Infrared spectroscopic study of gamma-radiation-induced hydrogen isotope exchange in clay minerals

Authors
Pushkareva, RA Litovchenko, AS Plastinina, MA Pushkarev, AV Kalinichenko, EA
Citation
Ra. Pushkareva et al., Infrared spectroscopic study of gamma-radiation-induced hydrogen isotope exchange in clay minerals, RADIOCHEMIS, 41(6), 1999, pp. 599-603
Citations number
30
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
RADIOCHEMISTRY
ISSN journal
10663622 → ACNP
Volume
41
Issue
6
Year of publication
1999
Pages
599 - 603
Database
ISI
SICI code
1066-3622(199911/12)41:6<599:ISSOGH>2.0.ZU;2-V
Abstract
It was demonstrated by infrared spectroscopy that gamma-radiation catalyzes hydrogen isotope exchange in crystal hydroxyls of kaolinite and montmorill onite (bentonite). At a gamma-radiation dose of 1.2 x 10(7) Gy about 10-15% of hydroxyls are involved in deuterium exchange. Radiolytic deuterium exch ange is observed in all the major types of crystal hydroxyls of kaolinite e ven in the initial stages of irradiation. Lowering dose by an order of magn itude (to 10(6) Gy) decreases the degree of exchange by a factor of about 3 .