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Bismuth-Modified and the Native Tricresyl Phosphate-Based Carbon Paste Electrode for the Determination of Two Different Pesticides
Authors: Đorđević Jelena | Rodić Marko | Ashrafi Amirmansoor | Papp Zsigmond | Guzsvány Valéria | Trtić-Petrović Tatjana | Švancara Ivan | Vytřas Karel
Year: 2012
Type of publication: článek ve sborníku
Name of source: Sensing in Electroanalysis Vol. 7
Publisher name: Univerzita Pardubice
Place: Pardubice
Page from-to: 265-281
Titles:
Language Name Abstract Keywords
cze Bismutem modifiková uhlíková pastová elektroda s obsahem trikresyl fosfátu pro stanovení dvou různých pesticidů V tomto článku je uhlíková pastová elektroda obsahující trikresyl fosfát modifikována bismutových prachem a následně použita pro stavení dvou typů pesticidů (Carbendazimu a Imidaclopridu). bismut;, uhlíková pastová elektroda; pesticidy; trikresyl fosfát; carbendazim; imidacloprid
eng Bismuth-Modified and the Native Tricresyl Phosphate-Based Carbon Paste Electrode for the Determination of Two Different Pesticides In this article, the voltammetric responses of the bismuth powder bulk-modified tricresyl phosphate-based carbon paste electrode (Bi5%-C/TCP, where 5% is the content of pulverized metal), surface-modified, bismuth film-plated BiF-C/TCP), and the unmodified carbon paste electrode of the C/TCP type were studied and subsequently optimized for the cathodic determination of Imidacloprid (IMI), an insecticide reducible in a fairly negative potential range. The individual comparisons have shown that the determination of IMI is more efficient with the Bi5%-C/TCP or Bi20%-C/TCP, respectively, by the direct cathodic differential pulse voltammetry (DPV). Concerning the determination of Carbendazim (CBZ), a fungicide oxidizable at the positive potentials, the unmodified C/TCP was applied to the determination in the differential pulse anodic stripping voltammetric mode. The respective LODs were at the low μg mL-1 level for IMI or even down to the ng mL-1 for a more sensitive determination of CBZ. Tricresyl phosphate-based carbon paste; two bismuth-modified variants; unmodifed form; voltammetric determination; Imidacloprid (IMI); Carbendazim (CBZ)

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