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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

D - Stať ve sborníku

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

<a href="/cs/project/GAP206%2F10%2F1219" target="_blank" >GAP206/10/1219: Progresivní metody úpravy vzorků, prekoncentrace, separace a detekce pro analýzy v biochemii a klinické a environmentální chemii</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

CECE 2012

ISBN

978-80-904959-1-3

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

136-139

Název nakladatele

Institute of Analytical Chemistry AS CR

Místo vydání

Brno

Místo konání akce

Hotel Continental, Brno, Czech Republic

Datum konání akce

1. 1. 2012

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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