Construção e aplicação de um minissensor de filme de bismuto utilizando materiais de baixo custo para determinações voltamétricas in loco

Figueiredo-Filho, Luiz C. S.; Janegitz, Bruno C.; Faria, Ronaldo C.; Fatibello‐Filho, Orlando; Marcolino‐Júnior, Luiz H.; Caetano, Fábio R.; Mattos, Ivanildo Luiz de

doi:10.1590/s0100-40422012000500027

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…1 and has been reported previously by the Fatibello-Filho group. 39 Note however in the previous work we only presented the sensors construction and did not fully explore its analytical utility.…”

Section: Copper Mini-sensor Constructionmentioning

confidence: 99%

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Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry

et al. 2013

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The fabrication and evaluation of a disposable copper mini-sensor ex situ modified bismuth film for the sensing of lead(II) and cadmium(II) via square-wave anodic stripping voltammetry (SWASV) is presented.The sensor was ex situ modified with a bismuth film via electro-deposition through applying a potential of À0.18 V vs. Ag/AgCl (3.0 mol L À1 KCl) for 200 seconds in a 0.02 mol L À1 Bi(NO 3 ) 3 , 0.15 mol L À1 sodium citrate in 1.5 mol L À1 HCl solution. Under the optimal experimental conditions, the voltammetric response was linearly dependent on the analyte concentrations over the range from 1.3 Â 10 À6 to 1.3 Â 10 À5 mol L À1 and from 9.9 Â 10 À7 to 1.2 Â 10 À5 mol L À1 with a limit of detection of 8.3 Â 10 À7 mol L À1 and 5.3 Â 10 À7 mol L À1 for Pb(II) and Cd(II), respectively. The determination of both toxic metallic species was carried out in natural waters using the sensor obtaining results which are in close agreement with those obtained using Flame Atomic Absorption Spectrometry at a 95% confidence level.

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Section: Copper Mini-sensor Constructionmentioning

confidence: 99%

“…The electrodes were prepared using the toner transfer method and polyester paper. 39 The same procedure has been adopted for print circuit boards (PCB) construction. A fabrication scheme is depicted in Fig.…”

Section: Copper Mini-sensor Constructionmentioning

confidence: 99%

Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry

et al. 2013

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“…The mercury electrode is probably still the best alternative as a material for sequential analysis because it ensures a renewable electrode surface, leading to reproducible Methods that are comparable to AAS, ICP‐AES or ICP‐MS. Solid electrodes provide measurements with low reproducibility because of difficulties in reproducing an adequate surface for the determinations 26. Moreover, the polishing process for solid electrode surfaces is prolonged, meaning good and reproducible results cannot be guaranteed in complex matrices, some of which contain high levels of organic compounds.…”

Section: Introductionmentioning

confidence: 99%

Sequential Determination of 13 Elements in Complex Matrices by Stripping Voltammetry with Mixed Complexing Electrolytes

et al. 2015

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This paper presents the determination of 13 elements in a simultaneous and sequential analysis using solochrome violet (SVRS), chloranilic acid (CA), diethylenetriaminepentaacetic acid (DTPA), dimethylglyoxime (DMG), and oxine as complexing electrolytes. The Methods were applied to determine Al3+, Fe3+, Mo6+, Zn2+, Cd2+, Pb2+, Cu2+, Ni2+, Co2+, Tl+, U6+, V5+, and Cr6+ in fertilizers, plant materials, and foodstuffs. The Method was found to be selective and accurate (82.13–119.03 %) for elemental analysis in complex matrices that were previously submitted to a total oxidative digestion step (calcination and wet digestion). Mutual interferences of the elements were systematically investigated. The Sequential Method could be useful for the routine quality control of foodstuffs and fertilizer formulations regarding mineral nutrients or contaminants.

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A novel platform of using copper (II) complex with triazole-carboxilated modified as bidentated ligand SPCE for the detection of hydrogen peroxide in milk

Quezada

Martinez

Nelson

et al. 2020

Journal of Electroanalytical Chemistry

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Construção e aplicação de um minissensor de filme de bismuto utilizando materiais de baixo custo para determinações voltamétricas in loco

Cited by 4 publications

References 32 publications

Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry

Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry

Sequential Determination of 13 Elements in Complex Matrices by Stripping Voltammetry with Mixed Complexing Electrolytes

A novel platform of using copper (II) complex with triazole-carboxilated modified as bidentated ligand SPCE for the detection of hydrogen peroxide in milk

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