Liquid scintillation spectrometry of beta-emitters in marine samples View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2001-06

AUTHORS

L. Liong Wee Kwong, J. J. La Rosa, S. H. Lee, P. P. Povinec

ABSTRACT

Liquid scintillation spectrometry has become the most widespread method for quantitative analysis of low level β-emitters in environmental samples. This technique has been applied in the measurements of 241Pu, 3H and 90Sr in seawater and sediment samples. 241Pu can be measured by direct analysis of an electrodeposited source using α-β discrimination or by extraction of electrodeposited plutonium into a liquid form compatible with scintillation cocktail. Sediment from Mururoa and Fangataufa atolls showed activities ranging from 18 to 44 Bq/kg. A sediment profile sampled around Bikini Atoll in 1997 showed 241Pu activities ranging from 0.3 to 30 Bq/kg. 3H activities in pore water sediment from Mururoa and Fangataufa atolls were of the order of 103 Bq/m3 which demonstrated its underground origin. 90Sr was measured in the presence of 90Y. The counting efficiency was 92.41.5% and the background 0.027±0.001 s-1. The average chemical recovery for 90Sr was 673%. More... »

PAGES

751-755

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1010657131856

DOI

http://dx.doi.org/10.1023/a:1010657131856

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1011615498


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