EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF TRACE AMOUNTS OF COPPER WITH α,β,γ,δ-TETRAKIS(1-METHYLPYRIDINIUM-3-YL)PORPHINE IN THE PRESENCE OF PERCHLORATE ION

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概要

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• The copper(II)-α,β,γ,δ-tetrakis(1-methylpyridinium-3-yl)porphine [T(3-MPy)P or H_2L^<4+>] complex, a tetra-positive macro-molecule, was extracted quantitatively and selectively into 2-nitropropane from the acidic solution containing a large amount of perchlorate ion in the form of the ion-association complex, CuL(ClO_4)_4, with keeping the excess of T(3-MPy)P in the aqueous phase. On this basis, a highly sensitive and selective method for the determination of copper at ppb levels has been developed. The apparent molar absorption coefficient and the sensitivity for 0.001 absorbance were 4.0 × 10^5 M^<-1> ・cm^<-1> and 0.16 ng・cm^<-2>, respectively. The interference of 17 cations and 4 anions usually encountered were examined, and found to be minimal. The method developed could be applied successfully to the determination of copper in real samples.

• 社団法人日本分析化学会の論文
• 1982-11-05

著者

• Ishii Hajime

  Chemical Research Institute Of Non-aqueous Solutions Tohoku University

• Satoh Katsuhiko

  Chemical Research Institute Of Non-aqueous Solutions Tohoku University

• Koh Hidemasa

  Chemical Research Institute of Non-Aqueous Solutions, Tohoku University

• Koh Hidemasa

  Chemical Research Institute Of Non-aqueous Solutions Tohoku University

関連論文

• EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF TRACE AMOUNTS OF COPPER WITH α,β,γ,δ-TETRAKIS(1-METHYLPYRIDINIUM-3-YL)PORPHINE IN THE PRESENCE OF PERCHLORATE ION
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