Method for on-line pre-concentration and analysis of heavy metals using ligand step gradient focusing in combination with ITP

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F12%3A00192917" target="_blank" >RIV/62156489:43210/12:00192917 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Method for on-line pre-concentration and analysis of heavy metals using ligand step gradient focusing in combination with ITP
Original language description
To reach higher sensitivity in metal analysis we developed convenient sample pre-concentra- tion method which was on-line combined with common analytical ITP. Developed pre-concentration method is based on the principle of stationary neutralization reaction boundary-NRB and its combination with ligand - chelating agents. A stationary ligand step gradient -- LSG [1] boundary is created in the column with two adjacent electrolytes branches of different chelating power and pH. In acid phase, metal and metal complexes are positively charged and forced migrate to the LSG boundary, in the alkaline phase, the complexes are negatively charged and again migrate towards LSG-boundary. A steady state zone of concentrated metal complexes is created. Focused zones are then mobilized and analyzed by ITP. Presence of sample metal ions in one electrolyte /dosing elektrolyte-DE/ during the focusing causes a time dependent accumulation of the metals
Czech name
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Czech description
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Project
<a href="/en/project/GAP206%2F10%2F1219" target="_blank" >GAP206/10/1219: Progressive methods of sample clean-up, preconcentration, separation and detection in biochemical, clinical and environmental analyses</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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