, Minoru
Format Journal Article
LanguageJapanese
Published The Japan Society for Analytical Chemistry 05.02.1968
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Summary:Synergistic effect of isoquinoline (B) on the extraction of nickel with 2-thenoyltrifluoroacetone (TTA) was found to be attributable to the formation of an adduct, Ni(TTA)2(B)2. Using the extractability of this adduct into organic phase, a spectrophotometric method for determination of trace amount of nickel (II) was established. The pH of a smaple solution containing up to 70 μg of Ni was adjusted to about 7. After the addition of isoquinoline and TTA benzene solution, nickel was extracted into the organic phase and the absorbance was measured at 390 mμ. The sensitivity of this method was 0.026 μg/cm2. Although a preliminary separation of Cu (II), Co (II), Mn (II) was needed, each 500 μg of Fe (III), Cr (III), Th (IV) did not interfere.
ISSN:0525-1931
DOI:10.2116/bunsekikagaku.17.183