Krossfjord-Kongsfjord system situated on the west coast of Svalbard archipelago is an ideal location to investigate the impacts of climate change on the environment. As a consequence of global warming, metal concentrations in the Arctic region are increasing due to permafrost melting and changes in biological processes. Therefore, the fjord sediments were studied for identification of provenance, mobility, bioavailability, and potential toxicity of metals in the fjord environment. Finer sediments and organic matter were found to be higher away from the glacier outlets, while coarser sediments were found to be higher near the glacier head. Illite, kaolinite, and chlorite constituted the clay mineral assemblage which had slightly influenced the metal distributions. The variations in metal abundance were attributed largely to the glacial activity along with the influence of Atlantic water mass in western Spitsbergen. Fjord system received sediment from the weathering of rocks indicating an input of terrigenous material. Comparison of metals in bulk sediment with Arctic sediment quality guidelines (ASQGs) showed that Zn and Cu were enriched in the sediment. However, to avoid the overestimation of the risk associated, fractionation of the metals was carried out which revealed higher Mn and Co in labile phases that pose a considerable risk to the biota.

中文翻译：

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斯瓦尔巴特群岛北极地区Krossfjord-Kongsfjord系统的峡湾沉积物中金属的来源，迁移率和生物利用度。

位于斯瓦尔巴特群岛西海岸的Krossfjord-Kongsfjord系统是研究气候变化对环境影响的理想场所。全球变暖的结果是，由于多年冻土融化和生物过程的变化，北极地区的金属浓度正在增加。因此，对峡湾沉积物进行了研究，以鉴定峡湾环境中金属的来源，迁移率，生物利用度和潜在毒性。发现较细的沉积物和有机质离冰川出口较高，而较粗的沉积物在冰川头附近较高。伊利石，高岭石和绿泥石构成了粘土矿物组合，对金属的分布影响很小。金属丰度的变化主要归因于冰川活动以及斯匹次卑尔根西部的大西洋水团的影响。峡湾系统从风化岩石中接收到沉积物，表明输入了陆源物质。北极沉积物质量准则（ASQG）对散装沉积物中金属的比较表明，沉积物中富含锌和铜。但是，为避免高估相关风险，对金属进行了分级分离，发现在不稳定相中较高的Mn和Co含量对生物群构成相当大的风险。北极沉积物质量准则（ASQG）对散装沉积物中金属的比较表明，沉积物中富含锌和铜。但是，为避免高估相关风险，对金属进行了分级分离，发现在不稳定相中较高的Mn和Co含量对生物群构成相当大的风险。北极沉积物质量准则（ASQG）对散装沉积物中金属的比较表明，沉积物中富含锌和铜。但是，为避免高估相关风险，对金属进行了分级分离，发现在不稳定相中较高的Mn和Co含量对生物群构成相当大的风险。