A complexation study of Cm(III) and Tb(III) with chelating aromatic ligands by time-resolved laser fluorescence spectroscopy

1998 ◽  
Vol 271-273 ◽  
pp. 746-750 ◽  
Author(s):  
R. Klenze ◽  
P. Panak ◽  
J.I. Kim
Keyword(s):  
Fluorescence Spectroscopy ◽  
Laser Fluorescence ◽  
Time Resolved ◽  
Laser Fluorescence Spectroscopy

Fluorescence spectroscopy on protactinium(IV) in aqueous solution

2004 ◽  
Vol 92 (7) ◽  
Author(s):  
Christian M. Marquardt ◽  
P. J. Panak ◽  
C. Apostolidis ◽  
A. Morgenstern ◽  
C. Walther ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Fluorescence Spectroscopy ◽  
Emission Band ◽  
Ph Value ◽  
Fluorescence Emission ◽  
Laser Fluorescence ◽  
Hypsochromic Shift ◽  
Time Resolved ◽  
Band Position ◽  
Laser Fluorescence Spectroscopy

SummaryThis work focuses on time-resolved laser fluorescence spectroscopy (TRLFS) of Pa(IV) in aqueous solution. Excitation at 308 nm causes a fluorescence emission with a peak maximum at about 460 nm. Thereby, the position of the band´s maximum depends on the concentration, the type of the acid, and the pH value. Increasing complexation of the Pa(IV) ion leads to an increasing hypsochromic shift of the emission band up to 46 nm. In contrast to the band position the half-width (61.6±1.4 nm) and the lifetime (16±2 ns) of the fluorescence emission do not change significantly with changes in the chemical environment of the Pa(IV). The results of this work show that speciation of Pa(IV) can be performed even in aqueous solution by using TRLFS.

Inner-sphere, outer-sphere and ternary surface complexes: a TRLFS study of the sorption process of Eu(III) onto smectite and kaolinite

2002 ◽  
Vol 90 (6) ◽  
Author(s):  
Thorsten Stumpf ◽  
A. Bauer ◽  
F. Coppin ◽  
Thomas Fanghänel ◽  
Jae-Il Kim
Keyword(s):  
Fluorescence Spectroscopy ◽  
Outer Sphere ◽  
Sorption Process ◽  
Laser Fluorescence ◽  
Trace Concentration ◽  
Surface Complexes ◽  
Time Resolved ◽  
Inner Sphere ◽  
Laser Fluorescence Spectroscopy

SummaryThe surface sorption process of Eu(III) onto smectite and kaolinite was investigated by time-resolved laser fluorescence spectroscopy (TRLFS) in the trace concentration range. The experiments were performed in 0.025 M and 0.45 M NaClO

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