Cited by 341Arsenic contamination and mitigationHeavy metals in environmentCoal and Its By-products

Comparison of Antimony Behavior with that of Arsenic under Various Soil Redox Conditions

Mitsunobu, Satoshi, Harada, Teppei, Takahashi, Yoshio·2006·Environmental Science & Technology

Abstract

The oxidation states and host phases of Sb and As in soil samples of mine tailing (Ichinokawa mine, Ehime, Japan) and in laboratory soil-water systems were determined by X-ray absorption fine structure (XAFS) spectroscopy. HPLC-ICP-MS was used for speciation of Sb and As in soil water. In the Ichinokawa soil water system, Sb was present exclusively as the oxidized form, Sb(V), over a wide redox range (from Eh = 360 to -140 mV, pH 8), while As was present as a mixture of As(III) and As(V). This finding was confirmed in the laboratory experiments. These results suggest that Sb(V) is a very stable form in the environment and that Sb is oxidized at more negative Eh than As. Combining the results of Fe and Mn XAFS analyses and a positive correlation among Sb, As, and Fe abundances in the soil, the host phases of Sb and As in soil were Fe(III) hydroxide. XAFS analyses of Sb and As are also consistent with this finding. Under reducing conditions, the concentration of As in the soil water increased whereas that of Sb decreased in both the Ichinokawa and laboratory systems. This suggests that this contrasting behavior is controlled mainly by the different redox properties of Sb and As.

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Crossref · 10.1021/es060694x

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  • According to Sharma et al. and Mitsunobu et al., a similar mechanism with much greater affinity to organic matter could be expected with Sb.

    “According to Sharma et al. [16, 17] and Mitsunobu et al. [18], a similar mechanism with much greater affinity to organic matter could be expected with Sb [19].”

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Authors
Mitsunobu, S., Harada, T., & Takahashi, Y.
Affiliations
Hiroshima University (JP)
Corresponding author
Mitsunobu, Satoshi
Venue
Environmental Science & Technology
Published
2006-10-05
Volume
40
Issue
23
Pages
7270-7276
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
OpenAlex
W2014917322
Cited by
341
References
31
Citations by year
2026: 17 · 2025: 14 · 2024: 19 · 2023: 19 · 2022: 19 · 2021: 16 · 2020: 26 · 2019: 29 · 2018: 26 · 2017: 18 · 2016: 19 · 2015: 17 · 2014: 16 · 2013: 20 · 2012: 14
FWCI
6.19
Type
journal article
Language
en
Open access
closed
Locations
  • Environmental Science & Technology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Environmental Protection Agency
  • Russian Science Foundation
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
  • Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Coal and Its By-products
Keywords
antimony, arsenic, redox conditions, oxidation state, speciation, mine tailings, soil water, reducing conditions
MeSH terms
Antimony, Arsenic, Chromatography, High Pressure Liquid, Iron, Japan, Mining, Oxidation-Reduction, Soil, Mass Spectrometry, X-Rays

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