Analysis of Leachate Copper from Sediment at a Small Abandoned Mine Site by Handy-type Liquid Electrode Plasma Atomic Emission Spectrometer

  • Yamamoto Takashi
    Department of Natural Science, Faculty of Science and Technology, Tokushima University Department of Mathematical and Material Sciences, Faculty of Integrated Arts and Sciences, Tokushima University
  • Yamashita Ayumi
    Department of Mathematical and Material Sciences, Faculty of Integrated Arts and Sciences, Tokushima University
  • Yokoyama Nozomi
    Department of Mathematical and Material Sciences, Faculty of Integrated Arts and Sciences, Tokushima University
  • Yukumoto Akira
    Department of Mathematical and Material Sciences, Faculty of Integrated Arts and Sciences, Tokushima University
  • Imai Shoji
    Department of Natural Science, Faculty of Science and Technology, Tokushima University Department of Mathematical and Material Sciences, Faculty of Integrated Arts and Sciences, Tokushima University

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Abstract

<p>Sediment, soil and drainage water were collected at an abandoned copper mine, and the leachate copper prepared with 1M HCl were qualitatively analyzed by a handy elemental analyzer based on liquid electrode plasma atomic emission spectrometry (LEP-AES). Quantitative values obtained by the handy analyzer with standard addition or conventional calibration method combining with self-internal standard method, and ones by flame atomic absorption spectrometer were compared. The analytical condition for LEP-AES, the accuracy and the precision were discussed. The elongation of interval of pulsed applied voltage enhanced intensities of emission line, but background rising for copper emission line overlapping tail of broad OH band prevent expected improvement of the limit of detection. Copper species in sediment exist as divalent basic copper sulfate confirmed by XANES/EXAFS spectra recorded by a laboratory type spectrometer.</p>

Journal

  • ISIJ International

    ISIJ International 62 (5), 854-859, 2022-05-15

    The Iron and Steel Institute of Japan

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