The concentrations of 23 polycyclic aromatic hydrocarbons (PAHs; 16 parent and 7 alkylated PAHs) were determined in 113 surface marine sediment samples, 13 on-land sediment samples and 8 subsampled push cores retrieved from the Canadian Arctic Archipelago (CAA). PAHs were extracted via accelerated solvent extraction and quantified via gas chromatography–mass spectrometry. The sums of the concentrations of 16 priority PAHs in the surface sediments ranged from 7.8 to 247.7 ng g^-1 (dry weight basis, dw). The PAH inputs to the sediments have remained constant during the last century. Source-diagnostic ratios and statistical analysis suggest that the PAHs in the CAA mainly originate from natural petrogenic sources, with some pyrogenic sources. Temporal trends did not indicate major source shifts and largely indicated petrogenic inputs. Overall, the sediments retrieved from the CAA have low PAH concentrations, which indicates a low ecological risk for benthic or other organisms living near the water-sediment interface.

23 种多环芳烃 (PAHs；16 种母体和 7 种烷基化 PAHs) 的浓度在 113 个表层海洋沉积物样品、13 个陆上沉积物样品和 8 个从加拿大北极群岛 (CAA) 回收的二次取样推芯中测定。多环芳烃通过加速溶剂萃取进行萃取，并通过气相色谱-质谱法进行定量。表层沉积物中 16 种优先多环芳烃的浓度总和为 7.8 至 247.7 ng g ^-1（干重基础，dw）。上个世纪，沉积物中的 PAH 输入量一直保持不变。源诊断比和统计分析表明，CAA 中的 PAHs 主要来源于天然的岩石源，也有一些热源。时间趋势并未表明主要的来源转移，而在很大程度上表明了成岩输入。总体而言，从 CAA 回收的沉积物的 PAH 浓度较低，这表明生活在水-沉积物界面附近的底栖生物或其他生物的生态风险较低。