Pollution characteristics of Sb, As, Hg, Pb, Cd and Zn in soils from different zones of Xikuangshan antimony mine

Saijun Zhou, Andrew Hursthouse, Tengshu Chen

Research output: Contribution to journalArticle

1 Citation (Scopus)
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Abstract

Major sources of pollution during the antimony (Sb) mining and processing are mining waste rock, smelting waste, tailings dam, and underground tunnel wastewater. The aim of the present study was to assess magnitude of pollution from Sb mine by taking four types of samples: soil in the mining waste rock zone, soil in the smelting zone, soil in tailings zone, and soil in underground tunnel wastewater zone. Sixty soil samples from the four zones were taken for experimental work, and the contents and morphological characteristics of the six potentially toxic elements (PTEs) such as Sb, As, Hg, Pb, Cd, and Zn in the soil samples were measured by using a hydride generation atomic fluorescence spectrometer (AFS-9700). The results show that the soil of the mine area is seriously polluted. The average contents of Sb, As, Hg, Pb, Cd, and Zn in the soil reach 1267.20 mg·kg -1, 94.44 mg·kg -1, 1.46 mg·kg -1, 184.19 mg·kg -1, 8.54 mg·kg -1, and 1054.11 mg·kg -1, respectively. There exists good correlation between the PTEs in the soil, with Sb strongly positively correlated with As, Hg, Pb, and Zn. The intensity of pollution is highest in the antimony-smelting zone, where the potential ecological risk index is over 15,000, followed by the tailings zone and mining waste rock zone, with the underground tunnel wastewater zone being the lowest. Using sequential chemical extraction, the elements are associated with the residual fraction, followed by organic-sulfide fraction, and smaller portions in the Fe-Mn oxide, carbonate, and exchangeable fractions. There are great differences in the speciation content of different elements in different sampling zones. The study implicates that Sb-smelting zone is the potential source of PTEs and maximum metals are associated with residual phase, out of which significant portion is associated with mobile fraction or phase.

Original languageEnglish
Article number2754385
Pages (from-to)2754385
Number of pages9
JournalJournal of Analytical Methods in Chemistry
Volume2019
DOIs
Publication statusPublished - 8 Sep 2019

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Antimony mines
antimony
pollution
soils
Pollution
Soils
smelting
Smelting
soil
Poisons
Tailings
tunnels
Tunnels
Wastewater
Rocks
rocks
tunnel
wastewater
tailings
Antimony

Keywords

  • Xikuangshan
  • Potentially toxic elements (PTEs)
  • soil contamination
  • mining activity
  • sequential chemical extraction

Cite this

@article{8fa5d9af568742f4abad204fa385ac23,
title = "Pollution characteristics of Sb, As, Hg, Pb, Cd and Zn in soils from different zones of Xikuangshan antimony mine",
abstract = "Major sources of pollution during the antimony (Sb) mining and processing are mining waste rock, smelting waste, tailings dam, and underground tunnel wastewater. The aim of the present study was to assess magnitude of pollution from Sb mine by taking four types of samples: soil in the mining waste rock zone, soil in the smelting zone, soil in tailings zone, and soil in underground tunnel wastewater zone. Sixty soil samples from the four zones were taken for experimental work, and the contents and morphological characteristics of the six potentially toxic elements (PTEs) such as Sb, As, Hg, Pb, Cd, and Zn in the soil samples were measured by using a hydride generation atomic fluorescence spectrometer (AFS-9700). The results show that the soil of the mine area is seriously polluted. The average contents of Sb, As, Hg, Pb, Cd, and Zn in the soil reach 1267.20 mg·kg -1, 94.44 mg·kg -1, 1.46 mg·kg -1, 184.19 mg·kg -1, 8.54 mg·kg -1, and 1054.11 mg·kg -1, respectively. There exists good correlation between the PTEs in the soil, with Sb strongly positively correlated with As, Hg, Pb, and Zn. The intensity of pollution is highest in the antimony-smelting zone, where the potential ecological risk index is over 15,000, followed by the tailings zone and mining waste rock zone, with the underground tunnel wastewater zone being the lowest. Using sequential chemical extraction, the elements are associated with the residual fraction, followed by organic-sulfide fraction, and smaller portions in the Fe-Mn oxide, carbonate, and exchangeable fractions. There are great differences in the speciation content of different elements in different sampling zones. The study implicates that Sb-smelting zone is the potential source of PTEs and maximum metals are associated with residual phase, out of which significant portion is associated with mobile fraction or phase.",
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Pollution characteristics of Sb, As, Hg, Pb, Cd and Zn in soils from different zones of Xikuangshan antimony mine. / Zhou, Saijun; Hursthouse, Andrew; Chen, Tengshu.

In: Journal of Analytical Methods in Chemistry, Vol. 2019, 2754385, 08.09.2019, p. 2754385.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Pollution characteristics of Sb, As, Hg, Pb, Cd and Zn in soils from different zones of Xikuangshan antimony mine

AU - Zhou, Saijun

AU - Hursthouse, Andrew

AU - Chen, Tengshu

PY - 2019/9/8

Y1 - 2019/9/8

N2 - Major sources of pollution during the antimony (Sb) mining and processing are mining waste rock, smelting waste, tailings dam, and underground tunnel wastewater. The aim of the present study was to assess magnitude of pollution from Sb mine by taking four types of samples: soil in the mining waste rock zone, soil in the smelting zone, soil in tailings zone, and soil in underground tunnel wastewater zone. Sixty soil samples from the four zones were taken for experimental work, and the contents and morphological characteristics of the six potentially toxic elements (PTEs) such as Sb, As, Hg, Pb, Cd, and Zn in the soil samples were measured by using a hydride generation atomic fluorescence spectrometer (AFS-9700). The results show that the soil of the mine area is seriously polluted. The average contents of Sb, As, Hg, Pb, Cd, and Zn in the soil reach 1267.20 mg·kg -1, 94.44 mg·kg -1, 1.46 mg·kg -1, 184.19 mg·kg -1, 8.54 mg·kg -1, and 1054.11 mg·kg -1, respectively. There exists good correlation between the PTEs in the soil, with Sb strongly positively correlated with As, Hg, Pb, and Zn. The intensity of pollution is highest in the antimony-smelting zone, where the potential ecological risk index is over 15,000, followed by the tailings zone and mining waste rock zone, with the underground tunnel wastewater zone being the lowest. Using sequential chemical extraction, the elements are associated with the residual fraction, followed by organic-sulfide fraction, and smaller portions in the Fe-Mn oxide, carbonate, and exchangeable fractions. There are great differences in the speciation content of different elements in different sampling zones. The study implicates that Sb-smelting zone is the potential source of PTEs and maximum metals are associated with residual phase, out of which significant portion is associated with mobile fraction or phase.

AB - Major sources of pollution during the antimony (Sb) mining and processing are mining waste rock, smelting waste, tailings dam, and underground tunnel wastewater. The aim of the present study was to assess magnitude of pollution from Sb mine by taking four types of samples: soil in the mining waste rock zone, soil in the smelting zone, soil in tailings zone, and soil in underground tunnel wastewater zone. Sixty soil samples from the four zones were taken for experimental work, and the contents and morphological characteristics of the six potentially toxic elements (PTEs) such as Sb, As, Hg, Pb, Cd, and Zn in the soil samples were measured by using a hydride generation atomic fluorescence spectrometer (AFS-9700). The results show that the soil of the mine area is seriously polluted. The average contents of Sb, As, Hg, Pb, Cd, and Zn in the soil reach 1267.20 mg·kg -1, 94.44 mg·kg -1, 1.46 mg·kg -1, 184.19 mg·kg -1, 8.54 mg·kg -1, and 1054.11 mg·kg -1, respectively. There exists good correlation between the PTEs in the soil, with Sb strongly positively correlated with As, Hg, Pb, and Zn. The intensity of pollution is highest in the antimony-smelting zone, where the potential ecological risk index is over 15,000, followed by the tailings zone and mining waste rock zone, with the underground tunnel wastewater zone being the lowest. Using sequential chemical extraction, the elements are associated with the residual fraction, followed by organic-sulfide fraction, and smaller portions in the Fe-Mn oxide, carbonate, and exchangeable fractions. There are great differences in the speciation content of different elements in different sampling zones. The study implicates that Sb-smelting zone is the potential source of PTEs and maximum metals are associated with residual phase, out of which significant portion is associated with mobile fraction or phase.

KW - Xikuangshan

KW - Potentially toxic elements (PTEs)

KW - soil contamination

KW - mining activity

KW - sequential chemical extraction

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DO - 10.1155/2019/2754385

M3 - Article

C2 - 31612093

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JO - Journal of Analytical Methods in Chemistry

JF - Journal of Analytical Methods in Chemistry

SN - 2090-8865

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