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Ion Chromatographic Study of Sulfate-Triethylenetetramine Complexes in Aqueous Solution

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Abstract

The selective effect of triethylenetetramine (Trien) on the retention behavior of sulfate in ion chromatography was studied. When Trien was added to an eluant as a counter ion, retention of sulfate was selectively shortened, while retention times of monovalent anions did not change. The cause for this phenomenon was the complexation of sulfate and Trien in an eluant. The stability constants of divalent sulfate-trivalent Trien and -tetravalent Trien complexes were estimated to be 936 and 4213 (40°C), respectively. As a practical application of this phenomenon, weakly retained monovalent species can be very well separated from both water dip and other species without prolonging the interval of injections.

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Authors and Affiliations

  1. Analytical Applications Department, Shimadzu Corporation, Nishinokyo-kuwabara-cho, Kyoto, 604, Japan

    Masayuki Nishimura & Morimasa Hayashi

  2. Faculty of Pharmaceutical Sciences, Kanazawa University, Takara-machi, Kanazawa, 920, Japan

    Kazuichi Hayakawa & Motoichi Miyazaki

Authors
  1. Masayuki Nishimura
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  2. Morimasa Hayashi
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  3. Kazuichi Hayakawa
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  4. Motoichi Miyazaki
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Nishimura, M., Hayashi, M., Hayakawa, K. et al. Ion Chromatographic Study of Sulfate-Triethylenetetramine Complexes in Aqueous Solution. ANAL. SCI. 10, 321–324 (1994). https://doi.org/10.2116/analsci.10.321

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  • DOI: https://doi.org/10.2116/analsci.10.321

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