Selective, sensitive and economical method for the adsorptive voltammetric determination of trace amounts of Mo(VI) in organic matter rich environmental samples

Grabarczyk, Malgorzata; Koper, Anna

doi:10.1016/j.talanta.2011.01.057

Cited by 17 publications

(12 citation statements)

References 46 publications

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“…The results showed that Triton X‐100, SDS and CTAB at concentration of 50 µg mL −1 , does not affect the voltammetric signal. In this study, the tolerance limit of EDTA was 10 µg mL −1 which was higher than maximal EDTA concentration in waste water according to the World Heath Organization (WHO) report 41.…”

Section: Resultsmentioning

confidence: 65%

Design and Construction of a New Modified Screen‐Printed Sensor for Voltammetric Determination of Molybdenum(VI) Ions

Sadeghi

Garmroodi

2012

Electroanalysis

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The development of a new electrochemical sensor for determination of trace molybdenum, based on cupferron‐tetraphenylborate ion‐pair drop coated modified screen‐printed carbon electrode (Cup‐SPCE) is described. The printing inks, printing device, substrate and all used materials for making the sensor were prepared as homemade. Under the optimum conditions, the analytical calibration curve was found bimodal with linear concentration ranges from 5 to 200 ng mL−1 and from 200 to 2000 ng mL−1. The detection limit of the method in the concentration of 5–200 ng mL−1 was found to be 2.5 ng mL−1. The method was successfully applied for the determination of Mo(VI) in drinking water samples.

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Section: Resultsmentioning

confidence: 65%

Design and Construction of a New Modified Screen‐Printed Sensor for Voltammetric Determination of Molybdenum(VI) Ions

Sadeghi

Garmroodi

2012

Electroanalysis

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“…It was proven in earlier papers that a simple, cheap and quick way to eliminate the interferences of organic substances in voltammetric determination is previous mixing of the analyzed sample with Amberlite XAD-7 resin [7][8][9][10][11]. Furthermore, in the case of the present procedure the addition to the sample of XAD-7 resin to allow elimination of the above-mentioned interferences was proposed.…”

Section: Analytical Applicationmentioning

confidence: 92%

“…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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“…The viable alternative to these techniques are electrochemical methods, especially adsorptive stripping voltammetry (AdSV) which provides very low detection limit, good selectivity, and above all, direct determination without the need for application of additional procedures of separation and preconcentration. In the last years, multiple AdSV procedures have been developed for the determination of molybdenum using different complexing agents such as alizarin S [16][17][18], chloranilic acid [19][20][21][22][23][24], cupferron [20,24,25], 1,10phenanthroline [26], oxine [27,28], α-benzoinoxime [29], morin [30], quercetin [31], tiron [32], pyrogallol red [33], pyrocatechol violet [34], chromoxane cyanine R [35], 2-(2benzothiazolylazo) p-cresol [36], dihydroxynaphthalene [37], and methyl thymol blue [38].…”

Section: Introductionmentioning

confidence: 99%

“…In the works in which the problem related to the presence of organic substances was taken into account, it was suggested that in order to eliminate interferences from organic substances, pre-mineralization of the samples by UV irradiation or acid etching in combination with heating before the determination should be performed [18,19,[35][36][37]. The authors of some other works proposed the use of Amberlite XAD-7 resin for the same purpose [20,23].…”

Section: Introductionmentioning

confidence: 99%

Combination of PbFE as an electrochemical sensor and cupferron as a complexing agent for the rapid determination of Mo(VI)

Adamczyk

Grabarczyk

2020

Ionics

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An analytical procedure regarding the trace determination of molybdenum in natural water samples by adsorptive stripping voltammetry (AdSV) using the in situ plated lead film electrode (PbFE) was described. The method is based on adsorptive accumulation of the Mo(VI)-cupferron complex at the PbFE surface. The optimum analytical conditions include the supporting electrolyte containing 0.2-mol L −1 acetic buffer pH = 5.3, 1.45 × 10 −4-mol L −1 Pb(II), and 2.0 × 10 −4-mol L −1 cupferron. A linear response of Mo(VI) in the concentration range of 3.0 × 10 −8 to 1.0 × 10 −6 mol L −1 (r = 0.997) was obtained with detection limit of 9.0 × 10 −9 mol L −1 using accumulation time of 50 s. The selectivity of the method was determined by investigating how the presence of foreign ions affects the determination of molybdenum. The interferences of surface-active substances and humic substances on the molybdenum voltammetric signal were precisely examined and effectively minimized by preliminary mixing with Amberlite XAD-7 resin. The application of the proposed procedure to the analysis of natural water samples was validated by the determination of molybdenum in certificate reference materials SPS-SW1 surface water, Bystrzyca river, tap, and mineral water.

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Selective, sensitive and economical method for the adsorptive voltammetric determination of trace amounts of Mo(VI) in organic matter rich environmental samples

Cited by 17 publications

References 46 publications

Design and Construction of a New Modified Screen‐Printed Sensor for Voltammetric Determination of Molybdenum(VI) Ions

Design and Construction of a New Modified Screen‐Printed Sensor for Voltammetric Determination of Molybdenum(VI) Ions

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

Combination of PbFE as an electrochemical sensor and cupferron as a complexing agent for the rapid determination of Mo(VI)

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