The potential for a continuous 10Be record measured on ice chips from a borehole ...

Ice cores are excellent archives for obtaining long and continuous 10Be records. However, traditional ice core 10Be measurements required a lot of ice (0.5–1kg) and often needed to be connected to a large and costly ice core project. These reasons have been the factors limiting the number and variet...

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Bibliographic Details
Main Authors: Nguyen, Long, Paleari, Chiara I., Müller, Stefanie, Christl, Marcus, Mekhaldi, Florian, Gautschi, Philip, Mulvaney, Robert, Rix, Julius, Muscheler, Raimund
Format: Article in Journal/Newspaper
Language:English
Published: ETH Zurich 2021
Subjects:
AMS
sample preparation
Beryllium 10
Ice core
Solar activity
Antarc*
Antarctica
East Antarctica
ice core
Online Access:https://dx.doi.org/10.3929/ethz-b-000527992
http://hdl.handle.net/20.500.11850/527992
Description
Summary:Ice cores are excellent archives for obtaining long and continuous 10Be records. However, traditional ice core 10Be measurements required a lot of ice (0.5–1kg) and often needed to be connected to a large and costly ice core project. These reasons have been the factors limiting the number and variety of 10Be projects and data. In this paper, we show measurements of 10Be on small samples (∼45g) of continuous auger ice chips from a borehole at Little Dome C (LDC), East Antarctica. The sample preparation method for 10Be accelerator mass spectrometry (AMS) was tested and optimized using test samples (∼50g) including well-mixed surface ice chips from the LDC site, snow collected in Lund (Sweden) and frozen Milli-Q water. The results show that our small ice samples should be processed without ion exchange filtration of the melt water and cleaning the subsequent Be(OH)2 precipitate. In addition, co-precipitating Be with Fe led to more reproducible measurement currents and offer the potential for higher efficiency ... : Results in Geochemistry, 5 ...

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