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A Time-Resolved Laser Fluorescence Spectroscopy (TRLFS) Study of the Interaction of Trivalent Actinides (Cm(III)) with Calcite

✍ Scribed by Thorsten Stumpf; Thomas Fanghänel

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 149 KB
Volume: 249
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.2002.8251

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✦ Synopsis

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).

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