Authors:
H. Das

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R. van der Weyden University Utrecht Institute for Earth Sciences P.O. Box 80.021 3508 TA Utrecht (The Netherlands)

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Abstract  

The systematics of isotopic exchange in a heterogeneous batch system between a dilute aqueous solution and an adsorbate or the solid adsorbent are discussed. In particular, the influence of the experimental precision on the detection of an eventual non-reactive fraction of the adsorbate is considered, down to ~ 5% of which is detectable. The exchange with the solid adsorbent is illustrated by the case of45Ca2+ and calcite. The minimum layer thickness observable in surface exchange is ~ 0.05 m. The same formalism can be applied to uptake due to recrystallization of the solid. It enables distinction between this phenomenon and diffusion into the solid.

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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)