INSTM and Chemistry for Technologies Laboratory, University of Brescia, via Branze, 38, 25123 Brescia, Italy.
Environ Sci Pollut Res Int. 2013 Jul;20(7):5067-75. doi: 10.1007/s11356-013-1473-8. Epub 2013 Jan 22.
Metal contamination was investigated in soils of the Vallecamonica, an area in the northern part of the Brescia province (Italy), where ferroalloy industries were active for a century until 2001. The extent in which emissions from ferroalloy plants affected metal concentration in soils is not known in this area. In this study, the geogenic and/or anthropogenic origin of metals in soils were estimated. A modified Community Bureau of Reference sequential chemical extraction method followed by inductively coupled plasma optical emission spectroscopy (ICP-OES) analyses were employed to evaluate the potential bioavailability of Al, Cd, Mn, Fe, Cr, Zn, and Pb in soils. Principal component analysis (PCA) was used to assess the relationships among metal sources in soil samples from different locations. This approach allowed distinguishing of different loadings and mobility of metals in soils collected in different areas. Results showed high concentrations and readily extractability of Mn in the Vallecamonica soils, which may suggest potential bioavailability for organisms and may create an environmental risk and potential health risk of human exposure.
对瓦莱卡梅奥纳（意大利布雷西亚省北部的一个地区）的土壤进行了金属污染调查，在 2001 年之前，该地区的铁合金工业已经活跃了一个世纪。在该地区，尚不清楚铁合金工厂的排放物对土壤中金属浓度的影响程度。在这项研究中，估计了土壤中金属的地球成因和/或人为成因。采用改进的社区参考局顺序化学提取方法，随后进行电感耦合等离子体发射光谱法（ICP-OES）分析，以评估土壤中 Al、Cd、Mn、Fe、Cr、Zn 和 Pb 的潜在生物可利用性。主成分分析（PCA）用于评估不同地点土壤样本中金属来源之间的关系。这种方法可以区分在不同地区采集的土壤中金属的不同负载和迁移能力。结果表明，瓦莱卡梅奥纳土壤中的锰含量高且易提取，这可能表明对生物具有潜在的生物可利用性，并可能对环境和人类暴露造成潜在的健康风险。
