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Concentrations of polycyclic aromatic hydrocarbons and trace elements in Arctic soils: A case-study in Svalbard

机译：北极土壤中多环芳烃和微量元素的浓度：以斯瓦尔巴特群岛为例

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摘要

A combined assessment on the levels and distribution profiles of polycyclic aromatic hydrocarbons (PAHs) and trace elements in soils from Pyramiden (Central Spitsbergen, Svalbard Archipelago) is here reported. As previously stated, long-range atmospheric transport, coal deposits and previous mining extractions, as well as the stack emissions of two operative power plants at this settlement are considered as potential sources of pollution. Eight top-layer soil samples were collected and analysed for the 16 US EPA priority PAHs and for 15 trace elements (As, Be, Cd, Co, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Sn, Tl, V and Zn) during late summer of 2014. The highest levels of PAHs and trace elements were found in sampling sites located near two power plants, and at downwind from these sites. The current PAH concentrations were even higher than typical threshold values. The determination of the pyrogenic molecular diagnostic ratios (MDRs) in most samples revealed that fossil fuel burning might be heavily contributing to the PAHs levels. Two different indices, the Pollution Load Index (PLI) and the Geoaccumulation Index (Igeo), were determined for assessing soil samples with respect to trace elements pollution. Samples collected close to the power plants were found to be slightly and moderately polluted with zinc (Zn) and mercury (Hg), respectively. The Spearman correlation showed significant correlations between the concentrations of 16 PAHs and some trace elements (Pb, V, Hg, Cu, Zn, Sn, Be) with the organic matter content, indicating that soil properties play a key role for pollutant retention in the Arctic soils. Furthermore, the correlations between ∑16 PAHs and some trace elements (e.g., Hg, Pb, Zn and Cu) suggest that the main source of contamination is probably pyrogenic, although the biogenic and petrogenic origin of PAHs should not be disregarded according to the local geology.
机译：本文报告了对吡喃酰胺（斯匹次卑尔根中央，斯瓦尔巴群岛）土壤中多环芳烃（PAHs）和微量元素水平和分布特征的综合评估。如前所述，该定居点的远程大气运输，煤炭沉积和先前的采矿提取以及两个运行中的发电厂的烟囱排放被视为潜在的污染源。收集了八个顶层土壤样品并分析了16种美国EPA优先PAH和15种微量元素（As，Be，Cd，Co，Cr，Cu，Hg，Mn，Mo，Ni，Pb，Sn，Tl，V和锌）。2014年夏末。PAH和痕量元素的含量最高，位于两个发电厂附近的采样地点，并且位于这些地点的顺风处。当前的PAH浓度甚至高于典型阈值。大多数样品中热原性分子诊断率（MDR）的确定表明，化石燃料燃烧可能对PAHs含量有很大贡献。确定了两个不同的指标，即污染负荷指数（PLI）和地质累积指数（Igeo），以评估土壤样品中的痕量元素污染。发现在电厂附近收集的样品分别被锌（Zn）和汞（Hg）轻微和中度污染。 Spearman相关性显示16种PAHs的浓度与某些微量元素（Pb，V，Hg，Cu，Zn，Sn，Be）与有机质含量之间具有显着的相关性，表明土壤性质在污染物保留中起着关键作用。北极土壤。此外，∑16多环芳烃与某些微量元素（如汞，铅，锌和铜）之间的相关性表明，主要污染源可能是热源，尽管根据当地情况不应忽略多环芳烃的生物和成因来源地质学。

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  • 来源
    《Environmental research》 |2017年第11期|202-211|共10页
  • 作者

    Montse Marques; Jordi Sierra; Tatiana Drotikova; Montse Mari; Marti Nadal; Jose L. Domingo;

  • 作者单位

    Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Reus, Catalonia, Spain,Environmental Engineering Laboratory, Departament d'Enginyeria Quimica, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain;

    Environmental Engineering Laboratory, Departament d'Enginyeria Quimica, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain,Laboratory of Soil Science, Faculty of Pharmacy, Universitat de Barcelona, Barcelona, Catalonia, Spain;

    University Centre in Svalbard (UNIS), Department of Arctic Technology (AT), Longyearbyen, Norway,Faculty of Chemistry, Biotechnology and Food Science (KBM), Norwegian University of Life Sciences (NMBU), As, Norway;

    Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Reus, Catalonia, Spain,Environmental Engineering Laboratory, Departament d'Enginyeria Quimica, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain;

    Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Reus, Catalonia, Spain;

    Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Reus, Catalonia, Spain;

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  • 正文语种 eng
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  • 关键词

    Svalbard (Arctic); Soil; Environmental pollution; Polycyclic aromatic hydrocarbons (PAHs); Trace elements;

    机译：斯瓦尔巴群岛（北极）;泥;环境污染;多环芳烃（PAHs）;微量元素;

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