Authors:
H. Das

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R. Comans State University at Utrecht Department of Geochemistry, Institute of Earth Sciences P.O. Box 80.021 3508 TA Utrecht (Netherlands)

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Abstract  

Study of137Cs in rivers implies knowledge of its adsorption behaviour towards particulate matter and sediments and the possibility of low-level counting of water and solids. As the adsorption isotherms and kinetics will be discussed separately, this text focuses on the low level counting of137Cs. The use of flat-ended Ge(Li) detectors is compared to that of an anticoincidence array after preconcentration of the cesium ions into a 0.5 ml solid aliquot. The lower limits of determination at a relative standard deviation of 10% are 10 Bq · kg–1 for as received aliquots on a flat Ge(Li) detector and 10 mBq in case of preconcentration from water and counting in the anticoincidence facility. The eventual improvement of the accuracy by applying moving average and smoothing procedures are considered.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)