作者
S Roberts, JL Kirk, JA Wiklund, DCG Muir, F Yang, A Gleason, G Lawson
发表日期
2019/7/20
期刊
Science of the Total Environment
卷号
675
页码范围
192-202
出版商
Elsevier
简介
Kejimkujik National Park, in Nova Scotia, Canada, is a sensitive region for metal(loid) contamination, such as mercury, in part due to long-range atmospheric deposition from global and regional industrial centers. The region is remote from industrial centres, but is downwind of major pollution sources in the Eastern United States and Canada, and historically had numerous gold mining sites. Due to a paucity of long-term atmospheric deposition monitoring in this region, little is known about the response of Kejimkujik lakes to multiple changing global, regional and local atmospheric Hg and metal(loid) sources. Here, we used multiple lake sediment cores to reconstruct anthropogenic depositional fluxes of metal(loid)s of concern for the last ~210 years. Results showed that Kejimkujik lake sediments are highly enriched in lead (Pb), antimony (Sb) and tin (Sn), with post-industrial metal(loid) concentrations being >4-fold …
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S Roberts, JL Kirk, JA Wiklund, DCG Muir, F Yang… - Science of the Total Environment, 2019