TY - JOUR
T1 - Potentiometric and spectrophotometric flow-injection determinations of metal ions with use of metal ion buffers
AU - Ishibashi, Nobuhiko
AU - Imato, Toshihiko
AU - Tsukiji, Kayoko
N1 - Funding Information:
The authors thank Mrs. Y. Inoue and Miss I. Okubo for their experimental assistance.T his research is supported by Grant-in-Aid for Scientific Research from the Ministry of Education of Japan.
PY - 1986
Y1 - 1986
N2 - 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.
AB - 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.
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U2 - 10.1016/S0003-2670(00)82879-2
DO - 10.1016/S0003-2670(00)82879-2
M3 - Article
AN - SCOPUS:0343357445
SN - 0003-2670
VL - 190
SP - 185
EP - 194
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - C
ER -