Environmental Science and Pollution Research

, Volume 25, Issue 30, pp 30180–30190 | Cite as

Concentrations and health risks of heavy metals in soils and crops around the Pingle manganese (Mn) mine area in Guangxi Province, China

  • Kehui Liu
  • Liuqun Fan
  • Yi Li
  • Zhengming Zhou
  • Chaoshu Chen
  • Bin Chen
  • Fangming YuEmail author
Research Article


Heavy metal concentrations in agricultural fields and their ecological risks are a source of extensive concern worldwide. A field survey was conducted to investigate the present situation and health risks of heavy metals (Mn, Pb, Zn, Cu, and Cd) and crops (corn, green soybean, sweet potato, persimmon, cassava, and Chinese chestnut) around the Pingle manganese (Mn) mine site in Guangxi Province, China, which was abandoned 20 years ago. The results showed that the ranges of Mn, Pb, Zn, Cu, and Cd were 2706.54–6760.16, 229.37–275.84, 160.39–215.48, 58.11–75.30, and 5.78–6.98 mg kg−1, respectively, which were approximately 15.38–38.41, 11.76–14.15, 2.12–2.85, 2.09–2.71, and 21.64–28.75 times greater than their respective background values. Most of these concentrations exceeded the national standard for soil quality (grade 2) developed by the Ministry of Environmental Protection of China (1995). Contamination assessments based on the single contamination index (Pi), Nemerow multi-factor index (Pcom), and potential ecological risk index (RI) showed that the sampled soils were severely polluted with these heavy metals, especially Pb and Cd. Similarly, the crops were enriched with Pb and Cd, with concentrations of 10.22–41.78 and 2.33–5.37 mg kg−1, respectively, which were much higher than the threshold values of the national food standards. Contamination assessments with Pi and Pcom also showed that the crops were severely polluted with Pb and Cd. The bioaccumulation factor values for Cd were highest among the heavy metals, with an average mean of 0.66 in these six crops, demonstrating that Cd readily accumulates in these crops. An assessment showed that the health risk for adults living in the mining-impacted areas was significant. Our study strongly recommends that heavy metal contamination in agricultural soils and crops grown around the Pingle Mn mining-affected areas should be treated to mitigate the health risks.


Heavy metal Soil pollution Foodstuffs Health risk Mining-affected 



We thank Dr. Jing Zhu for polishing the language in this manuscript.

Funding information

This project was supported by the National Key Research and Development Program of China (2017YFD0801500); the National Science Foundation of China (41661077); the Guangxi Science and Technology Development Project of Major Projects (Guike AA17204047-3); the Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), the Ministry of Education, China (ERESEP2017Z01); and the Key Laboratory of Karst Ecology and Environment Change (Guangxi Normal University), Guangxi Department of Education, China (YRHJ16K002).

Supplementary material

11356_2018_2997_MOESM1_ESM.docx (15 kb)
ESM 1 (DOCX 15 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Kehui Liu
    • 1
    • 2
    • 3
  • Liuqun Fan
    • 1
  • Yi Li
    • 1
    • 2
  • Zhengming Zhou
    • 2
  • Chaoshu Chen
    • 2
  • Bin Chen
    • 2
  • Fangming Yu
    • 1
    • 2
    • 4
    Email author
  1. 1.Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of EducationGuilinChina
  2. 2.College of Resource and EnvironmentGuangxi Normal UniversityGuilinChina
  3. 3.College of Life ScienceGuangxi Normal UniversityGuilinChina
  4. 4.Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of EducationGuilinChina

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