Tobacco Research Institute of Chinese Academy of Agricultural Sciences/Key Laboratory of Tobacco Biology and Processing, Ministry of Agriculture, Qingdao, 266101, China.
Jiangxi Institute of Tobacco Science, Nanchang, 330025, China.
Environ Sci Pollut Res Int. 2018 Jun;25(17):16852-16863. doi: 10.1007/s11356-018-1866-9. Epub 2018 Apr 4.
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.
对江西省烟草（Nicotiana tabacum L.）田表土中的重金属（As、Cd、Cr、Cu、Hg、Ni、Pb 和 Zn）进行了分析，重金属的平均浓度分别为 3.55、0.19、25.89、14.96、0.25、10.89、27.80 和 44.00mg/kg。空间分布分析表明，研究区西北部、西南部和中东部地区的重金属浓度最高。地积累指数和污染指数表明 Cd 和 Hg 存在中度富集，这两种金属对当地农业环境构成潜在的高生态风险。健康风险评估表明，这些元素对儿童和成人没有造成较大的非致癌或致癌风险。主成分分析（PCA）和聚类分析（CA）发现，Cr 和 Ni 浓度的变化主要归因于土壤母岩，但土壤中 As、Cd、Cu 和 Hg 的变化主要归因于多年的农业耕作。然而，影响 Pb 和 Zn 的主要因素是大气沉降。
