Zobrazeno 1 - 10
of 124
pro vyhledávání: '"R. KLENZE"'
Publikováno v:
ract. 101:561-570
Summary Sorption plays a major role in the safety assessment of nuclear waste disposal. In the present theoretical study we focused on understanding the interaction of trivalent lanthanides and actinides (La3+, Eu3+ and Cm3+) with the corundum (110)
Autor:
Horst Geckeis, Thomas Fanghänel, Jörg Rothe, Thomas Rabung, Xu-cong Wang, R. Klenze, Melissa A. Denecke
Publikováno v:
Radiochimica Acta. 94:609-618
Sorption of trivalent Cm onto γ-Al2O3is investigated by time-resolved laser fluorescence spectroscopy (TRLFS). The pH dependent sorption of Cm(III) is followed at constant ionic strength of 0.1 M NaClO4under argon atmosphere in the pH range between
Publikováno v:
Radiochimica Acta. 93:133-139
SummaryThe complexation of248Cm(III) with aqueous silicic acid is investigated in the pH range of 1.5–9.0 in 0.03 M NaCl with varying the silicate concentration under and over saturation in reference to the solubility of amorphous silica in order t
Publikováno v:
Radiochimica Acta. 92:691-695
SummarySorption of Cm(III) ontoγ-alumina coated with humic acid (HA) is studied by the Time Resolved Laser Fluorescence Spectroscopy (TRLFS). The experiments are performed at 0.1 M NaClO4, 0.44 g/Lγ-Al2O3, 10 mg/L HA and at a metal ion concentratio
Publikováno v:
The Journal of Physical Chemistry B. 108:17160-17165
In the present study, Cm(III) sorption onto different crystal planes (018), (104), (012), (110), and (001) of sapphire single crystals (area 1 cm2) is investigated at low Cm(III) concentrations and at pH 4.5 and 5.1 by time-resolved laser fluorescenc
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 216:97-108
A study is presented to elucidate how the trivalent actinide ions become incorporated into the formation of aluminosilicate colloids. The acidic Al solution of varying concentration from 10 −5 to 10 −3 mol l −1 , containing the Am 3+ or Cm 3+ i
Publikováno v:
Applied Spectroscopy. 56:852-858
The paper presents the application of laser-induced breakdown spectroscopy (LIBS) for the on-line multielement analyses of glass melts in a vitrification process of high level liquid waste (HLLW). The third harmonic pulse of an Nd:YAG laser is used f
Publikováno v:
Applied Spectroscopy. 56:437-448
Laser-induced breakdown spectroscopy (LIBS) is presented for the on-line multielement analysis of molten radioactive glass at a simulated vitrification process of high level liquid waste (HLLW). A plasma plume is produced by focusing the third harmon
Publikováno v:
Radiochimica Acta. 88:7-17
The complexation of humic acid with Cm(III) and Am(III) is studied in the neutral pH range from 6 to 10 in 0.1 M NaClO4under Ar-atmosphere. Cm(III) and Am(III) species are characterized and quantified by time-resolved laser fluorescence spectroscopy
Publikováno v:
Surface and Interface Analysis. 30:297-300
The importance of humic colloids influencing mobilization or immobilization of metal ions, i.e. actinides, in natural aquatic systems has been emphasized in the context of safety aspects of nuclear waste repositories. The influence of polyvalent cati