Chemical speciation of radionuclides migrating in groundwaters

D. Robertson; A. Schilk; K. Abel; E. Lepel; C. Thomas; S. Pratt; E. Cooper; P. Hartwig; R. Killey

doi:10.1007/bf02038420

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 194: Issue 2

Chemical speciation of radionuclides migrating in groundwaters

Authors:

D. Robertson

D. Robertson
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A. Schilk

A. Schilk
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K. Abel

K. Abel
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E. Lepel

E. Lepel
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C. Thomas

C. Thomas
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S. Pratt

S. Pratt Pacific Northwest Laboratory 99352 Richland Washington USA

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E. Cooper

E. Cooper
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P. Hartwig

P. Hartwig
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R. Killey

R. Killey Chalk River Laboratories Chalk River Ontario KOKIJO Canada

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Pages:: 237–252

Online Publication Date:: 14 Aug 2005

Publication Date:: 17 Jul 1995

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02038420

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Abstract

In order to more accurately predict the rates and mechanisms of radionuclide migration from lowlevel waste disposal facilities via groundwater transport, ongoing studies are being conducted at field sites at Chalk River Laboratories to identify and characterize the chemical speciation of mobile, long-lived radionuclides migrating in groundwaters. Large-volume water sampling techniques are being utilized to separate and concentrate radionuclides into particulate, cationic, anionic, and nonionic chemical forms. Most radionuclides are migrating as soluble, anionic species which appear to be predominately organoradionuclide complexes. Laboratory studies utilizing anion exchange chromatography have separated several anionically complexed radionuclides, e.g.,⁶⁰Co and¹⁰⁶Ru, into a number of specific compounds or groups of compounds. Large-volume ultra-filtration experiments have shown that significant fractions of the radionuclides are being transported in these groundwaters in the form of macromolecules having molecular weights ranging from less than 3,000 to 100,000.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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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)