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Mössbauer Spectroscopic Study on Vertical Distribution of Iron Species in Sediments from Qinghai Lake, China

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Abstract

In this study, 57Fe Mössbauer spectroscopy has been applied to sediments collected from Qinghai Lake in Qinghai Province, China, to investigate the vertical distribution of iron species. Their Mössbauer spectra consisted of four doublets ascribable to one paramagnetic high-spin Fe3+, two paramagnetic high-spin Fe2+ with different quadrupole splittings, and one diamagnetic low-spin Fe2+ that corresponds to pyrite (FeS2). The distribution of pyrite suggested climatic changes during the past nine thousand years. It was demonstrated that the iron speciation in the salt lake sediments by Mössbauer spectroscopy can be used to reconstruct the past environment.

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Authors and Affiliations

  1. Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan

    A. Kuno, G. D. Zheng, M. Matsuo & B. Takano

  2. Lanzhou Institute of Geology, Chinese Academy of Sciences, 324 West Donggang Road, Lanzhou, 730000, China

    J. A. Shi & Q. Wang

Authors
  1. A. Kuno
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  2. G. D. Zheng
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  3. M. Matsuo
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  4. B. Takano
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  5. J. A. Shi
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  6. Q. Wang
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Kuno, A., Zheng, G.D., Matsuo, M. et al. Mössbauer Spectroscopic Study on Vertical Distribution of Iron Species in Sediments from Qinghai Lake, China. Hyperfine Interactions 141, 321–326 (2002). https://doi.org/10.1023/A:1021267801328

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