Arctic Ocean 2016 - Microplastics in the Arctic Ocean

This dataset contains data collected during the Canadian-Swedish expedition Arctic Ocean 2016. The research cruise took place August through September 2016, using the icebreaker Oden. For ship data from the cruise, as well as graphics and files describing the route, see https://snd.gu.se/sv/catalogue/study/ecds0221 For descriptions of Work Packages and research conducted during the cruise, see the SWEDARCTIC Arctic Ocean 2016 Expedition Report: http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-3475 Additional information on the expedition, including links to publications, is available at http://www.polarforskningsportalen.se/en/arctic/expeditions/arctic-ocean-2016 Work Package: Physical Oceanography (CTD) Work Package: Heavy Metals Monitoring Microplastics in the world’s oceans pose a potential threat to organisms that depend on the marine environment. In order to effectively assess this threat, information regarding the presence of these particles in the marine environment is particularly important. To date, there is a particular paucity of information regarding microplastics in Polar Regions. The overall aims of the study were to assess (i) the abundance, distribution and composition of microplastics in sub-surface Arctic waters, (ii) whether sea ice acts as a sink for microplastics, (iii) whether microplastics were present in Arctic sediments. The study was conducted onboard the Swedish icebreaker Oden during the Arctic Ocean 2016 expedition during which time (August 8th – September 19th 2016) the vessel traversed 4943 nautical miles. Sampling of microplastics in sub-surface waters was conducted using the (i) bow water system of Oden with a total of 58 samples being collected and, (ii) CTD with a total of 9 CTD casts. Sea-ice cores were collected and processed from 25 stations in the Arctic Ocean. Water from beneath the ice at each station was also pumped and filtered in the field. Surficial sediments from cores at 11 sites were also collected. All samples were stored under appropriate conditions and shipped to the laboratory for further processing. Potential microplastics will be isolated from each sample and these particles will be analysed by relevant analytical techniques (e.g. FT-IR spectroscopy) to confirm the polymer type. Data include: Polymer type of microplastic particles in water, ice, and sediment samples.本数据集包含2016年加拿大-瑞典北冰洋考察队采集的相关数据。本次科考航次于2016年8月至9月开展，所用考察平台为破冰船奥登号（Oden）。 如需获取本次航次的船舶数据、航线相关图表及文件，请访问：https://snd.gu.se/sv/catalogue/study/ecds0221 如需了解本次航次的工作包（Work Package）及开展的研究内容，请参阅《SWEDARCTIC 2016年北冰洋考察队报告》，链接为：http://urn.kb.se/resolve?urn=urn:nbn:se:polar:diva-3475 如需获取本次考察队的更多信息（含相关出版物链接），可访问：http://www.polarforskningsportalen.se/en/arctic/expeditions/arctic-ocean-2016 工作包：物理海洋学（CTD） 工作包：重金属监测 全球海洋中的微塑料（microplastics）对依赖海洋环境的生物构成潜在威胁。为有效评估此类威胁，掌握海洋环境中微塑料颗粒的分布与存在情况尤为关键。截至目前，极地地区微塑料的相关数据仍极为匮乏。本研究的总体目标为：(i) 评估北冰洋次表层水体中微塑料的丰度、分布与组成；(ii) 探究海冰是否可作为微塑料的汇；(iii) 检测北冰洋沉积物中是否存在微塑料。 本次研究依托瑞典破冰船奥登号（Oden），于2016年北冰洋考察航次期间开展（2016年8月8日至9月19日），船舶累计航行4943海里。 次表层水体微塑料采样采用两种方式：(i) 利用奥登号的船首取水系统，共采集58份样品；(ii) 借助CTD进行采样，共完成9次CTD站位投放。 研究人员在北冰洋25个站位采集并处理了海冰岩心，同时对每个站位冰下海水进行现场泵送与过滤。此外，还在11个站点采集了表层沉积物岩心样品。所有样品均在适宜条件下保存，并运至实验室进行后续处理。 研究人员将从每份样品中分离出疑似微塑料颗粒，并通过傅里叶变换红外光谱（FT-IR）等相关分析技术对其进行表征，以确认其聚合物类型。 本数据集包含以下数据：水体、海冰及沉积物样品中微塑料颗粒的聚合物类型。