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A review of present techniques and methodological advances in analyzing Th-234 in aquatic systems
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2006 (English)In: Marine Chemistry, ISSN 0304-4203, E-ISSN 1872-7581, Vol. 100, no 3-4, 190-212 p.Article in journal (Refereed) Published
Abstract [en]

The short-lived thorium isotope Th-234 (half-life 24.1 days) has been used as a tracer for a variety of transport processes in aquatic systems. Its use as a tracer of oceanic export via sinking particles has stimulated a rapidly increasing number of studies that require analyses of Th-234 in both marine and freshwater systems. The original Th-234 method is labor intensive. Thus, there has been a quest for simpler techniques that require smaller sample volumes. Here, we review current methodologies in the collection and analysis of Th-234 from the water column, discuss their individual strengths and weaknesses, and provide an outlook on possible further improvements and future challenges. Also included in this review are recommendations on calibration procedures and the production of standard reference materials as well as a flow chart designed to help researchers find the most appropriate Th-234 analytical technique for a specific aquatic regime and known sampling constraints. (c) 2005 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2006. Vol. 100, no 3-4, 190-212 p.
Keyword [en]
Th-234; methodology; sampling; analytical techniques; export
National Category
Natural Sciences
Research subject
SWEDARCTIC 2001, Arctic Ocean 2001
Identifiers
URN: urn:nbn:se:polar:diva-3321DOI: 10.1016/j.marchem.2005.10.012OAI: oai:DiVA.org:polar-3321DiVA: diva2:1054728
Note

Workshop on the Future Applications of 234th in Aquatic Ecosystems (FATE), Woods Hole, MA, AUG, 2004

Available from: 2016-12-09 Created: 2016-12-09 Last updated: 2016-12-09

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  • apa
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