Papadopoulos A, Prochaska C, Papadopoulos F, Gantidis N, Metaxa E
Soil Science Institute of Thessaloniki, National Agricultural Research Foundation, Greece, 57001, Thermi, Thessaloniki, Greece.
Environ Manage. 2007 Oct;40(4):719-26. doi: 10.1007/s00267-007-0073-0. Epub 2007 Aug 27.
The objective of this study was to determine the levels of major phytotoxic metals--including cadmium (Cd), copper (Cu), nickel (Ni), and zinc (Zn)--in agricultural soils of Western Macedonia, Greece. We also wanted to determine the possible relationships among elements and between soil properties and elemental concentrations. Surface soil samples, n = 570, were collected and analyzed. The results of the elemental analysis showed that the mean metal concentrations were consistent with reported typical concentrations found in Greek agricultural soils in the cases of Zn and Cu. Cd exhibited lower and Ni higher mean concentrations than the typical levels reported in the literature. Metal concentrations in the majority of the examined samples (>69%) were found to be higher than the respective critical plant-deficiency levels. However, only 0.4% and 0.2% of the analyzed soil samples, respectively, exhibited Cd and Ni concentrations higher than the levels that cause plant toxicity, as referenced by other investigators. These results suggest that the soils studied can be considered as unpolluted with respect to the examined food-chain metal contaminants. However, the levels of the metal concentrations in some of the soil samples, and the low correlation of the metals with soil properties, suggest an anthropogenic rather that lithogenic origin.
本研究的目的是测定希腊西马其顿农业土壤中主要的植物毒性金属——包括镉（Cd）、铜（Cu）、镍（Ni）和锌（Zn）——的含量。我们还想确定元素之间以及土壤性质与元素浓度之间的可能关系。采集并分析了n = 570个表层土壤样本。元素分析结果表明，在锌和铜的情况下，平均金属浓度与希腊农业土壤中报道的典型浓度一致。镉的平均浓度低于文献报道的典型水平，而镍的平均浓度则高于该水平。在大多数检测样本（>69%）中，金属浓度高于各自的植物临界缺乏水平。然而，分别只有0.4%和0.2%的分析土壤样本中镉和镍的浓度高于其他研究者所引用的导致植物毒性的水平。这些结果表明，就所检测的食物链金属污染物而言，所研究的土壤可被视为未受污染。然而，一些土壤样本中的金属浓度水平以及金属与土壤性质的低相关性表明其来源是人为的而非岩石成因的。
