Effective Pre-Concentration and Analysis of Heavy Metals Using Ligand Step Gradient Focusing in Combination with Isotachophoresis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F13%3A43908642" target="_blank" >RIV/62156489:43210/13:43908642 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10337-012-2345-y" target="_blank" >http://dx.doi.org/10.1007/s10337-012-2345-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10337-012-2345-y" target="_blank" >10.1007/s10337-012-2345-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effective Pre-Concentration and Analysis of Heavy Metals Using Ligand Step Gradient Focusing in Combination with Isotachophoresis

Popis výsledku v původním jazyce

A capillary electrophoretic method for the pre-concentration of metals based on selective focusing of metal chelates with subsequent online ITP analysis was developed and verified. The selected ions of heavy metals (Pb2+ and Cd2+) were subjected to pre-concentration from the mixture and analysed. Focusing of the metals was carried out in a ligand step gradient, which was created by the addition of a convenient ligand agent to the regular stationary pH step gradient. The metal ions were continuously dosed into the column, where they were selectively trapped (with the exception of Na+) on the stationary ligand step gradient in the form of non-moving zones of citrate complexes with an effective charge of zero. After a detectable amount of analyte was accumulated, the dosing was stopped and the accumulated zones were mobilized to the analytical column, where they were analysed by the ITP method with conductivity or photometric detection. The electrolyte systems for the dosing (mode IEF), m

Název v anglickém jazyce

Effective Pre-Concentration and Analysis of Heavy Metals Using Ligand Step Gradient Focusing in Combination with Isotachophoresis

Popis výsledku anglicky

A capillary electrophoretic method for the pre-concentration of metals based on selective focusing of metal chelates with subsequent online ITP analysis was developed and verified. The selected ions of heavy metals (Pb2+ and Cd2+) were subjected to pre-concentration from the mixture and analysed. Focusing of the metals was carried out in a ligand step gradient, which was created by the addition of a convenient ligand agent to the regular stationary pH step gradient. The metal ions were continuously dosed into the column, where they were selectively trapped (with the exception of Na+) on the stationary ligand step gradient in the form of non-moving zones of citrate complexes with an effective charge of zero. After a detectable amount of analyte was accumulated, the dosing was stopped and the accumulated zones were mobilized to the analytical column, where they were analysed by the ITP method with conductivity or photometric detection. The electrolyte systems for the dosing (mode IEF), m

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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

2013

Kód důvěrnosti údajů

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

Název periodika

Chromatographia

ISSN

0009-5893

e-ISSN

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Svazek periodika

76

Číslo periodika v rámci svazku

7-8

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

313-319

Kód UT WoS článku

000316819600003

EID výsledku v databázi Scopus

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