Polycyclic aromatic hydrocarbons data in sediments from the Canadian Arctic Archipelago

Within the context of climate change, the Arctic is undergoing major perturbations: because the summer sea ice extent is rapidly decreasing, leading to a seasonally ice-free Arctic Ocean, it has been speculated that maritime traffic could increase within the Canadian Arctic Archipelago (CAA); for example, the northwest passage could open to cargo transportation for a longer time period each year by the mid-century. However, maritime traffic and oil exploration within the Arctic could also increase the anthropogenic pressure and pollution load in Arctic ecosystems. Knowing that PAHs are pollutants of interest that could be released by natural and anthropogenic activities, a total of 23 PAHs (16 parent and 7 alkylated PAHs) were analyzed in sediment samples: 113 marine surface sediment samples and 13 terrestrial sediment samples collected from glaciers and rivers. Additionally, 8 push cores were subsampled to determine temporal trends. […]

在气候变化的大背景下，北极正经历着剧烈的扰动：由于夏季海冰范围迅速缩小，导致北极洋在季节性上逐渐无冰，因此推测在加拿大北极群岛（CAA）内可能增加海上交通；例如，西北航道可能从本世纪中叶开始每年对货物运输开放的时间将更长。然而，北极的航海交通和石油勘探也可能加剧北极生态系统的人为压力和污染负荷。鉴于多环芳烃（PAHs）是自然和人为活动可能释放的污染物，本研究对沉积物样本中的23种PAHs（包括16种母体PAHs和7种烷基化PAHs）进行了分析：共分析了113个海洋表面沉积物样本和13个来自冰川和河流的陆地沉积物样本。此外，还对8个推入式柱状样进行了子样本分析，以确定时间趋势。