Fluorescence spectroscopy on protactinium(IV) in aqueous solution
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Christian M. Marquardt
Summary
This 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.
© 2004 Oldenbourg Wissenschaftsverlag GmbH
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Articles in the same Issue
- On-line anion exchange of rutherfordium in HF/HNO3 and HF solutions
- The oxidation of uranium(IV) ions by nitrous acid in 30% tri-butyl phosphate
- Anion-exchange behavior of Mo and W as homologs of Sg (element 106) in HCl and HNO3 as well as in mixed HCl-HF and HNO3-HF solutions
- Crystal structures of Np(VI) and Pu(VI) phthalates, [NpO2{(OOC)2C6H4}H2O]·1/3H2O and [PuO2{(OOC)2C6H4}H2O]·H2O
- TRLIFS study of Eu(III) spectroscopic properties to obtain structural and thermodynamic informations on lanthanide-malonamide complexes in the Eu(III)/NaNO3/TetraEthylMalonAmide system
- Sorption of fission product radionuclides, 137Cs and 90Sr, by Savannah River Site sediments impregnated with colloidal silica
- Removal of silver and antimony radionuclides from low-level liquid radioactive waste of a research reactor through different scavenging precipitations
- Determination of trace element concentration in infant head hair of Rawalpindi/Islamabad area using INAA technique
- Fluorescence spectroscopy on protactinium(IV) in aqueous solution
