Trace metal pollution in topsoil surrounding the Xiangtan manganese mine area (South-Central China): source identification, spatial distribution and assessment of potential ecological risks

Feng Jiang, Bozhi Ren, Andrew S. Hursthouse, Yingying Zhou

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Abstract

In this study, we identified heavy metal sources, investigated their spatial distribution in topsoil and assessed their potential ecological risk in the area surrounding a typical manganese mining area in Xiangtan, Hunan Province, China. The concentrations of Mn, Cu, Pb, Zn, Cd, Ni, Cr and Hg in the topsoil of the study area were measured. With the exception of Cr and Hg, it was found that other heavy metals exceeded the corresponding soil background values of hunan province. The spatial variation of heavy metals was visualized by GIS, and the results show that heavy metals in topsoil are mainly enriched around mines and smelters. Accompanied with spatial distribution, trend analysis, Pearson's correlation and principle component analysis, two groups of heavy metals were identified: Mn, Cu, Pb, Zn, Cd and Ni can be attributed to industrial and mining activities, whereas Cr and Hg are of natural origin. The results also revealed that the prevailing wind direction, erosion of mine tailings and rain water runoff may play significant roles in heavy metal diffusion and transfer. In addition, the environmental risk of heavy metal pollution was evaluated using geoaccumulation indexes and potential ecological risk indexes (PERI) applied to the study area. The comprehensive potential ecological risk index of heavy metals is at a high risk level in the manganese mine area. The comprehensive potential ecological risk index of heavy metals is mostly at a moderate risk level around the manganese mine area. Further, 79.01% of the potential ecological risk was from Cd in the study area.
Original languageEnglish
Article number2412
Number of pages16
JournalInternational Journal of Environmental Research and Public Health
Volume15
Issue number11
DOIs
Publication statusPublished - 31 Oct 2018

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Manganese mines
Manganese
Heavy Metals
Spatial distribution
topsoil
Heavy metals
trace metal
manganese
China
Pollution
Metals
heavy metal
spatial distribution
pollution
geoaccumulation index
Trace metals
Rain
trend analysis
Tailings
Runoff

Keywords

  • manganese mining
  • topsoil
  • trace metals
  • source identification
  • spatial distribution
  • potential ecological risk assessment

Cite this

@article{6f977d44f18e4b3e982bd483e2794360,
title = "Trace metal pollution in topsoil surrounding the Xiangtan manganese mine area (South-Central China): source identification, spatial distribution and assessment of potential ecological risks",
abstract = "In this study, we identified heavy metal sources, investigated their spatial distribution in topsoil and assessed their potential ecological risk in the area surrounding a typical manganese mining area in Xiangtan, Hunan Province, China. The concentrations of Mn, Cu, Pb, Zn, Cd, Ni, Cr and Hg in the topsoil of the study area were measured. With the exception of Cr and Hg, it was found that other heavy metals exceeded the corresponding soil background values of hunan province. The spatial variation of heavy metals was visualized by GIS, and the results show that heavy metals in topsoil are mainly enriched around mines and smelters. Accompanied with spatial distribution, trend analysis, Pearson's correlation and principle component analysis, two groups of heavy metals were identified: Mn, Cu, Pb, Zn, Cd and Ni can be attributed to industrial and mining activities, whereas Cr and Hg are of natural origin. The results also revealed that the prevailing wind direction, erosion of mine tailings and rain water runoff may play significant roles in heavy metal diffusion and transfer. In addition, the environmental risk of heavy metal pollution was evaluated using geoaccumulation indexes and potential ecological risk indexes (PERI) applied to the study area. The comprehensive potential ecological risk index of heavy metals is at a high risk level in the manganese mine area. The comprehensive potential ecological risk index of heavy metals is mostly at a moderate risk level around the manganese mine area. Further, 79.01{\%} of the potential ecological risk was from Cd in the study area.",
keywords = "manganese mining, topsoil, trace metals, source identification, spatial distribution, potential ecological risk assessment",
author = "Feng Jiang and Bozhi Ren and Hursthouse, {Andrew S.} and Yingying Zhou",
year = "2018",
month = "10",
day = "31",
doi = "10.3390/ijerph15112412",
language = "English",
volume = "15",
journal = "International Journal of Environmental Research and Public Health",
issn = "1661-7827",
publisher = "Multidisciplinary Digital Publishing Institute",
number = "11",

}

TY - JOUR

T1 - Trace metal pollution in topsoil surrounding the Xiangtan manganese mine area (South-Central China)

T2 - source identification, spatial distribution and assessment of potential ecological risks

AU - Jiang, Feng

AU - Ren, Bozhi

AU - Hursthouse, Andrew S.

AU - Zhou, Yingying

PY - 2018/10/31

Y1 - 2018/10/31

N2 - In this study, we identified heavy metal sources, investigated their spatial distribution in topsoil and assessed their potential ecological risk in the area surrounding a typical manganese mining area in Xiangtan, Hunan Province, China. The concentrations of Mn, Cu, Pb, Zn, Cd, Ni, Cr and Hg in the topsoil of the study area were measured. With the exception of Cr and Hg, it was found that other heavy metals exceeded the corresponding soil background values of hunan province. The spatial variation of heavy metals was visualized by GIS, and the results show that heavy metals in topsoil are mainly enriched around mines and smelters. Accompanied with spatial distribution, trend analysis, Pearson's correlation and principle component analysis, two groups of heavy metals were identified: Mn, Cu, Pb, Zn, Cd and Ni can be attributed to industrial and mining activities, whereas Cr and Hg are of natural origin. The results also revealed that the prevailing wind direction, erosion of mine tailings and rain water runoff may play significant roles in heavy metal diffusion and transfer. In addition, the environmental risk of heavy metal pollution was evaluated using geoaccumulation indexes and potential ecological risk indexes (PERI) applied to the study area. The comprehensive potential ecological risk index of heavy metals is at a high risk level in the manganese mine area. The comprehensive potential ecological risk index of heavy metals is mostly at a moderate risk level around the manganese mine area. Further, 79.01% of the potential ecological risk was from Cd in the study area.

AB - In this study, we identified heavy metal sources, investigated their spatial distribution in topsoil and assessed their potential ecological risk in the area surrounding a typical manganese mining area in Xiangtan, Hunan Province, China. The concentrations of Mn, Cu, Pb, Zn, Cd, Ni, Cr and Hg in the topsoil of the study area were measured. With the exception of Cr and Hg, it was found that other heavy metals exceeded the corresponding soil background values of hunan province. The spatial variation of heavy metals was visualized by GIS, and the results show that heavy metals in topsoil are mainly enriched around mines and smelters. Accompanied with spatial distribution, trend analysis, Pearson's correlation and principle component analysis, two groups of heavy metals were identified: Mn, Cu, Pb, Zn, Cd and Ni can be attributed to industrial and mining activities, whereas Cr and Hg are of natural origin. The results also revealed that the prevailing wind direction, erosion of mine tailings and rain water runoff may play significant roles in heavy metal diffusion and transfer. In addition, the environmental risk of heavy metal pollution was evaluated using geoaccumulation indexes and potential ecological risk indexes (PERI) applied to the study area. The comprehensive potential ecological risk index of heavy metals is at a high risk level in the manganese mine area. The comprehensive potential ecological risk index of heavy metals is mostly at a moderate risk level around the manganese mine area. Further, 79.01% of the potential ecological risk was from Cd in the study area.

KW - manganese mining

KW - topsoil

KW - trace metals

KW - source identification

KW - spatial distribution

KW - potential ecological risk assessment

U2 - 10.3390/ijerph15112412

DO - 10.3390/ijerph15112412

M3 - Article

VL - 15

JO - International Journal of Environmental Research and Public Health

JF - International Journal of Environmental Research and Public Health

SN - 1661-7827

IS - 11

M1 - 2412

ER -