Health & Environmental Research Online (HERO)


Print Feedback Export to File
1070482 
Journal Article 
Heavy metals of the Tibetan top soils: Level, source, spatial distribution, temporal variation and risk assessment 
Sheng, J; Wang, X; Gong, P; Tian, L; Yao, T 
In Press 
Yes 
Environmental Science and Pollution Research
ISSN: 0944-1344
EISSN: 1614-7499 
19 
3362-3370 
English 
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. 
Trace element; Heavy metal; Soil; Tibetan Plateau; Multivariate statistics; Risk assessment 
IRIS
• Arsenic Hazard ID
     1. Initial Lit Search
          PubMed
          WOS
          ToxNet
          WOS
          Considered New
     2. Lit Search Updates through Oct 2015
          WOS
          Considered
     4. Considered through Oct 2015
     6. Cluster Filter through Oct 2015
     7. Other Studies through Oct 2015
          Exposure Assessment
• Arsenic (Inorganic)
     1. Literature
          PubMed
          Toxline, TSCATS, & DART
          Web of Science
          Lit search updates through Oct 2015
     3. Hazard ID Screening
          Other potentially supporting studies
• Methylmercury
     ADME Search: Jan 1990 - Nov 2018
          Results with mercury
               WoS