Assessment of toxic heavy metals concentrations in soils and wild and cultivated plant species in Limni abandoned copper mining site, Cyprus
Assessment of toxic heavy metals concentrations in soils and wild and cultivated plant species in Limni abandoned copper mining site, Cyprus
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DOI：
10.1016/j.gexplo.2017.03.012
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发表时间：
2017-07-01
影响因子：
3.9
通讯作者：
Varnavas, Soterios P.
中科院分区：
文献类型：
--
作者：
Christou, Anastasis;Theologides, Christodoulos P.;Varnavas, Soterios P.
尾矿是土壤污染的一个严重来源，对公众健康有影响。本研究的目的是：（1）利用污染指标评估塞浦路斯Limni废弃矿山尾矿堆中有毒物质和重金属的迁移水平以及对周围地区土壤的污染程度;（2）调查种植作物对重金属的吸收和积累;以及（3）评估研究区域内生长的本地野生植物物种用于植物管理方法的潜力。尾矿弃石堆表现出显着较高的S，Zn，Cu和Pb的浓度相比，发现在控制参考样品（RS）。Mg、S、Zn、Cu、Pb等元素的侧向迁移导致了尾矿周边地区的金属污染。此外，锰和铜的浓度在尾矿和周边地区超过了农业土壤的最大允许限量。富集因子和地积累指数的计算值也表明了尾矿周边S、Zn和Cu的严重至非常严重的污染。综合污染指数值也揭示了尾矿的极高污染和周围场地的中度污染与所有分析元素。无花果，花生和柠檬的水果，以及在谷物和大麦秸秆镉的浓度超过了MPLs，突出了潜在的镉介导的有害影响，从这些产品的消费。对野生乡土植物中重金属含量的测定表明，粘羊耳菊（Inula viscosa L.）具有应用于植物稳定Cd和Pb的潜力。植物对Pb.总体而言，结果表明，Limni矿山尾矿及其周边场地的高度污染，因此在研究区域的农业活动应被禁止，植物管理应紧急进行。(C)2017爱思唯尔B. V.保留所有权利。
Mine tailings represent a serious source of soil pollution with public health implications. The objectives of this study were: (1) to assess the level of toxic and heavy metal mobilization from the tailing spoil-heap of Limni abandoned mine at Cyprus and the extent of soil contamination to the surrounding area by using pollution indicators; (2) to investigate the uptake and accumulation of heavy metals by cultivated crops; and (3) to estimate the potential of native wild plant species grown in the studied area to be used in phytomanagement approaches. The tailing spoil heap exhibited significantly higher S, Zn, Cu and Pb concentrations compared to the ones found in control reference samples (RS). The lateral mobilization of Mg, S, Zn, Cu and Pb resulted to the contamination of the tailing surrounding areas with thesemetals. Moreover, Mn and Cu concentrations in the tailing and the surrounding areas exceeded the MPLs for agricultural soils. The severe to very severe pollution of the tailing surrounding sides with S, Zn and Cu was also evident by the calculated values of enrichment factor and geoaccumulation index. The values of combined pollution index also uncovered the extremely high pollution of the tailing and the moderate pollution of the surrounding sites with all analyzed elements. The concentration of Cd in fig, peanut and lemon fruits, as well as in the grains and straw of barley exceeded MPLs, highlighting the potential Cd-mediated hazardous effects from the consumption of these produces. The examination of heavy metal content in wild native plant species showed that Inula viscosa L. has the potential to be used for the phytostabilization of Cd and Pb, and Allium ampeloprasum L. for the phytostabilization of Pb. Overall, results suggest that the Limni mine tailing and its surrounding sites are highly polluted; thus agricultural activity in the studied area should be prohibited and phytomanagement should be urgently carried out. (C) 2017 Elsevier B.V. All rights reserved.