Separation and determination of tin by liquid-solid chromatography

“…The absorbance of metal chloride complexes in the ultraviolet spectral region has been used extensively to automatically detect metal ions in liquid chromatography [27][28][29][30]. The absorption wavelength maxima of the metal chloride complexes are shown in Table 4.3.…”

Section: Direct Spectrophotometric Measurementmentioning

confidence: 99%

Detectors

2009

Ion Chromatography

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71 Conductivity Detectorsanion-exchange column (with a high pH eluent), it is only possible to detect the stronger acid, arsenate, by suppressed conductivity, and is not possible to detect the weak acid, arsenite. Other anions that cannot be detected by suppressed conductivity detection include borate, silicate and cyanide. Nonsuppressed, single-column methods, selective detection, or post-column reaction methods are required for the detection of salts of weak acids. Table 4.1 Limiting equivalent ionic conductances in aqueous solution at 25°C. (Units: S cm 2 equiv -1 ) Anions k -Cations k +

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“…Many procedures for the determination of tin have been described in the literature. The techniques used for the determination of tin include atomic absorption spectroscopy, [6] spectrophotometry, [7] spectrofluorimetry, [8] atomic emission spectrometry, [9] inductively coupled plasma-optical emission spectroscopy (ICP-OES), [10] inductively coupled plasma-mass spectrometry (ICP-MS), [11] fluorescence, [12] liquid-solid chromatography, [13] chemiluminescence, [14] potentiometry, [15] polarography, [16] amperometry, [17] and voltammetry. [18][19][20][21][22][23][24] Voltammetry is an electrochemical technique that measures the change in current as a function of the change in electrode potential.…”

Section: Introductionmentioning

confidence: 99%

Stripping Voltammetry with Nanomaterials‐based Electrode in the Environmental Analysis of Trace Concentrations of Tin

Grabarczyk,

Wlazłowska,

Wawruch

2023

ChemPhysChem

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A method for the voltammetric determination of tin using a multiwall carbon nanotubes/spherical glassy carbon (CNTs/SGC) electrode is described. The new procedure is based on the adsorptive accumulation of the Sn(II)−cupferron complex on a CNTs/SGC electrode modified with a lead film, followed by electrochemical reduction of the adsorbed species. The optimal experimental conditions include the use of 0.10 mol L−1 acetate buffer (pH 5.7), 4.0 × 10−4 mol L−1 cupferron and 1.0 × 10−4 mol L−1 Pb(II). The peak current is proportional to the concentration of Sn(II) over the range of 1.0 × 10−9 − 1.0 × 10−7 mol L−1 and the detection limit is 3.1 × 10−10 mol L−1 for a 95 s accumulation time. The proposed method was used to determine tin in real samples and certified reference materials.

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Separation and determination of tin by liquid-solid chromatography

Cited by 17 publications

References 21 publications

Separation of metal ions using a hexylthioglycolate resin

Separation of metal ions using a hexylthioglycolate resin

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Stripping Voltammetry with Nanomaterials‐based Electrode in the Environmental Analysis of Trace Concentrations of Tin

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