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Highly Selective Detection of Trace Copper(II) Using Bathocuproinesulfonate by Flow-Injection Electrospray Ionization Mass Spectrometry

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Abstract

Trace Cu2+ was detected with high selectivity using specific complexation with bathocuproinesulfonate (BCS) through flow-injection electrospray ionization mass spectrometry (FI-ESI-MS), which separates Cu2+ from coexisting metal ions by forming a Cu–BCS complex with a high mass number. Here, only [CuI(BCS)2]3− was obtained with a high ion count. Its calibration curve was linear from 1.0 × 10−8 to 1.0 × 10−5 M. This method was applied to determine the Cu-complexing capacities of humic acid solution and river water samples by adding traces of Cu2+.

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Authors and Affiliations

  1. Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, 376-8515, Kiryu, Gunma, Japan

    Masanobu Mori, Keiko Misawa & Hideyuki Itabashi

Authors
  1. Masanobu Mori
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  2. Keiko Misawa
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  3. Hideyuki Itabashi
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Correspondence to Masanobu Mori.

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Mori, M., Misawa, K. & Itabashi, H. Highly Selective Detection of Trace Copper(II) Using Bathocuproinesulfonate by Flow-Injection Electrospray Ionization Mass Spectrometry. ANAL. SCI. 30, 1173–1176 (2014). https://doi.org/10.2116/analsci.30.1173

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  • DOI: https://doi.org/10.2116/analsci.30.1173

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