Abstract This study employed chemical characterisation to determine the source of polycyclic aromatic hydrocarbons (PAHs) in the terrestrial soils of King George Island, Antarctica. The total concentrations of 12 PAHs in the samples of terrestrial soils collected at 44 sites ranged from 1.83 to 32.9 ng g−1 with an average value of 10.8 ± 8.22 ng g−1. The concentrations of these PAHs were relatively lower compared with those found in other studies in other locations. The spatial distributions of PAHs showed the highest concentrations to be in areas adjacent to the Great Wall Station and the road network, and light molecular weight PAHs were predominant. Three- and four-ring PAHs were the most abundant, representing 48.3% and 27.1% of the total, respectively. Although the binary diagnostic ratios indicated petrogenic sources as the main PAH-emission sources, principal components analysis and hierarchical cluster analysis suggested that electricity generators (22.84%) and light-duty gasoline (18.94%) are the main sources in the soil of King George Island, Antarctica.

中文翻译：

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南极乔治王岛陆地土壤中多环芳烃的来源解析

摘要 本研究采用化学表征来确定南极乔治王岛陆地土壤中多环芳烃 (PAH) 的来源。在 44 个地点采集的陆地土壤样品中 12 种多环芳烃的总浓度范围为 1.83 至 32.9 ng g-1，平均值为 10.8 ± 8.22 ng g-1。与在其他地方的其他研究中发现的浓度相比，这些多环芳烃的浓度相对较低。PAHs 的空间分布显示，长城站和路网附近区域的浓度最高，且以轻分子量 PAHs 为主。三环和四环多环芳烃含量最高，分别占总量的 48.3% 和 27.1%。