Review of the analysis of 234Th in small volume (2–4 L) seawater samples: improvements and recommendations
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10967_2021_Article_7772.pdf
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1.5 MB
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64a19233e02dac1fd8ef20b13efa2497
Author(s)
Clevenger, Samantha J.
Benitez-Nelson, Claudia R.
Drysdale, Jessica
Pike, Steven
Puigcorbé, Viena
Buesseler, Ken O.
Date Issued
June 24, 2021
Publisher
Springer International Publishing
Version
Final published version
Abstract
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1007/s10967-021-07772-2
