Comparison and performance of two cosmogenic nuclide sample preparation procedures of in situ produced 10Be and 26Al

Abstract Cosmogenic radionuclide 10 Be and 26 Al targets (BeO 2 O 3 ) for AMS analysis are produced by a growing number of geochemical laboratories, employing different sample processing methods the extraction from environmental materials. The reliability this geochronological tool depends on data reproducibility independent preparation steps measurements. Our results demonstrate that concentrations processed following different, commonly used protocols measured at two facilities lead to consistent results. However, insoluble fluoride precipitates, if formed during processing, can cause decreased results, while unaffected.