New line expands NOSAMS’ DIC extraction and graphitization capacity

NOSAMS has expanded its dissolved inorganic carbon (DIC) capabilities with the completion of a second REDICS (Rapid Extraction of DIC System) line. Our original REDICS system continues to produce highly reliable, high-quality data. The new system is interfaced with a custom 12-port CO₂ storage and graphitization system that splits the CO₂ generated by REDICS, storing an aliquot for ¹³C analysis and graphitizing the remainder for radiocarbon analysis.

The new line accommodates 10 different sample volumes, providing greater flexibility for samples with variable DIC concentrations, such as groundwater. This complements the original system, increasing our capacity and representing the first new hydrogen-reduction graphitization line built in-house in 20 years.

Alconini, S., & Sánchez-Canedo, W. (2026). Sacred Sounds, Exchange, and Copper Bells in the Ancient Southeastern Andes: The Yamparas and Inka Empire. Cambridge Archaeological Journal, 1–18. https://doi.org/10.1017/S095977432610064X

Emslie, S. D. (2026). Late Holocene occupation history of the southernmost Adélie penguin colonies at Cape Royds and Cape Barne, Ross Island, Antarctica. Antarctic Science, 1–9. https://doi.org/10.1017/S0954102026100807

Jones, A. G. (2026). Reconstructing Past Alpine Glacier Lengths With the In Situ ¹⁴C¹⁰Be Chronometer [PhD Dissertation, University of Wisconsin - Madison]. ProQuest Theses & Dissertations. https://www.proquest.com/openview/eae37d47dc90fbb79cf060be24525181/1?pq-origsite=gscholar&cbl=18750&diss=y

Mojarro, A., Jost, A. B., Uveges, B. T., Bergmann, K. D., Mackey, T., Dumit, D., Roberts, M. L., Vinther, J., Svennevig, K., Pedersen, L. L., Allaart, L., Bennike, O., & Summons, R. E. (2026). Geochemical data links Late Quaternary-age concretion formation to North Atlantic cold climate episodes. Geochimica et Cosmochimica Acta. https://doi.org/10.1016/j.gca.2026.08.029

Oh, S., Ryu, Y., Han, H., Na, T., Kim, T.-W., Park, J., Kim, G., Druffel, E. R. M., & Hwang, J. (2026). Subglacial Lake Discharge Affects the Age and Concentration Distribution of Dissolved Organic Carbon in Ross Sea Surface Waters. AGU Advances, 7(5), e2026AV002385. https://doi.org/10.1029/2026AV002385

A full bibliography of publications utilizing NOSAMS analyses can be found here.
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