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  • Carbon paste electrodes (CPEs) of various compositions were studied to elucidate the stripping voltammetric behavior of iodide. At an accumulation potential of +0.7 V (vs. Ag/AgCl), the CPE containing tricresyl phosphate as a pasting liquid was able to preconcetrate iodide effectively via ion-pairing reaction followed by oxidation to iodine and its extraction onto pasting liquid. In a supporting electrolyte containing 0.5 M NaCl and 0.1 M HCl, the reduction signal was proportional to iodide concentration from 5 x 10(-6) to 5 x 10(-7) mol/L with a detection limit of approximately 2.5 x 10(-7) mol/L (accumulation for 5 min). Other halides and pseudohalides did not interfere with the determination, except for a high concentration excess of thiocyanate and bromide (100:1). The method was tested on model solutions and was applied to determine total iodine in samples of table salts and mineral water. The results were compared to those obtained by reference methods.
  • Carbon paste electrodes (CPEs) of various compositions were studied to elucidate the stripping voltammetric behavior of iodide. At an accumulation potential of +0.7 V (vs. Ag/AgCl), the CPE containing tricresyl phosphate as a pasting liquid was able to preconcetrate iodide effectively via ion-pairing reaction followed by oxidation to iodine and its extraction onto pasting liquid. In a supporting electrolyte containing 0.5 M NaCl and 0.1 M HCl, the reduction signal was proportional to iodide concentration from 5 x 10(-6) to 5 x 10(-7) mol/L with a detection limit of approximately 2.5 x 10(-7) mol/L (accumulation for 5 min). Other halides and pseudohalides did not interfere with the determination, except for a high concentration excess of thiocyanate and bromide (100:1). The method was tested on model solutions and was applied to determine total iodine in samples of table salts and mineral water. The results were compared to those obtained by reference methods. (en)
  • Stanovení jodidů s využitím kombinovaného mechanismu akumulace na uhlíkové pastové elektrodě metodou stripping voltametrie (cs)
Title
  • Stanovení jodidů s využitím kombinovaného mechanismu akumulace na uhlíkové pastové elektrodě metodou stripping voltametrie (cs)
  • Stripping voltammetric determination of iodide with synergistic accumulation at a carbon paste electrode
  • Stripping voltammetric determination of iodide with synergistic accumulation at a carbon paste electrode (en)
skos:prefLabel
  • Stanovení jodidů s využitím kombinovaného mechanismu akumulace na uhlíkové pastové elektrodě metodou stripping voltametrie (cs)
  • Stripping voltammetric determination of iodide with synergistic accumulation at a carbon paste electrode
  • Stripping voltammetric determination of iodide with synergistic accumulation at a carbon paste electrode (en)
skos:notation
  • RIV/00216275:25310/98:00003868!RIV06-MSM-25310___
http://linked.open.../vavai/riv/strany
  • 435-441
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(OE37/1)
http://linked.open...iv/cisloPeriodika
  • 6
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 785339
http://linked.open...ai/riv/idVysledku
  • RIV/00216275:25310/98:00003868
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • stripping voltametric determination of iodide; carbon paste electrode (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV
  • [D8966C24EB3C]
http://linked.open...i/riv/nazevZdroje
  • Electroanalysis
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 10
http://linked.open...iv/tvurceVysledku
  • Vytřas, Karel
  • Švancara, Ivan
  • Kalcher, K.
  • Konvalina, Jiří
  • Schachl, K.
issn
  • 1040-0397
number of pages
http://localhost/t...ganizacniJednotka
  • 25310
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