State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, 71 Beijing East Road, Nanjing 210008, Jiangsu Province, China.
Environ Pollut. 2009 Aug-Sep;157(8-9):2542-9. doi: 10.1016/j.envpol.2009.03.002. Epub 2009 Apr 3.
Soil pollution with potentially toxic elements (PTEs) resulting from rapid industrial development has caused major concerns. Selected PTEs and their accumulation and distribution in soils and rice (Oryza sativa) collected from Changshu, east China, were analyzed to evaluate the potential health risk to the local population. The soils were primarily contaminated with Hg, followed by Cu, Cd, Pb, and Zn. The concentrations of Pb, Hg, and Cd of 46, 32, and 1 rice samples exceeded their national maximum allowable levels in foods, respectively. Spatial distributions of total Cr, Cu, Pb, Zn, and Cd in soils shared similar geographical trends. The risk assessment of PTEs through rice consumption suggests that the concentrations of Cu, Pb, and Cd in some rice samples exceed their reference oral dose for adults and children. In general, there was no target hazard quotient value of any individual element that was greater than 1, but hazard index values for adults and children were 1.726 and 1.523, respectively.
由于快速工业化导致的土壤中潜在有毒元素（PTEs）污染引起了人们的极大关注。本研究采集了来自中国东部常熟的土壤和水稻（Oryza sativa）样本，分析了选定的 PTEs 及其在土壤和水稻中的积累和分布情况，以评估当地居民面临的潜在健康风险。结果表明，土壤主要受到 Hg 的污染，其次是 Cu、Cd、Pb 和 Zn。46 个、32 个和 1 个水稻样本中的 Pb、Hg 和 Cd 浓度分别超过了国家食品中最大允许限量标准。土壤中总 Cr、Cu、Pb、Zn 和 Cd 的空间分布具有相似的地理趋势。通过食用水稻对 PTEs 的风险评估表明，一些水稻样本中的 Cu、Pb 和 Cd 浓度超过了成人和儿童的参考口服剂量。总体而言，没有任何单个元素的目标危害系数值大于 1，但成人和儿童的危害指数值分别为 1.726 和 1.523。
