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Potentially toxic elements in fen peatland soils located near lignite-fired power plants in Central Poland
Geoderma Regional ( IF 4.1 ) Pub Date : 2021-02-20 , DOI: 10.1016/j.geodrs.2021.e00370
Bartłomiej Glina , Joanna Beata Kowalska , Katarzyna Łuczak , Ryszard Mazurek , Waldemar Spychalski , Łukasz Mendyk

The Grójec Valley (GV) peatland area in Central Poland is located close to lignite-fired power plants, which could be sources of potentially toxic elements (PTE). The aims of this study are: (1) to determine the effect of the lignite-fired power plants on soil pollution, (2) to evaluate pollution indices and magnetic susceptibility methods for determining the origin and distribution of PTE in soils, and (3) to demonstrate the importance of appropriate geochemical background (GB) selection for pollution studies in peatland soils. In order to comprehensively assess the soil pollution, four pollution indices (calculated using various types of GBs), and the mass-specific magnetic susceptibility method were used. The low content of analyzed PTE (Cd, Cr, Cu, Ni, Pb, Zn), the calculated pollution indices, and the magnetic susceptibility values (overall >20 × 10−8 m3 kg−1) indicated generally low pollution levels in the studied soils. This would suggest that power plants have had a minor impact on the fen soils, although exceptions were observed in the southernmost part of GV, the highest content of Cr (6.87–9.11 mg kg−1), Ni (7.11–10.3 mg kg−1) and Cu (14.1–19.5 mg kg−1). In addition, based on the Potential Ecological Risk (RI) and Contamination Security indexes (CSI), this area showed the highest potential ecological risk (81.9–102) and limit of toxicity (0.59–0.67) among the studied plots, respectively. The Enrichment factor (EF) and Contamination Security index (CSI) values were the most comparable, thus we consider that, in combination with magnetic susceptibility measurements, they comprise a useful set of tools for fen soil contamination studies. Furthermore, we suggest the application of an local organic GB (i.e. PTE content in the deeper organic layer) in such studies.



中文翻译:

位于波兰中部褐煤发电厂附近的芬泥炭地土壤中的潜在有毒元素

波兰中部的格洛耶茨谷(GV)泥炭地地区靠近褐煤发电厂,这可能是潜在有毒元素(PTE)的来源。这项研究的目的是:(1)确定褐煤电厂对土壤污染的影响;(2)评价污染指数和磁化率方法,以确定土壤中PTE的起源和分布;以及(3) )以证明选择适当的地球化学背景(GB)对于泥炭地土壤污染研究的重要性。为了全面评估土壤污染,使用了四个污染指数(使用各种类型的GBs计算)和质量比磁化率方法。分析的PTE(Cd,Cr,Cu,Ni,Pb,Zn)含量低,计算出的污染指数,-8  m 3  kg -1)表示研究土壤中的污染水平通常较低。这表明发电厂对plants土壤的影响较小,尽管在GV的最南端发现了例外,其中铬(6.87–9.11 mg kg -1),镍(7.11–10.3 mg kg-)的含量最高。 1)和Cu(14.1-19.5 mg kg -1)。此外,根据潜在生态风险指数(RI)和污染安全指数(CSI),该区域在所研究的样地中分别显示出最高的潜在生态风险(81.9–102)和毒性极限(0.59–0.67)。富集因子(EF)和污染安全指数(CSI)值是最可比较的,因此我们认为,与磁化率测量结合使用,它们构成了一套用于进行土壤污染研究的有用工具。此外,我们建议在此类研究中应用局部有机GB(即,较深有机层中的PTE含量)。

更新日期:2021-03-07
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