Determination of some heavy metal cations in molten snow by transient isotachophoresis/ capillary zone electrophoresis |
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Authors: | Petr Jan Gerstmann Silke Frank Hartmut |
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Affiliation: | Environmental Chemistry and Ecotoxicology, University of Bayreuth, Bayreuth, Germany. |
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Abstract: | Online combination of transient ITP and CZE is employed for the determination of Cd(II), Pb(II), Cu(II), Ni(II), and Zn(II). Acetic acid is used for creating the transient isotachophoretic state. alpha-Hydroxyisobutyric acid and 4-aminopyridine are used as BGEs for the separation and indirect UV detection. At optimum conditions, the method allows to determine the metals at levels of 40-120 microg/L, about 50 times more sensitive than conventional CZE. In combination with a 20-fold evaporative concentration, the method is suitable for environmental monitoring of the heavy metals in snow samples. |
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Keywords: | Capillary zone electrophoresis Environmental analysis Heavy metals Snow Transient isotachophoresis |
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