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Voltammetry with carbon paste electrodes containing membrane plasticizers used for PVC-based ion-selective electrodes

✍ Scribed by Ivan Švancara; Karel Vytřas

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
775 KB
Volume
273
Category
Article
ISSN
0003-2670

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✦ Synopsis

Carbon paste electrodes were prepared by mtxmg graphite powder wtth hqmds that have been applied as plastrctxers for membranes of ion-selectrve electrodes In voltammetnc measurements, these electrodes exhrbtted mterestmg properties such as a wrde anodtc and cathodrc potentral range, very low reductron peak of oxygen m the cathodrc scan and hrgh extractron and adsorptton capabrhtres They were shown to be convement, espeaally for the selectrve accumulatron of metals m the form of thetr amomc complexes Two examples are gtven The voltammetnc behavrour of gold as its [AuCl,]-complex and of brsmuth as the [Bf,]-amon 1s drscussed Keyword Ion selectrve electrodes, Stnppmg voltammetry, Voltammetry, Brsmuth, Carbon paste electrodes, Gold, Membrane electrodes, Plastrcrxers

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## Abstract Room temperature ionic liquids (RTILs), 1‐__n__‐butyl‐3‐methylimidazolium tetrafluoroborate, [bmim]BF~4~, and multiwalled carbon nanotubes (MWCNTs) were used for improvement of a praseodymium carbon paste ion selective sensor response. [bmim]BF~4~ can be a better binder than mineral oil