Abstract
The heavy metals (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) in the surface soils of tobacco (Nicotiana tabacum L.) fields in Jiangxi Province were analyzed, and the mean heavy metal concentrations were 3.55, 0.19, 25.89, 14.96, 0.25, 10.89, 27.80, and 44.00 mg/kg, respectively. Spatial distribution analysis showed that the highest concentrations were recorded in the north-western, south-western, and mid-eastern parts of the study area. The index of geo-accumulation and pollution index indicated modest enrichment with Cd and Hg, which were the only two metals posing a potentially high ecological risk to the local agricultural environment. The health risk assessment showed no considerable non-carcinogenic or carcinogenic risks for children and adults from these elements. The principal component analysis (PCA) and cluster analysis (CA) found that the variations in the Cr and Ni concentrations were largely on account of the soil parent rocks, but the As, Cd, Cu, and Hg variations in the soil were largely owing to agricultural practices of years. However, the main factor influencing Pb and Zn was atmospheric deposition.
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Acknowledgements
We acknowledge the financial support from the Program of Science and Technology of Jiangxi (No. 201101005), the Special Fund for Agro-scientific Research in the Public Interest (No. 201203091), and the Agricultural Science and Technology Innovation Program (ASTIP-TRIC03).
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Liu, H., Wang, H., Zhang, Y. et al. Risk assessment, spatial distribution, and source apportionment of heavy metals in Chinese surface soils from a typically tobacco cultivated area. Environ Sci Pollut Res 25, 16852–16863 (2018). https://doi.org/10.1007/s11356-018-1866-9
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DOI: https://doi.org/10.1007/s11356-018-1866-9