title: A time-resolved laser fluorescence spectroscopy (TRLFS) study of the interaction of trivalent actinides (Cm(III)) with calcite.
abstract: Cm(III) interaction with calcite was investigated by time-resolved laser fluorescence spectroscopy (TRLFS) in the trace concentration range. Two different Cm(III)/calcite sorption species were found. The first Cm(III) sorption species consists of a curium ion bonded onto the calcite surface. The second Cm(III) sorption species has lost its complete hydration sphere and is incorporated into the calcite bulk structure. The Cm(III)/calcite complexes are characterized by their emission spectra (peak maxima at 607.5 and 618.0 nm) and their fluorescence emission lifetimes (314+/-6 and 1302+/-75 micros).
authors.affiliation: Forschungszentrum Rossendorf, Institute of Radiochemistry, P.O. Box 510119, Dresden D-01314, Germany. T.stumps@fz-rossendorf.de
authors.forename: Thorsten
authors.initials: T
authors.lastname: Stumpf
authors.forename: Thomas
authors.initials: T
authors.lastname: Fanghänel