Articles | Volume 17, issue 21
Technical note
10 Nov 2020
Technical note |  | 10 Nov 2020

Technical note: Single-shell δ11B analysis of Cibicidoides wuellerstorfi using femtosecond laser ablation MC-ICPMS and secondary ion mass spectrometry

Markus Raitzsch, Claire Rollion-Bard, Ingo Horn, Grit Steinhoefel, Albert Benthien, Klaus-Uwe Richter, Matthieu Buisson, Pascale Louvat, and Jelle Bijma

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Cited articles

Blamart, D., Rollion-Bard, C., Meibom, A., Cuif, J.-P., Juillet-Leclerc, A., and Dauphin, Y.: Correlation of boron isotopic composition with ultrastructure in the deep-sea coral Lophelia pertusa: Implications for biomineralization and paleo-pH, Geochem. Geophy. Geosy., 8, Q12001,, 2007. 
Branson, O., Kaczmarek, K., Redfern, S. A. T., Misra, S., Langer, G., Tyliszczak, T., Bijma, J., and Elderfield, H.: The coordination and distribution of B in foraminiferal calcite, Earth Planet. Sc. Lett., 416, 67–72,, 2015. 
Fietzke, J., Heinemann, A., Taubner, I., Böhm, F., Erez, J., and Eisenhauer, A.: Boron isotope ratio determination in carbonates via LA-MC-ICP-MS using soda-lime glass standards as reference material, J. Anal. At. Spectrom., 25, 1953,, 2010. 
Fietzke, J., Ragazzola, F., Halfar, J., Dietze, H., Foster, L. C., Hansteen, T. H., Eisenhauer, A., and Steneck, R. S.: Century-scale trends and seasonality in pH and temperature for shallow zones of the Bering Sea, P. Natl. Acad. Sci. USA, 112, 2960–2965,, 2015. 
Gaillardet, J., Lemarchand, D., Göpel, C., and Manhès, G.: Evaporation and Sublimation of Boric Acid: Application for Boron Purification from Organic Rich Solutions, Geostand. Newsl., 25, 67–75,, 2001. 
Short summary
The isotopic composition of boron in carbonate shells of marine unicellular organisms is a popular tool to estimate seawater pH. Usually, many shells need to be dissolved and measured for boron isotopes, but the information on their spatial distribution is lost. Here, we investigate two techniques that allow for measuring boron isotopes within single shells and show that they yield robust mean values but provide additional information on the heterogeneity within and between single shells.
Final-revised paper