Lake ecosystems are strongly coupled to features of their surrounding landscapes such as geomorphology, lithology, vegetation and hydrological characteristics. In the 2010–2018 summer seasons, we investigated an Arctic flow-through lake system Revvatnet, located in the vicinity of the coastal zone of Hornsund fjord in Svalbard, characterising its hydrological properties and the chemical composition of its waters. The lake system comprises of a small upper lake and a large lower one, the latter cone-shaped, with −29.1 m maximum depth. With near-neutral pH (full range 6.5–8.4) and low EC (7–147 μS cm-1), the lake has rather similar characteristics to many Arctic lakes. Metal and metalloid concentrations were either similar across the lake system or increased downstream (except Zn, which has important ore-bearing veins in the upper part of the catchment), which is consistent with the likely slow dissolution of suspended particles within the lakes. The ∑PAHs concentrations ranged from <MDL to 2151 ng L-1, and according to the indicator PAHs concentration ratios, they originated from a mixture of combustion processes (they were not petrogenic). Principal component analysis showed that seasonal variability was the most characteristic feature of the chemical composition of these waters, although there appear to be consistent changes with time (sampling year) as well. Future research should explore the occurrence of high maxima in the concentrations of priority pollutants, such as PAHs, metals and metalloids (e.g. As).

湖泊生态系统与其周围景观的特征密切相关，例如地貌，岩性，植被和水文特征。在2010–2018夏季，我们研究了北极流经湖泊的Revvatnet系统，该系统位于斯瓦尔巴特群岛Hornsund峡湾沿海地区附近，表征其水文特性和水域的化学成分。湖泊系统包括一个小上湖和一个大下湖，后者呈圆锥形，最大深度为-29.1 m。由于具有接近中性的pH（全范围6.5–8.4）和低EC（7–147μScm-1），该湖泊与许多北极湖泊具有相当相似的特征。整个湖泊系统中的金属和准金属浓度相似或在下游增加（锌，它在集水区的上部有重要的含矿脉），这与湖泊中悬浮颗粒可能缓慢溶解的现象是一致的。∑PAHs的浓度范围从<MDL到2151 ng L-1，并且根据指示剂PAHs的浓度比，它们起源于混合燃烧过程（它们不是岩石成因的）。主成分分析表明，季节性变化是这些水化学成分的最典型特征，尽管随时间（采样年）的变化似乎也是一致的。未来的研究应探索在优先污染物（如PAHs，金属和准金属（如As））中出现最高浓度最大值的情况。∑PAHs的浓度范围从<MDL到2151 ng L-1，并且根据指示剂PAHs的浓度比，它们起源于混合燃烧过程（它们不是岩石成因的）。主成分分析表明，季节性变化是这些水化学成分的最典型特征，尽管随时间（采样年）的变化似乎也是一致的。未来的研究应探索在优先污染物（如PAHs，金属和准金属（如As））中出现最高浓度最大值的情况。∑PAHs的浓度范围从<MDL到2151 ng L-1，并且根据指示剂PAHs的浓度比，它们起源于混合燃烧过程（它们不是岩石成因的）。主成分分析表明，季节性变化是这些水化学成分的最典型特征，尽管随时间（采样年）的变化似乎也是一致的。未来的研究应探索在优先污染物（如PAHs，金属和准金属（如As））中出现最高浓度最大值的情况。主成分分析表明，季节性变化是这些水化学成分的最典型特征，尽管随时间（采样年）的变化似乎也是一致的。未来的研究应探索在优先污染物（如PAHs，金属和准金属（如As））中出现最高浓度最大值的情况。主成分分析表明，季节性变化是这些水化学成分的最典型特征，尽管随时间（采样年）的变化似乎也是一致的。未来的研究应探索在优先污染物（如PAHs，金属和准金属（如As））中出现最高浓度最大值的情况。