Potentiometric and spectrophotometric flow-injection determinations of metal ions with use of metal ion buffers

Nobuhiko Ishibashi, Toshihiko Imato, Kayoko Tsukiji

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Potentiometric and spectrophotometric flow-injection determinations of metal ions, based on metal ion buffers, are described. A copper(II) ion-selective electrode and copper(II) ion buffers containing nitrilotriacetic acid (NTA) or ethylenebis(oxyethylenedinitrilo)tetraacetic acid (EGTA) are used for determination of ca. 10 -3 M transition metal ions or of calcium in the presence of magnesium. Spectrophotometric determination of transition metal ions is achieved by using a zinc ion buffer solution containing NTA and xylenol orange as indicator. Zinc concentrations up to 2 M can be determined by using large dispersion in the manifold. The factors influencing the sensitivity of the proposed methods are discussed.

Original languageEnglish
Pages (from-to)185-194
Number of pages10
JournalAnalytica Chimica Acta
Volume190
Issue numberC
DOIs
Publication statusPublished - Jan 1 1986

Fingerprint

Metal ions
Buffers
Metals
Nitrilotriacetic Acid
Ions
Injections
ion
metal
Transition metals
Zinc
Copper
transition element
Egtazic Acid
acid
Magnesium
Ion-Selective Electrodes
zinc
copper
Calcium
Acids

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

Cite this

Potentiometric and spectrophotometric flow-injection determinations of metal ions with use of metal ion buffers. / Ishibashi, Nobuhiko; Imato, Toshihiko; Tsukiji, Kayoko.

In: Analytica Chimica Acta, Vol. 190, No. C, 01.01.1986, p. 185-194.

Research output: Contribution to journalArticle

Ishibashi, Nobuhiko ; Imato, Toshihiko ; Tsukiji, Kayoko. / Potentiometric and spectrophotometric flow-injection determinations of metal ions with use of metal ion buffers. In: Analytica Chimica Acta. 1986 ; Vol. 190, No. C. pp. 185-194.
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