GERMANIČOVÁ, Milena and Přemysl LUBAL. Spektrofotometrické stanovení uranu(VI) v přítomnosti uhličitanů a šťavelanů a jeho využití pro speciační analýzu uranu(VI) (Spectrophotometric determination of uranium(VI) in the presence of carbonates and oxalates and its application to uranium(VI) speciation analysis). CHEMICKÉ LISTY. Praha: Česká společnost chemická, vol. 100, No 9, p. 821-827. ISSN 0009-2770. 2006.
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Basic information
Original name Spektrofotometrické stanovení uranu(VI) v přítomnosti uhličitanů a šťavelanů a jeho využití pro speciační analýzu uranu(VI)
Name in Czech Spektrofotometrické stanovení uranu(VI) v přítomnosti uhličitanů a šťavelanů a jeho využití pro speciační analýzu uranu(VI)
Name (in English) Spectrophotometric determination of uranium(VI) in the presence of carbonates and oxalates and its application to uranium(VI) speciation analysis
Authors GERMANIČOVÁ, Milena (203 Czech Republic) and Přemysl LUBAL (203 Czech Republic, guarantor).
Edition CHEMICKÉ LISTY, Praha, Česká společnost chemická, 2006, 0009-2770.
Other information
Original language Czech
Type of outcome Article in a journal
Field of Study 10406 Analytical chemistry
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 0.431
RIV identification code RIV/00216224:14310/06:00016335
Organization unit Faculty of Science
UT WoS 000241098300009
Keywords in English ARTIFICIAL NEURAL-NETWORKS; URANYL; COMPLEXATION; 4-(2-PYRIDYLAZO)RESORCINOL; CHEMISTRY; WATER
Tags 4-(2-PYRIDYLAZO)RESORCINOL, ARTIFICIAL NEURAL-NETWORKS, chemistry, Complexation, Uranyl, water
Tags International impact, Reviewed
Changed by Changed by: prof. RNDr. Přemysl Lubal, Ph.D., učo 1271. Changed: 26/6/2009 12:26.
Abstract
A spectrophotometric determination of uranium(VI) in the presence of some ligands (hydrogencarbonate, oxalate, hydrogenphosphate) is proposed. Analyzing the spectrophotometric data by the principal component analysis, the formation of ternary complexes was proved at low concentrations of hydrogencarbonate and oxalate; however, they decompose and more stable binary complexes [UO2L3](4-) are formed in the presence of ligand excess. This substitution reaction followed by analysis of experimental data applying ANN (Artificial Neural Network) method was utilized for indirect determination of those anions and/or simultaneous analysis of uranium(VI) and hydrogencarbonate/oxalate in their mixtures. This procedure was validated by analysis of mineral waters. The proposed method is precise (rsd < 5%) and accurate and can be applied in speciation analysis of uranium(VI) in mineral waters.
Abstract (in English)
A spectrophotometric determination of uranium(VI) in the presence of some ligands (hydrogencarbonate, oxalate, hydrogenphosphate) is proposed. Analyzing the spectrophotometric data by the principal component analysis, the formation of ternary complexes was proved at low concentrations of hydrogencarbonate and oxalate; however, they decompose and more stable binary complexes [UO2L3](4-) are formed in the presence of ligand excess. This substitution reaction followed by analysis of experimental data applying ANN (Artificial Neural Network) method was utilized for indirect determination of those anions and/or simultaneous analysis of uranium(VI) and hydrogencarbonate/oxalate in their mixtures. This procedure was validated by analysis of mineral waters. The proposed method is precise (rsd < 5%) and accurate and can be applied in speciation analysis of uranium(VI) in mineral waters.
Links
GA203/02/1103, research and development projectName: Umělé neuronové sítě a plánování pokusů v analytické chemii, zejména v separačních metodách
Investor: Czech Science Foundation, Artificial neural networks and experimental design in analytical chemistry, especially in separation methods
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