Simultaneous voltammetric determination of antimony, copper, lead, and tin in steel using a hydrochloric acid–isopropanolic medium

Hofbauerová, Helena; Labuda, Ján; Fišera, Miroslav; Vaníčková, M.

doi:10.1002/elan.1140070821

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…In the case of high excess of the interfering component and a relatively low performance of the separation step the S, was 20 to 50 % which is insufficient for the resolution and evaluation of the analyte peak. The procedure was applied to the determination of antimony in steel with 13.9ppm of Sb and 313.4ppm of Cu [21]. In this case, the cation-excange resin was separated and the solution acidified to 1.5 M HCI before the DPASV determination.…”

Section: Ion Exchange Voltammetrymentioning

confidence: 99%

Selectivity of hybrid voltammetric determinations

Lubuda

Vaníčková

1996

Electroanalysis

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The selectivity of solvent extraction voltammetry and ion-exchange voltammetry hybrid procedures has been investigated. The equations for the prediction of the selectivity value according to the extraction constants or distribution coefficients of the analyte and interfering component were obtained. Their verification and application at the determination of trace metals in model and real samples are presented.

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Section: Ion Exchange Voltammetrymentioning

confidence: 99%

Selectivity of hybrid voltammetric determinations

Lubuda

Vaníčková

1996

Electroanalysis

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“…It includes anodic stripping voltammetry (ASV) at mercury, [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Only a few papers have been published to date on the stripping voltammetric determination of antimony in steels. [33][34][35] Wang et al 33 and Hofbauerova et al 34 used ASV at mercurybased electrodes in a hydrochloric acid-alcohol medium for the determination of antimony in steels. Zhou et al 35 developed 1.5th-order derivative linear-sweep adsorptive stripping voltammetry of antimony(III) complexed with morin (2′,3,4′,5,7-pentahydroxyflavone) at a static mercury drop electrode.…”

mentioning

confidence: 99%

“…[33][34][35] Wang et al 33 and Hofbauerova et al 34 used ASV at mercurybased electrodes in a hydrochloric acid-alcohol medium for the determination of antimony in steels. Zhou et al 35 developed 1.5th-order derivative linear-sweep adsorptive stripping voltammetry of antimony(III) complexed with morin (2′,3,4′,5,7-pentahydroxyflavone) at a static mercury drop electrode.…”

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confidence: 99%

Determination of Antimony in Steel by Differential Pulse Anodic Stripping Voltammetry at a Rotating Gold Film Electrode

2000

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The accurate determination of antimony in steel is important to the steel industry, because grain boundary segregation of antimony causes the decrease in toughness of steel owing to the temper embrittlement. Spectrometric methods 1,2 are commonly used for the determination of antimony in iron and steel, but they require a preconcentration procedure, which generally involves much skill, labor or time, and the use of toxic organic solvents such as toluene, 1 to avoid any interference from iron matrix. Furthermore, the methods exhibit poor sensitivity.Stripping voltammetry is a powerful electroanalytical technique for the determination of trace antimony and has been extensively applied in studying antimony in various samples. It includes anodic stripping voltammetry (ASV) at mercury, [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Only a few papers have been published to date on the stripping voltammetric determination of antimony in steels. [33][34][35] Wang et al. 33 and Hofbauerova et al. 34 used ASV at mercurybased electrodes in a hydrochloric acid-alcohol medium for the determination of antimony in steels. Zhou et al. 35 developed 1.5th-order derivative linear-sweep adsorptive stripping voltammetry of antimony(III) complexed with morin (2′,3,4′,5,7-pentahydroxyflavone) at a static mercury drop electrode. However, those methods involve a troublesome procedure such as filtration or require a time-consuming and laborious standard additions method because of removing interferences from coexisting elements. Furthermore, mercury, which is toxic and difficult to use, is employed exclusively as the working electrode.The present paper describes a simple, rapid and accurate method for the direct determination of antimony at trace levels in steel based on ASV of antimony(III) at a gold film electrode without any preconcentration step. Experimental ApparatusVoltammetric determinations were performed using a BAS-50W electrochemical analyzer with an RDE-1 rotating disk electrode (Bioanalytical Systems, West Lafayette, IN, USA) and a BJC-240J printer (Canon, Tokyo, Japan). A platinum wire was used as a counter electrode. A saturated calomel reference electrode (SCE) was connected to a glass voltammetric cell (25 mm×22 mmφ) by a 4% agar-saturated potassium nitrate bridge. ReagentsKanto Chemicals "Ultrapure" grade mineral acids were used throughout, and other chemicals were of analytical-grade without further purification. Water was distilled from a vitreous silica sub-boiling still. An acid mixture solution was prepared by mixing one volume of 10 mol dm -3 nitric acid and one volume of 10 mol dm -3 sulfuric acid. Standard antimony(III) solutions were prepared daily by diluting a commercially available stock standard solution (1 mg cm -3 of animony(III) in 2.5 mol dm -3 hydrochloric acid) to the desired concentration with the acid mixture solution. Preparation of gold plated glassy-carbon electrodeThe surface (7 mm 2 area) of a glassy carbon disk electrode (Bioanalytical Systems) was polished to a mirror fin...

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Piecewise Direct Standardization Method Applied to the Simultaneous Determination of Pb(II), Sn(IV) and Cd(II) by Differential Pulse Polarography

Herrero

Ortiz

1998

Electroanalysis

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A partial least squares (PLS) regression has been used to carry out the simultaneous determination of Pb II , Sn IV and Cd II by differential pulse polarography (DPP) because overlapping peaks exist. But this multivariate regression requires the measurement of a large number of calibration samples, so a standardization procedure, the piecewise direct standardization (PDS) method, has been used in order to reduce the experimental effort that will be necessary in later analysis. The number of calibration samples has been reduced by about 60 %, the results being comparable to those obtained with a full recalibration.

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Simultaneous voltammetric determination of antimony, copper, lead, and tin in steel using a hydrochloric acid–isopropanolic medium

Cited by 10 publications

References 7 publications

Selectivity of hybrid voltammetric determinations

Selectivity of hybrid voltammetric determinations

Determination of Antimony in Steel by Differential Pulse Anodic Stripping Voltammetry at a Rotating Gold Film Electrode

Piecewise Direct Standardization Method Applied to the Simultaneous Determination of Pb(II), Sn(IV) and Cd(II) by Differential Pulse Polarography

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