Environmental Science and Pollution Research

, Volume 19, Issue 8, pp 3362–3370

Heavy metals of the Tibetan top soils

Level, source, spatial distribution, temporal variation and risk assessment

Authors

  • Jiujiang Sheng
    • Key laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau ResearchChinese Academy of Sciences
    • Key laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau ResearchChinese Academy of Sciences
  • Ping Gong
    • Key laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau ResearchChinese Academy of Sciences
  • Lide Tian
    • Key laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau ResearchChinese Academy of Sciences
  • Tandong Yao
    • Key laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau ResearchChinese Academy of Sciences
Research Article

DOI: 10.1007/s11356-012-0857-5

Cite this article as:
Sheng, J., Wang, X., Gong, P. et al. Environ Sci Pollut Res (2012) 19: 3362. doi:10.1007/s11356-012-0857-5

Abstract

Objective

Due to its high elevation, rare human activities and proximity to south Asia where industries are highly developed, it is required to investigate the fragile environment of the Tibetan Plateau. We are aiming to obtain the concentration level, source, spatial distribution, temporal variation and potential environmental risk of Tibetan soils.

Methods

A total of 128 surf ace soil samples were collected and analyzed f or V, Cr, Mn, Co, Ni, Cu, Zn, As, Cd and Pb, and an additional 111 samples were analyzed f or Hg and total organic carbon. Concentration comparisons coupled with multivariate statistics were used to analysis the sources of elements of soils. We also carried out Risk assessment on the soils.

Results

Concentrations of Hg, Cr, Ni, Cd and Pb are slightly higher than those of the late 1970s. Concentrations of Cr and Ni are higher than averaged world background values. Tibetan soils present a high natural As concentration level.

Discussion

Anthropogenic sources may partly contribute to the elevated Hg, Cd and Pb concentrations. Cr and Ni are mainly originated from soil parent materials. Soil elements in Anduo and Qamdo regions may threaten the health of local people.

Conclusion

Heavy metal elements of Tibetan Plateau are mainly from the natural source. Arsenic present a high background level. Soil elements in Anduo and Qamdo regions may threaten the health of local people, which should be of concern to scientists and the government.

Keywords

Trace element Heavy metal Soil Tibetan Plateau Multivariate statistics Risk assessment

Supplementary material

11356_2012_857_MOESM1_ESM.xls (89 kb)
ESM 1 (XLS 89 kb)
11356_2012_857_MOESM2_ESM.doc (306 kb)
ESM 2 (DOC 305 kb)

Copyright information

© Springer-Verlag 2012