Aslam Shazia N, Huber Carolin, Asimakopoulos Alexandros G, Steinnes Eiliv, Mikkelsen Øyvind
Department of Chemistry, NTNU, Norwegian University of Science and Technology, Trondheim 7491, Norway.
Department of Chemistry, NTNU, Norwegian University of Science and Technology, Trondheim 7491, Norway.
Sci Total Environ. 2019 Oct 1;685:1127-1138. doi: 10.1016/j.scitotenv.2019.06.060. Epub 2019 Jun 8.
Despite being a remote location, the Arctic is a major receptor for anthropogenic pollution transported from the mid-latitudes. Vegetation and underlying organic soils in the Norwegian Arctic, Svalbard were used to study the occurrences of polychlorinated biphenyls (PCBs) and trace elements. In this study, current concentrations of PCBs and trace elements, namely, Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, S, Sb, U and Zn in the terrestrial compartments of Svalbard are presented. Samples were collected from Adventdalen near Longyearbyen and from areas in proximity to Ny-Ålesund. There was significant variability in soil organic matter (SOM) among the soils analysed (5.0%-72.1%), with the highest values detected in Ny-Ålesund. The concentrations of Al, As, Cr Cu, Fe, Pb and Ni were associated with the geology of the local bedrock. The concentrations of all elements, except for Cd, Hg and Zn, were higher in soils than those in the overlying vegetation layers. Mean concentrations of ∑PCBs were significantly higher in vegetation (6.90 ± 0.81 ng g dw) than the underlying organic soils (3.70 ± 0.36 ng g dw). An inverse correlation of PCBs with the elements originating from the local bedrock indicated that their concentrations were potentially impacted by atmospheric deposition. PCBs and Cd were strongly associated, proposing a potential concomitant source of origin in Svalbard. Concentrations of PCBs and trace elements measured herein were below the proposed guidelines for Norwegian soil quality.
尽管北极地处偏远，但它却是从中纬度地区传输来的人为污染的主要受体。挪威北极地区斯瓦尔巴群岛的植被和下层有机土壤被用于研究多氯联苯（PCBs）和微量元素的存在情况。在本研究中，给出了斯瓦尔巴群岛陆地部分中多氯联苯和微量元素（即铝、砷、镉、铬、铜、铁、汞、锰、镍、铅、硫、锑、铀和锌）的当前浓度。样本采集自朗伊尔城附近的阿德vent河谷以及新奥尔松附近地区。在所分析的土壤中，土壤有机质（SOM）存在显著差异（5.0% - 72.1%），其中新奥尔松检测到的值最高。铝、砷、铬、铜、铁、铅和镍的浓度与当地基岩地质有关。除镉、汞和锌外，所有元素在土壤中的浓度均高于其上覆植被层中的浓度。植被中多氯联苯的平均浓度（6.90 ± 0.81 ng g干重）显著高于下层有机土壤（3.70 ± 0.36 ng g干重）。多氯联苯与源自当地基岩的元素呈负相关，这表明它们的浓度可能受到大气沉降的影响。多氯联苯和镉紧密相关，这表明在斯瓦尔巴群岛可能存在潜在的共同来源。本文测量的多氯联苯和微量元素浓度低于挪威土壤质量的建议标准。
