Dolenec Tadej, Serafimovski Todor, Tasev Goran, Dobnikar Meta, Dolenec Matej, Rogan Nastja
Department of Geology, Faculty of Natural Sciences and Engineering, University of Ljubljana, Askerceva 012, 1000, Ljubljana, Slovenia.
Environ Geochem Health. 2007 Feb;29(1):21-32. doi: 10.1007/s10653-006-9057-x. Epub 2006 Nov 22.
The objective of this study was to assess the bulk chemical composition as well as the extent and severity of heavy metal contamination in the paddy soil of Kocani Field (eastern Macedonia). The results revealed that the paddy soil of the western part of Kocani Field is severely contaminated with Pb, Zn, As and Cd in the vicinity of the Zletovska River due to irrigation with riverine water that is severely affected by acid mine and tailing effluents from the Pb-Zn mine in Zletovo. The detected total concentrations of these metals are far above the threshold values considered to be phytotoxically excessive for surface soil. The paddy soil in the vicinity of the Zletovska River was also found to exhibit elevated levels of Ba, Th, U, V, W, Mo, Cu, Sb, Bi, Ag, Au, Hg and Tl, with concentrations above their generally accepted median concentration values obtained during this study. A correlation matrix revealed that the Mn and Fe oxides/hydroxides are the most important carrier phase for several trace elements, with the exception of rare earth elements (REEs). These also represent a major sink for the observed heavy metal pollution of the soil. REEs are mostly associated with two phases: light (L)REEs are bound to K-Al, while heavy (H)REEs are bound to Mg-bearing minerals. Although there is no direct evidence of a health risk, the paddy soil in the vicinity of Zletovska River needs further investigation and an assessment should be made of its suitability for agricultural use, particularly in view of the highly elevated concentrations of Pb, Zn, As and Cd.
本研究的目的是评估科察尼田地（马其顿东部）稻田土壤的大量化学成分以及重金属污染的程度和严重性。结果表明，由于使用了受兹莱托沃铅锌矿酸性矿山和尾矿废水严重影响的河水进行灌溉，科察尼田地西部的稻田土壤在兹莱托夫斯卡河附近受到铅、锌、砷和镉的严重污染。这些金属的检测总浓度远高于被认为对表层土壤具有植物毒性过量的阈值。还发现，兹莱托夫斯卡河附近的稻田土壤中钡、钍、铀、钒、钨、钼、铜、锑、铋、银、金、汞和铊的含量也有所升高，其浓度高于本研究期间获得的普遍接受的中值浓度值。相关矩阵表明，除稀土元素（REEs）外，锰和铁的氧化物/氢氧化物是几种微量元素最重要的载体相。它们也是观察到的土壤重金属污染的主要汇。稀土元素主要与两个相相关：轻（L）稀土元素与钾铝结合，而重（H）稀土元素与含镁矿物结合。尽管没有直接证据表明存在健康风险，但兹莱托夫斯卡河附近的稻田土壤需要进一步调查，并应对其农业适用性进行评估，特别是考虑到铅、锌、砷和镉的浓度大幅升高。
