Publikace detail

New possibilities of potentiometric stripping analysis based on ion-pair formation and accumulation of analyte at carbon paste electrodes

Autoři: Vytřas Karel | Konvalina Jiří

Rok: 1998

Druh publikace: článek v odborném periodiku

Název zdroje: Electroanalysis

Název nakladatele: Wiley-VCH

Místo vydání: Weinheim

Strana od-do: 787-790

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
cze	Nové možnosti v potenciometrické stripping analýze založené na iontovém párování a akumulaci analytu na uhlíkových pastových elektrodách	Nové možnosti v potenciometrické stripping analýze založené na iontovém párování a akumulaci analytu na uhlíkových pastových elektrodách
eng	New possibilities of potentiometric stripping analysis based on ion-pair formation and accumulation of analyte at carbon paste electrodes	A novel technique of potentiometric stripping analysis is based on extractive accumulation of anionic species of Lipophilic character in polar pasting liquids of carbon paste electrodes. Determinations of both gold(III) which is accumulated as tetrachloroaurate(III) and iodide (accumulated at positive potentials as a halide complex of iodine) at a carbon paste electrode containing tricresyl phosphate are given as examples. Both the anions form ion-pairs with protonated tricresyl phosphate and accumulate at the working electrode on extraction principles; the accumulation step is followed by their reduction using constant current. Similar procedures based on ion-pair formation followed by extractive accumulation could be elaborated fur many other ionic species. Thus, this may represent a new approach utilizable in potentiometric stripping analysis.	potentiometric stripping analysis;carbon paste electrodes

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