Review of the analysis of Th-234 in small volume (2-4 L) seawater samples: improvements and recommendations
Clevenger, Samantha J.
Benitez-Nelson, Claudia R.
Drysdale, Jessica A.
Pike, Steven M.
Buesseler, Ken O.
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The short-lived radionuclide 234Th is widely used to study particle scavenging and transport from the upper ocean to deeper waters. This manuscript optimizes, reviews and validates the collection, processing and analyses of total 234Th in seawater and suggests areas of further improvements. The standard 234Th protocol method consists of scavenging 234Th from seawater via a MnO2 precipitate, beta counting, and using chemical recoveries determined by adding 230Th. The revised protocol decreases sample volumes to 2 L, shortens wait times between steps, and simplifies the chemical recovery process, expanding the ability to more rapidly and safely apply the 234Th method.
© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Clevenger, S. J., Benitez-Nelson, C. R., Drysdale, J., Pike, S., Puigcorbe, V., & Buesseler, K. O. Review of the analysis of Th-234 in small volume (2-4 L) seawater samples: improvements and recommendations. Journal of Radioanalytical and Nuclear Chemistry, 329(1), (2021): 1–13, https://doi.org/10.1007/s10967-021-07772-2.
Suggested CitationClevenger, S. J., Benitez-Nelson, C. R., Drysdale, J., Pike, S., Puigcorbe, V., & Buesseler, K. O. (2021). Review of the analysis of Th-234 in small volume (2-4 L) seawater samples: improvements and recommendations. Journal of Radioanalytical and Nuclear Chemistry, 329(1), 1–13.
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