Nadal M, Schuhmacher M, Domingo J L
Laboratory of Toxicology and Environmental Health, School of Medicine, 'Rovira i Virgili' University, San Lorenzo 21, Reus 43201, Spain.
Sci Total Environ. 2004 Apr 5;321(1-3):59-69. doi: 10.1016/j.scitotenv.2003.08.029.
The aim of this study was to determine the concentrations of arsenic (As), cadmium (Cd), chromium (Cr), mercury (Hg), manganese (Mn), lead (Pb), and vanadium (V) in soil and chard samples collected in various industrial sites of Tarragona County (Spain), an area with an important number of petrochemical industries. Samples were also collected in urban (Tarragona downtown) and presumably unpolluted (blank samples) sites. Human health risks derived from metal inhalation and ingestion of soils were also assessed. With the exception of an increase in the levels of Cd and V, significant differences in soil samples from the industrial and the unpolluted zone were not found. In chard samples, significant differences between collection sites were only noted for V concentrations. For non-carcinogenic risks, the current levels of metals in the industrial area were lower than those considered as safe for the general population. In relation to carcinogenic risks, only As ingestion and Cr inhalation in the industrial zone might potentially cause an increase of the cases of cancer. A Kohonen self-organized map (an Artificial Neural Network) showed differences in metal concentrations according to the zone of origin of the samples. The current results suggest that although in general terms the petrochemical complex is not a relevant metal pollution source for the area, attention should be paid to As, Cr and V.
本研究的目的是测定在西班牙塔拉戈纳县各个工业场所采集的土壤和甜菜样品中砷（As）、镉（Cd）、铬（Cr）、汞（Hg）、锰（Mn）、铅（Pb）和钒（V）的浓度，该地区有大量石化行业。还在城市（塔拉戈纳市中心）和可能未受污染的（空白样品）场所采集了样品。还评估了因吸入和摄入土壤中的金属而产生的人体健康风险。除了镉和钒含量有所增加外，未发现工业区和未受污染区土壤样品存在显著差异。在甜菜样品中，仅在钒浓度方面发现采集地点之间存在显著差异。对于非致癌风险，工业区目前的金属含量低于一般人群被认为安全的水平。关于致癌风险，仅工业区的砷摄入和铬吸入可能会导致癌症病例增加。一个Kohonen自组织映射图（一种人工神经网络）显示了根据样品来源区域的金属浓度差异。目前的结果表明，尽管总体而言石化综合体不是该地区相关的金属污染源，但应关注砷、铬和钒。
