Strontium Isotope Ratios in Fish Otoliths as Biogenic Tracers of Coal Combustion Residual Inputs to Freshwater Ecosystems,Environmental Science & Technology Letters

当前位置： X-MOL 学术 › Environ. Sci. Technol. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Strontium Isotope Ratios in Fish Otoliths as Biogenic Tracers of Coal Combustion Residual Inputs to Freshwater Ecosystems
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2018-11-26 , DOI: 10.1021/acs.estlett.8b00477
Jessica E. Brandt ₁ , Nancy E. Lauer ₂ , Avner Vengosh ₂ , Emily S. Bernhardt ₃ , Richard T. Di Giulio ₁

Affiliation

Permitted and accidental releases of contaminants from coal combustion residual (CCR) storage facilities pose environmental and ecological risks for associated freshwater ecosystems around the world. Previous studies have applied isotope ratios in CCRs as environmental tracers to delineate and quantify the impact of CCRs and other fossil fuel wastes. In this proof-of-concept study, we present data from CCR-receiving as well as non-impacted lakes in North Carolina to assess the applicability of otolith-based strontium isotope ratios as biogenic tracers of CCRs in ecosystems receiving coal-fired power plant effluents. We show that while discrepancies between bulk otolith and surface water ratios likely reflected temporal variations in CCR inputs and/or upstream water sources over fish lifetimes, ⁸⁷Sr/⁸⁶Sr ratios in largemouth bass (Micropterus salmoides) otoliths consistently reflected those in lake sediment pore waters. Because biogenic ⁸⁷Sr/⁸⁶Sr ratios are both geochemically and metabolically stable, they are potentially powerful tools for informing contamination sources and timing alongside studies investigating the effects of co-occurring trace elements in fossil fuel waste streams.

更新日期：2018-11-27

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11