Dual carbonate sensor based on Eu(III) complex of DO3A ligand
| Autoři | |
|---|---|
| Rok publikování | 2016 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Monatshefte für Chemie - Chemical Monthly |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | http://dx.doi.org/10.1007/s00706-016-1722-x |
| Doi | http://dx.doi.org/10.1007/s00706-016-1722-x |
| Obor | Analytická chemie, separace |
| Klíčová slova | luminiscence probe; electrochemical probe; carbonate; Eu(III) complexes; macrocyclic ligands |
| Popis | Eu(III) ternary complexes with 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (H(3)DO3A) and picolinate-like "antenna" ligands ([Eu(DO3A)(L)](-)) react with carbonate anion to form more stable [Eu(DO3A)(CO3)](2-) complexes which are non-fluorescent. Furthermore, [Eu(DO3A)(L)](-) and [Eu(DO3A)(CO3)](2-) differ in their electrochemical behavior. [Eu(DO3A)(L)](-) are therefore suggested as sensitive luminescence-based and also electrochemical sensors of carbonate anion. Both luminescence and voltammetric sensing strategies show similar analytical figures of merit (limit of detection 0.2 mM, dynamic range 0.2-1.6 mM). The voltammetric procedure was successfully tested in field conditions for the quantitative analysis of bicarbonate/carbonate in environmental water samples, utilizing portable potentiostat and screen-printed electrode. |
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