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

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Effective Pre-Concentration and Analysis of Heavy Metals Using Ligand Step Gradient Focusing in Combination with Isotachophoresis
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CB - Analytical chemistry, separation
OECD FORD branch
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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
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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