The capillary-tube isotachophoretic determination of sodium(I), magnesium(II), calcium(II), strontium(II), and barium(II) using complex-forming equilibria between CyDTA and the metal ions.
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概要
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The capillary-tube isotachophoresis technique was used to determine sodium(I), magnesium(II), calcium(II), strontium(II), and barium(II). The complex-forming equilibria between CyDTA and the metal ions were used to expand the differences among their effective mobilities. The mobilities of IIa metal ions decreased with increases in the pH of the leading electrolytes and in the CyDTA concentration in the leading electrolytes. The simultaneous determination of the above five cations could be performed when the pH of the leading electrolyte was adjusted at 5.5 or above. The relative standard deviations were 1.7–2.2% for determining 15.0–25.0 nmol of the cations when the pH of the leading electrolyte was 5.70. Magnesium(II) and calcium(II) ions underwent "enforced isotachophoretic" migration.
- 公益社団法人 日本化学会の論文
著者
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Yoshida Hitoshi
Department Of Anesthesiology Hirosaki University Graduate School Of Medicine
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Taga Mitsuhiko
Department Of Chemistry Faculty Of Science Hokkaido University
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Nukatsuka Isoshi
Department Of Chemistry Faculty Of Science Hirosaki University
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