The urea biosensor based on luminescence of Eu(III) ternary complex of DO3A ligand

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00095481" target="_blank" >RIV/00216224:14310/17:00095481 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs00706-017-2043-4" target="_blank" >https://link.springer.com/article/10.1007%2Fs00706-017-2043-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00706-017-2043-4" target="_blank" >10.1007/s00706-017-2043-4</a>

Result language
angličtina
Original language name
The urea biosensor based on luminescence of Eu(III) ternary complex of DO3A ligand
Original language description
The Eu(III) ternary complex with 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (H(3)DO3A) and picolinate "antenna" ligand ([Eu(DO3A)(L)](-)) reacts with carbonate anions to form the more stable non-fluorescent [Eu(DO3A)(CO3)](2-) complex. This substitution reaction was employed for indirect determination of carbonate formed in course of urea hydrolysis catalyzed by the urease enzyme. This new analytical procedure was proposed for the determination of both analytes (urea, urease) and this sensitive luminescence-based biosensor can be used in both kinetic time-dependent and equilibrium end-point modes. This method, with analytical figures of merit (limit of detection 0.05 mM, dynamic range 0.05-5.00 mM), does not show any systematic error and therefore can be utilized for urea analysis in biological samples (e.g., urine). It was also demonstrated that some metal ions (e.g., Zn(II), Pb(II), Cd(II), Ag(I), etc.) inhibit the enzymatic hydrolysis of urea and this effect can be utilized for their determination; therefore, it is recommended to add EDTA as masking agent prior to enzymatic urea analysis.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10406 - Analytical chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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