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- W2899850346 abstract "Volcanic eruptions are widely used in ice core science to date or synchronize ice cores. Volcanoes emit large amounts of SO2 that is subsequently converted in the atmosphere into sulfuric acid/sulphate. Its discrete and continuous quantification is currently used to determine the ice layers impacted by volcanic emissions, but available high-resolution sulphate quantification methods in ice core (Continuous Flow Analysis (CFA)) struggle with insufficient sensitivity. Here, we present a new high-resolution CFA chemiluminescence method for the continuous determination of Fe2+ species in ice cores that shows clear Fe2+ peaks concurrent with volcanic sulphate peaks in the ice core record. The method, applied on a Greenland ice core, correctly identifies all volcanic eruptions from between 1588 to 1611 and from 1777 to 1850. The method has a detection limit of ∽5 pg g−1 and a quadratic polynomial calibration range of up to at least 1760 pg g−1. Our results show that Fe2+ is a suitable proxy for identifying past volcanic events." @default.
- W2899850346 created "2018-11-16" @default.
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- W2899850346 date "2019-03-01" @default.
- W2899850346 modified "2023-09-26" @default.
- W2899850346 title "Fe2+ in ice cores as a new potential proxy to detect past volcanic eruptions" @default.
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- W2899850346 doi "https://doi.org/10.1016/j.scitotenv.2018.11.075" @default.
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