Determination of trace amounts of Ga(III) by adsorptive stripping voltammetry with in situ plated bismuth film electrode

Grabarczyk, Malgorzata; Wasąg, Joanna

doi:10.1016/j.talanta.2015.07.083

Cited by 33 publications

(27 citation statements)

References 39 publications

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“…Due to the mercury toxicity used in HMDE, alternative electrodes that use less Hg or mercury free, such as amalgam electrodes, mercury film and bismuth film electrodes have been developed. Electrochemical properties similar to those of HMDE are characteristics of these electrodes, which are used in electrochemical determinations of organic and inorganic compounds . Nevertheless, the HMDE has grate electrochemical properties and a new electrochemical surface is generated in each measurement, avoiding poisoning and reproducibility problems.…”

Section: Introductionmentioning

confidence: 84%

Determination of Diazepam and Clonazepam in Natural Water – a Voltammetric Study

2017

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The differential pulse adsorptive cathodic stripping voltammetry (DP-AdsCSV) employing the hanging mercury drop electrode (HMDE) was used towards the determination of two psychotropic drugs in environmental samples. Voltammetric and experimental conditions to Clonazepam (CLO) and diazepam (DIAZ) were optimized and the methods were in-house validated. Accumulation potentials were À0.3 V to CLO and À0.6 V to DIAZ at 120 s of accumulation time. Pulse amplitude, pulse time and scan rate were 80 mV, 20 ms and 25 mV s À1to CLO and 100 mV, 20 ms and 40 mV s À1 to DIAZ, respectively. Recovery tests were done in three different concentrations to evaluate methods' accuracy and the results were from 88 AE 6 to 120 AE 13 %. In precision tests, standard deviations were lower than 15 % for both methods. Goods limits of quantification 0.65 and 0.27 mg L À1 to CLO and DIAZ respectively were achieved without pre-concentration steps such as SPE, etc. Voltammetry employing HMDE was first used for the determination of CLO and DIAZ in natural water. Natural samples were spiked and recovery tests confirmed the applicability of the methods developed. Nine samples from Parana state, Brazil, were analyzed and CLO and DIAZ values were below the limits of detection in all samples.

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Section: Introductionmentioning

confidence: 84%

Determination of Diazepam and Clonazepam in Natural Water – a Voltammetric Study

2017

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“…In the case of analysis of environmental samples with organic-rich matrices the preliminary mixing with Amberlite XAD-7 resin was applied before analysis. The mixing with Amberlite XAD-7 resin, gives a superb effect as concerns the elimination of organic matrix interferences [7][8][9][10][11]. In this case, 0.5 g of resin was added to the sample solution with 4.5 cm 3 environmental water, 5 cm 3 triply distilled water, 0.5 cm 3 supporting electrolyte (CH 3 COOH) and proper concentration of 1•10 -4 mol/dm 3 Tytanit solution.…”

Section: Sample Preparationmentioning

confidence: 99%

The determination of titanium contained in Tytanit biostimulant employed to improve crops performance in natural environmental samples

Wasąg

Grabarczyk

2017

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<p>The purpose of this work was to determinate the amount of titanium in different environmental water samples spiked with crop biostimulant Tytanit. The measurements were conducted using adsorptive stripping voltammetry (AdSV). The titanium complex with chloranilic acid was accumulated on mercury film silver based electrode (Hg(Ag)FE) at the potential -0.3 V. The analysis of natural water samples enriched with Tytanit, collected in the eastern part ofPolandconfirms that this procedure is fast and essential for the determination of titanium in environmental water samples.</p>

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“…In addition, different types of electrodes were proposed, starting from hanging mercury drop electrode HMDE which might be described by excellent performance but is less common nowadays due to mercury toxicity and its impact on environment. In the meanwhile, new generation of eco‐friendly electrodes have been developed, like for example platinum or gold electrodes, modified glassy carbon electrodes and finally film electrodes (covered with mercury, bismuth, lead, gallium) . The electrode which belongs to the last group is cyclic renewable mercury (amalgam) film electrode Hg(Ag)FE applied in this work.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive AdSV Method for Fe(III) Determination in Presence of Solochrome Violet RS on Renewable Amalgam Film Electrode

2019

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The new DP AdSV method for high sensitive Fe(III) determination in the presence of Solochrome Violet RS was developed. The use of an innovative renewable amalgam film electrode Hg(Ag)FE allowed to obtain high sensitivity and significantly minimize the mercury consumption. The best results were obtained for surface area of Hg(Ag)FE equal to 11.8 mm2. Instrumental parameters were optimized. The optimal results were obtained using differential pulse technique for the following values: sampling and waiting time ts=tw=10 ms, step potential Es=5 mV, pulse amplitude ΔE=50 mV. Measurements were conducted in 0.05 M acetate buffer (pH 5.6), the concentration of SVRS was equal to 5 μM. Deposition step was carried out at the potential −400 mV for 20 s. Calculated detection limit for 40 s preconcentration time was equal to 1.4 nM (78 ng L−1). The influence of the common in environment, organic and inorganic interferences was studied. The developed method for Fe(III) determination was successfully applied and validated by investigation of certified reference material SPS‐SW2 Batch 118 and recovery of Fe(III) from various spiked samples as snow, tap water and bottom sediments. The repeatability (for 50 nM of Fe(III)) of the developed method expressed as CV was equal 3.1 % (n=5).

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Determination of trace amounts of Ga(III) by adsorptive stripping voltammetry with in situ plated bismuth film electrode

Cited by 33 publications

References 39 publications

Determination of Diazepam and Clonazepam in Natural Water – a Voltammetric Study

Determination of Diazepam and Clonazepam in Natural Water – a Voltammetric Study

The determination of titanium contained in Tytanit biostimulant employed to improve crops performance in natural environmental samples

Highly Sensitive AdSV Method for Fe(III) Determination in Presence of Solochrome Violet RS on Renewable Amalgam Film Electrode

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