Sorption of Americium in Tuff and Pure Minerals Using Synthetic and Natural Groundwaters Article

Triay, IR, Meijer, A, Cisneros, MR et al. (1991). Sorption of Americium in Tuff and Pure Minerals Using Synthetic and Natural Groundwaters . RADIOCHIMICA ACTA, 52-53(1), 141-146. 10.1524/ract.1991.5253.1.141

cited authors

  • Triay, IR; Meijer, A; Cisneros, MR; Miller, GG; Mitchell, AJ; Ott, MA; Hobart, DE; Palmer, PD; Perrin, RE; Aguilar, RD

authors

abstract

  • The distribution of Am between selected solid and liquid phases has been studied using initial 241Am solutions with a molarity less than 1 x10-11. The synthetic and natural groundwaters used to prepare the Am solutions have pH values in the 7—8 range and a total alkalinity of approximately 1 mN which is mainly due to bicarbonate. Mass spectrometric isotope dilution was utilized to determine the amount of Am in the solution phase initially and after equilibrium was attained with the selected solid phases. Using this sensitive technique, 7 x 108 atoms of 241Am were accurately measured. The results obtained indicate that the percent of Am lost to the walls of the container in the absence of geologic material varies from 35 to 84. The Am sorption coefficient determined is on the order of 103 ml/g for clinoptilolite, 104 ml/g for tuff consisting mainly of akali feldspar and cristobalite, and 105 ml/g for romanechite. © 1991, Walter de Gruyter. All rights reserved.

publication date

  • January 1, 1991

published in

Digital Object Identifier (DOI)

start page

  • 141

end page

  • 146

volume

  • 52-53

issue

  • 1