학술논문
Review of the analysis of 234 Th in small volume (2–4 L) seawater samples: improvements and recommendations.
Document Type
Article
Author
Source
Subject
*SEAWATER
*CHEMICAL processes
*RADIOISOTOPES
*PRECIPITATION scavenging
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Language
ISSN
0236-5731
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. [ABSTRACT FROM AUTHOR]