About: Electro-chemical Stripping Analysis of Selected Heavy Metals at Antimony Trioxide-Modified Carbon Paste Electrode     Goto   Sponge   NotDistinct   Permalink

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  • Antimony trioxide-modified carbon paste electrode (Sb2O3-CPE) was developed and tested in combination with square-wave anodic stripping voltammetry as a new %22mercury-free%22 sensor for the determination of selected heavy metal ions at the low ug L-1 concentration level. Measurements were carried out using non-deaerated solutions of 0.01 M HCl (pH 2) with Cd(II) + Pb(II) as model ions. Several important experimental parameters, e.g. deposition potential, deposition time, and the concentration of hydrochloric acid were studied and optimized, when the electroanalytical performance of the Sb2O3-CPE was critically compared with bismuth trioxide-modified carbon paste electrode (Bi2O3-CPE), and with the in-situ prepared antimony film carbon paste electrode (SbF-CPE) using either 0.01 M HCl (pH 2.0) or 0.1 M CH3COOH + CH3COONa (pH 4.4) as the supporting media. In contrast to other configurations of antimony film-operated electrodes, the Sb2O3-CPE has exhibited well-defined anodic stripping signals also in acetate buffer, proving thus itself to be generally applicable in both mild and more acidic supporting media. The sensor of interest showed a fairly linear behaviour in the concentration range of 10-100 mýg L-1, offering good reproducibility and favourable detection limits of about 1 mýg L-1 for Cd(II) and of 0.7 mýg L-1 Pb(II) in combination with 90 s accumulation. The practical applicability of the Sb2O3-CPE, when the electrode could also be applied in the stripping chronopotentiometric operating mode (with chemical oxidation), was demonstrated on the voltammetric determination of Cd(II) and Pb(II) in sample of tap water
  • Antimony trioxide-modified carbon paste electrode (Sb2O3-CPE) was developed and tested in combination with square-wave anodic stripping voltammetry as a new %22mercury-free%22 sensor for the determination of selected heavy metal ions at the low ug L-1 concentration level. Measurements were carried out using non-deaerated solutions of 0.01 M HCl (pH 2) with Cd(II) + Pb(II) as model ions. Several important experimental parameters, e.g. deposition potential, deposition time, and the concentration of hydrochloric acid were studied and optimized, when the electroanalytical performance of the Sb2O3-CPE was critically compared with bismuth trioxide-modified carbon paste electrode (Bi2O3-CPE), and with the in-situ prepared antimony film carbon paste electrode (SbF-CPE) using either 0.01 M HCl (pH 2.0) or 0.1 M CH3COOH + CH3COONa (pH 4.4) as the supporting media. In contrast to other configurations of antimony film-operated electrodes, the Sb2O3-CPE has exhibited well-defined anodic stripping signals also in acetate buffer, proving thus itself to be generally applicable in both mild and more acidic supporting media. The sensor of interest showed a fairly linear behaviour in the concentration range of 10-100 mýg L-1, offering good reproducibility and favourable detection limits of about 1 mýg L-1 for Cd(II) and of 0.7 mýg L-1 Pb(II) in combination with 90 s accumulation. The practical applicability of the Sb2O3-CPE, when the electrode could also be applied in the stripping chronopotentiometric operating mode (with chemical oxidation), was demonstrated on the voltammetric determination of Cd(II) and Pb(II) in sample of tap water (en)
Title
  • Electro-chemical Stripping Analysis of Selected Heavy Metals at Antimony Trioxide-Modified Carbon Paste Electrode
  • Electro-chemical Stripping Analysis of Selected Heavy Metals at Antimony Trioxide-Modified Carbon Paste Electrode (en)
skos:prefLabel
  • Electro-chemical Stripping Analysis of Selected Heavy Metals at Antimony Trioxide-Modified Carbon Paste Electrode
  • Electro-chemical Stripping Analysis of Selected Heavy Metals at Antimony Trioxide-Modified Carbon Paste Electrode (en)
skos:notation
  • RIV/00216275:25310/12:39895277!RIV13-MSM-25310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, P(LC06035), P(MEB091139)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 133884
http://linked.open...ai/riv/idVysledku
  • RIV/00216275:25310/12:39895277
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Carbon paste electrode; Antimony trioxide; Heavy etals; Stripping analysis (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CS - Státní svaz Srbska a Černé Hory
http://linked.open...ontrolniKodProRIV
  • [04E7C0F9FA05]
http://linked.open...i/riv/nazevZdroje
  • International Journal of Electrochemical Science
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
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http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 7
http://linked.open...iv/tvurceVysledku
  • Baldrianová, Lucie
  • Svobodová, Eva
  • Švancara, Ivan
  • Hočevar, Samo B.
http://linked.open...ain/vavai/riv/wos
  • 000302723700016
issn
  • 1452-3981
number of pages
http://localhost/t...ganizacniJednotka
  • 25310
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