Comparison of interference in chemical, electrochemical and UV-photochemical generation methods of volatile Se species
Autor: | Eliška Nováková, Petr Rychlovský, Václav Červený, Marcela Rybínová, Jakub Hraníček |
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Rok vydání: | 2018 |
Předmět: |
Hydride
Chemistry 010401 analytical chemistry Analytical chemistry 02 engineering and technology Electrolyte 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode 0104 chemical sciences Analytical Chemistry law.invention Interference (communication) Transition metal law Phase (matter) 0210 nano-technology Spectroscopy |
Zdroj: | Journal of Analytical Atomic Spectrometry. 33:118-126 |
ISSN: | 1364-5544 0267-9477 |
Popis: | We present a comparison of interference in three methods of generation of volatile Se species to compare their performance with regard to matrix effects. The effects of selected hydride forming elements, transition metals and electrolytes are quantified and the similarities and differences between the techniques are compared for individual interferents. The possibility that Co(II), Cr(III) and Ni(II) could be used to increase the response in UV-photochemical generation of volatile Se species is discussed. It was found that the increased sensitivity in the presence of Ni(II) is not due to the increased efficiency of generation but due to processes in the gaseous phase. In general, increased Se signals resulting from modified reactions were associated with alternative vapour generation methods. Electrochemical vapour generation suffers from permanent interference effects located on the cathode, but these were not observed with chemical and UV-photochemical vapour generation. Sb(III) interfered more severely than As(III) irrespective of the method used. |
Databáze: | OpenAIRE |
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