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Krause CH, Schneider AB, Kolling L, de Morais PHSR, da Silva MM. How to overcome the difficulty in assaying Ni in biodiesel samples? Extraction induced by microemulsion breaking and square wave adsorptive stripping voltammetry could be the answer. Talanta 2024; 272:125776. [PMID: 38428129 DOI: 10.1016/j.talanta.2024.125776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/11/2023] [Accepted: 02/08/2024] [Indexed: 03/03/2024]
Abstract
Herein, a simple, green, and relatively inexpensive approach to determine nickel (Ni) in biodiesel samples by square wave adsorptive cathodic stripping voltammetry (SWAdCSV) is presented. A method based on the accumulation of Ni as Ni(II)-dimethylglyoxime (Ni(II)(HDMG)2) on the glassy carbon electrode was carried out in a solution containing the aqueous phase extract (APhEx) obtained from an extraction induced by microemulsion breaking (EIMB), which was achieved by adding a few microliters of ultrapure water to a microemulsion composed of biodiesel, n-propanol and a diluted HNO3 solution. The LOD and LOQ were 0.2 μg L-1 and 0.8 μg L-1, respectively, and the accuracy was evaluated by recovery assays of spiked samples and by analyzing a standard reference material. Results obtained from a comparative method (HR-CS GF AAS) were also used for this evaluation. The method was applied to biodiesel samples produced from different feedstocks. To the best of the authors knowledge, it is the first time that: 1) Ni in biodiesel is determined by a voltammetric method; 2) EIMB is applied to extract Ni from this matrix and 3) this type of sample preparation method is used with adsorptive stripping voltammetry.
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Affiliation(s)
- Cristian H Krause
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Alexandre B Schneider
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil.
| | - Leandro Kolling
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Pedro H S R de Morais
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil
| | - Marcia M da Silva
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil
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Krause CH, Schneider AB, Kolling L, Oliveira LTT, da Silva MM. A simple, fast and inexpensive approach to quantify low concentrations of iron in biodiesel by voltammetry after extraction induced by microemulsion breaking. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024. [PMID: 38682647 DOI: 10.1039/d4ay00342j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
An alternative approach to assay iron (Fe) in biodiesel by differential pulse adsorptive cathodic stripping voltammetry (DPAdCSV) is presented herein. The sample treatment involved a simple, rapid, but effective extraction of Fe from biodiesel into an aqueous phase after microemulsion (ME) breaking. Then, Fe was determined as the complex Fe(III)-PAN (1-(2-pyridylazo)-2-naphthol) on a glassy carbon electrode (GCE) in the presence of bismuth (Bi(III)). The extraction induced by microemulsion breaking (EIMB) was achieved by adding 0.80 mL of ultrapure water into a water-in-oil ME containing 7.00 mL biodiesel, 2.70 mL n-propanol and 0.30 mL of 0.25 mol L-1 HNO3 solution. No deliberate addition of surfactant was necessary to form and maintain the ME. The EIMB resulted in a 1.30 mL lower aqueous phase extract (APhEx) and an upper oily phase. DP voltammograms were recorded with a portable potentiostat, showing the potentiality of carrying out the determination out of a central laboratory. Another feature was the non-necessity of deaerating the solution to eliminate the dissolved O2. The limits of detection (LOD) and quantification (LOQ) were 1.7 μg L-1 (140 mg kg-1) and 5.5 μg L-1 (455 mg kg-1), respectively. The accuracy of the method was evaluated by recovery assays of spiked samples, by analyzing a standard reference material and by comparisons with high-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GF AAS).
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Affiliation(s)
- Cristian H Krause
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil.
| | - Alexandre B Schneider
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil.
| | - Leandro Kolling
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil.
| | - Lauren T T Oliveira
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil.
| | - Márcia M da Silva
- Instituto de Química, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, C.P. 15003, 91501-970, Porto Alegre, RS, Brazil.
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Tesfaye E, Chandravanshi BS, Negash N, Tessema M. Electrochemical determination of zinc(II) using N 1-hydroxy-N 1,N 2-diphenylbenzamidine and multi-walled carbon nanotubes modified carbon paste electrode. Heliyon 2023; 9:e17346. [PMID: 37383216 PMCID: PMC10293732 DOI: 10.1016/j.heliyon.2023.e17346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023] Open
Abstract
In this study, a new carbon paste electrode modified with a laboratory-synthesized ligand, N1-hydroxy-N1,N2-diphenylbenzamidine (HDPBA) and multi-walled carbon nanotubes (MWCNTs) (HDPBA‒MWCNTs/CPE) has been developed. The modified electrode was applied for preconcentration and voltammetric determination of zinc ions (Zn(II)) by square wave anodic stripping voltammetry (SWASV). The preconcentration of Zn(II) on the electrode surface was performed in 0.1 M Brinton Robinson (B-R) buffer solution (pH 6) at an applied potential of -1.30 V versus Ag/AgCl for 120 s, followed by stripping in the positive potential scan of the SWASV after a quit time of 10 s. Under optimized experimental conditions, the proposed electrode exhibited a wider linear dynamic response for Zn(II) in a concentration range of 0.02-10.00 μM with a detection limit of 2.48 nM. This is due to the excellent metal-chelation property of the ligand, and the good conductivity and large surface area of MWCNTs which significantly improved the sensing performance of the nanocomposite modified electrode. The selectivity of the electrode was studied by evaluating the interference effects of various foreign ions on the peak current of Zn(II). The method exhibited high reproducibility with a relative standard deviation (RSD) of 3.1%. The present method was applied for the determination of zinc ions in water samples. The recovery values in the tested samples were found to be 98.50-106.0%, indicating a good accuracy of the proposed electrode. Furthermore, the electrochemical behavior of HDPBA in acetonitrile and aqueous solutions has been studied.
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UTAGAWA Y, ITO K, INOUE KY, NASHIMOTO Y, INO K, SHIKU H. Electrochemical Substrates and Systems for Enzyme-Based Bioassays. BUNSEKI KAGAKU 2022. [DOI: 10.2116/bunsekikagaku.71.109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Kentaro ITO
- Graduate School of Environmental Studies, Tohoku University
| | - Kumi Y. INOUE
- Center for Basic Education, Faculty of Engineering, Graduate Faculty of Interdisciplinary Research, University of Yamanashi
| | - Yuji NASHIMOTO
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University
| | - Kosuke INO
- Graduate School of Engineering, Tohoku University
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Bismuth-Chitosan Nanocomposite Sensors for Trace Level Detection of Ni(II) and Co(II) in Water Samples. WATER 2022. [DOI: 10.3390/w14030302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Trace minerals play an essential role in methane production via anaerobic digestion (AD). It is important to monitor Ni(II) and Co(II) concentrations and the Ni/Co concentration ratio for the rapid diagnosis of the ecological status or activity of methanogens in AD. Electrochemical detection of Ni(II) and Co(II) was investigated by coating the Bi-chitosan nanocomposite on a glassy carbon electrode (GCE) via the electrodeposition technique. A square-wave adsorptive cathodic stripping voltammetry technique (SWAdCSV) was applied and optimized when dimethylglyoxime (DMG) was used as the chelating agent for Ni(II) and Co(II) measurements. The SWAdCSV results showed that the current peaks for Co(II) detection are 6.1 times greater than the current peaks for Ni(II) measurements, probably due to the different affinity of DMG molecules between Ni(II) and Co(II). DMG molecules demonstrated higher selectivity toward Co(II) cations compared to Ni(II). The modified Bi-chitosan GCE developed in this study showed a relatively wide range of the Ni(II) and Co(II) concentrations (2–100 µg L−1) with a limit of detection of 3.6 µg L−1 for Ni(II) and 2.4 µg L−1 for Co(II), respectively. The developed sensor was applied to Ni(II) and Co(II) spiked natural water samples and showed good performance of detection with 12 consecutive measurements. Overall, the fabricated sensor showed excellent sensitivity toward Ni(II) and Co(II) in natural water samples.
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A novel catalytic adsorptive stripping voltammetric method for the determination of germanium ultratraces in the presence of chloranilic acid and the V(IV)·HEDTA complex. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04669-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractA novel, sensitive catalytic adsorptive stripping voltammetric procedure which can be used to determine trace amounts of germanium is described. The method is based on the interfacial accumulation of the complex formed by Ge(IV) and the product of the reduction of chloranilic acid on the hanging mercury drop electrode or the renewable silver amalgam film electrode, and its subsequent reduction from the adsorbed state followed by the catalytic action of the V(IV)·HEDTA complex. The presence of V(IV)·HEDTA greatly enhances the adsorptive stripping response of Ge. The reduction of the Ge(IV) in the presence of chloranilic acid and V(IV)·HEDTA was investigated in detail and the effects of pH, electrolyte composition, and instrumental parameters were studied. Under optimal conditions, the catalytic peak current of germanium exhibited good linearity for Ge(IV) concentrations in the range of 0.75–60 nM (for 60 s of accumulation at −0.1 V, r2 = 0.995) and a low limit of detection (LOD = 0.085 nM). The procedure was successfully applied to determine Ge in water samples.
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Zarębski J, Bobrowski A, Gonciarczyk J, Królicka A. Selection of Optimal Ligand and Vanadium(IV) Complexonate for Sensitive Catalytic Adsorptive Stripping Voltammetric Quantification of Germanium. ELECTROANAL 2020. [DOI: 10.1002/elan.202060055] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jerzy Zarębski
- Department of Building Materials Technology, Faculty of Materials Science and Ceramics AGH University of Science and Technology Mickiewicza 30 30-059 Krakow Poland
| | - Andrzej Bobrowski
- Department of Building Materials Technology, Faculty of Materials Science and Ceramics AGH University of Science and Technology Mickiewicza 30 30-059 Krakow Poland
| | - Julia Gonciarczyk
- Department of Building Materials Technology, Faculty of Materials Science and Ceramics AGH University of Science and Technology Mickiewicza 30 30-059 Krakow Poland
| | - Agnieszka Królicka
- Department of Building Materials Technology, Faculty of Materials Science and Ceramics AGH University of Science and Technology Mickiewicza 30 30-059 Krakow Poland
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Núñez C, Arancibia V, Triviño JJ. A new strategy for the modification of a carbon paste electrode with carrageenan hydrogel for a sensitive and selective determination of arsenic in natural waters. Talanta 2018; 187:259-264. [PMID: 29853044 DOI: 10.1016/j.talanta.2018.05.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/06/2018] [Accepted: 05/07/2018] [Indexed: 11/16/2022]
Abstract
An adsorptive stripping voltammetric method for the determination of As(III) and Astotal in water samples using a carrageenan modified carbon paste electrode is presented for the first time (CAR-CPE). The modified electrode was prepared in different ways: by adding CAR in solid form or as a hydrogel together with graphite and paraffin, as well as adsorbing CAR by applying a potential on an unmodified carbon paste electrode. The best results were obtained when CAR was incorporated as hydrogel (HCAR-CPE). The selection of the ratio amounts for electrode preparation was carried out applying a multivariate experimental design. Variables like amount of graphite (U1), HCAR (U2) and paraffin (U3) were optimized using a (2K+2K+C) model. The results showed that the amount of HCAR was the most significant factor, and the adequate U1:U2:U3 ratio to prepare the electrode was: 493 mg of graphite, 214 μL of paraffin and 134 μL of carrageenan as gel. The optimum parameters for the determination of As(III) were pH = 3.25 (0.01 mol L-1 H3PO4/H2PO4- solution); Eacc = -0.50 V and tacc = 30 s. The electrode presents good linear behavior concentration range from 0.50 to 6.70 μg L-1, with a limit of detection of 0.22 μg L-1. The relative standard deviation was 5.0% at the 1.5 μg L-1 As(III) level (n = 16). The method was validated by quantifying As(III) in spiked tap water from laboratory (RE: 3.0%), and it was applied for the determination of Astotal in water samples from the Loa River (North of Chile) prior reduction of As(V) with Na2S2O3 solution, obtaining 814.00 ± 0.03 μg L-1. The results of the proposed method were compared with those obtained by adsorptive stripping voltammetry with HMDE and by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) techniques.
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Affiliation(s)
- Claudia Núñez
- Pontificia Universidad Católica de Chile, Chemistry Faculty, Vicuña Mackenna 4860, Santiago 7820436, Chile.
| | - Verónica Arancibia
- Pontificia Universidad Católica de Chile, Chemistry Faculty, Vicuña Mackenna 4860, Santiago 7820436, Chile.
| | - Juan José Triviño
- Pontificia Universidad Católica de Chile, Biological Sciences Faculty, Avda, Libertador Bernardo OHiggins 340, Santiago 8331150, Chile.
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Screen-Printed Electrodes Modified with "Green" Metals for Electrochemical Stripping Analysis of Toxic Elements. SENSORS 2018; 18:s18041032. [PMID: 29596391 PMCID: PMC5948781 DOI: 10.3390/s18041032] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 03/27/2018] [Accepted: 03/28/2018] [Indexed: 12/30/2022]
Abstract
This work reviews the field of screen-printed electrodes (SPEs) modified with “green” metals for electrochemical stripping analysis of toxic elements. Electrochemical stripping analysis has been established as a useful trace analysis technique offering many advantages compared to competing optical techniques. Although mercury has been the preferred electrode material for stripping analysis, the toxicity of mercury and the associated legal requirements in its use and disposal have prompted research towards the development of “green” metals as alternative electrode materials. When combined with the screen-printing technology, such environment-friendly metals can lead to disposable sensors for trace metal analysis with excellent operational characteristics. This review focuses on SPEs modified with Au, Bi, Sb, and Sn for stripping analysis of toxic elements. Different modification approaches (electroplating, bulk modification, use of metal precursors, microengineering techniques) are considered and representative applications are described. A developing related field, namely biosensing based on stripping analysis of metallic nanoprobe labels, is also briefly mentioned.
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Prabhakaran DC, Riotte J, Sivry Y, Subramanian S. Electroanalytical Detection of Cr(VI) and Cr(III) Ions Using a Novel Microbial Sensor. ELECTROANAL 2017. [DOI: 10.1002/elan.201600458] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Divyasree C. Prabhakaran
- Department of Materials Engineering; Indian Institute of Science; Bangalore-560012 Karnataka India
- Indo-French Cell for Water Sciences; Indian Institute of Science; Bangalore-560012 Karnataka India
| | - Jean Riotte
- Indo-French Cell for Water Sciences; Indian Institute of Science; Bangalore-560012 Karnataka India
| | - Yann Sivry
- Institut de Physique du Globe de Paris &; Université Paris Diderot Paris 7; UMR CNRS 7154, 1, Rue Jussieu 75238 Paris cedex 05 France
| | - Sankaran Subramanian
- Department of Materials Engineering; Indian Institute of Science; Bangalore-560012 Karnataka India
- Indo-French Cell for Water Sciences; Indian Institute of Science; Bangalore-560012 Karnataka India
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Stivaktakis PD, Giannakopoulos E, Vlastos D, Matthopoulos DP. Determination of genotoxic effects of methidathion alkaline hydrolysis in human lymphocytes using the micronucleus assay and square-wave voltammetry. Bioelectrochemistry 2016; 113:9-14. [PMID: 27607473 DOI: 10.1016/j.bioelechem.2016.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 08/23/2016] [Accepted: 08/31/2016] [Indexed: 01/20/2023]
Abstract
The interaction of pesticides with environmental factors, such as pH, may result in alterations of their physicochemical properties and should be taken into consideration in regard to their classification. This study investigates the genotoxicity of methidathion and its alkaline hydrolysis by-products in cultured human lymphocytes, using the square-wave voltammetry (square wave-adsorptive cathodic stripping voltammetry (SW-AdCSV) technique) and the cytokinesis block micronucleus assay (CBMN assay). According to the SW-AdCSV data the alkaline hydrolysis of methidathion results in two new molecules, one non-electro-active and a second electro-active which is more genotoxic than methidathion itself in cultured human lymphocytes, inducing higher micronuclei frequencies. The present study confirms the SW-AdCSV technique as a voltammetric method which can successfully simulates the electrodynamics of the cellular membrane.
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Affiliation(s)
- Polychronis D Stivaktakis
- Center of Toxicology Science & Research, Division of Morphology, Medical School, University of Crete, Voutes Campus, Heraklion, 71003, Crete, Greece
| | - Evangelos Giannakopoulos
- School of Science and Technology, Hellenic Open University, Tsamadou 13-15 & Saint Andrea, 262 22 Patras, Greece.
| | - Dimitris Vlastos
- Department of Environmental and Natural Resources Management, University of Patras, Seferi 2, 30100 Agrinio, Greece
| | - Demetrios P Matthopoulos
- Department of Environmental and Natural Resources Management, University of Patras, Seferi 2, 30100 Agrinio, Greece
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Smaili F, Benchettara A. Electrochemical determination of Cd2+ at a titanium electrode modified with a lead film by square wave anodic stripping voltammetry. RUSS J ELECTROCHEM+ 2016. [DOI: 10.1134/s1023193516010109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Pyrolyzed Photoresist Carbon Electrodes for Trace Electroanalysis of Nickel(II). CHEMOSENSORS 2015. [DOI: 10.3390/chemosensors3020157] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Rojas-Romo C, Arancibia V. A Comparative Study of 8-Hydroxyquinoline and 8-Hydroxyquinoline-5-sulfonic Acid for Antimony(III) Determination by AdSV. Substituent Effect on Sensitivity II. ELECTROANAL 2015. [DOI: 10.1002/elan.201400616] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Mardegan A, Cettolin M, Kamath R, Vascotto V, Stortini AM, Ugo P, Scopece P, Madou M, Moretto LM. Speciation of Trace Levels of Chromium with Bismuth Modified Pyrolyzed Photoresist Carbon Electrodes. ELECTROANAL 2014. [DOI: 10.1002/elan.201400392] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mardegan A, Dal Borgo S, Scopece P, Moretto LM, Hočevar SB, Ugo P. Simultaneous Adsorptive Cathodic Stripping Voltammetric Determination of Nickel(II) and Cobalt(II) at an In Situ Bismuth-Modified Gold Electrode. ELECTROANAL 2013. [DOI: 10.1002/elan.201300320] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Reactions of o,o′-Dihydroxy Azo Dyes with the Third Group M(III) Ions: A Spectroscopic and Electrochemical Study. J CHEM-NY 2013. [DOI: 10.1155/2013/853763] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The reactions of some metal ions of the third group (M(III)) with azo dyes were studied. Attention was focused on azo dyes with two hydroxy groups inortho-positions to azo group: eriochrome red B (ERB), eriochrome black T (EBT), eriochrome blue SE (EBSE), calcon (Calc), and kalces (KLC). The chelation is responsible for interaction of these dyes with Al(III), Sc(III), rare earth elements (REE) ions, Ga(III), and In(III). The complexes were studied using vis- and IR-spectrometry. One irreversible peak (P1) of complexes reduction was observed on voltammograms for all studied metal ions. The second peak P2 was observed only for Ga complexes with all investigated azo dyes. Based on the study, the possible mechanism of complexes reduction was proposed. Linear behavior has been found between the reduction peak currents of a set of metal complexes and the concentration of the respective metal cations. This can be used for metal ions determination by voltammetric methods.
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References. Anal Chem 2012. [DOI: 10.1201/b11478-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Baars O, Croot PL. Comparison of Alternate Reactants for pM Level Cobalt Analysis in Seawater by the Use of Catalytic Voltammetry. ELECTROANAL 2011. [DOI: 10.1002/elan.201100003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Erden S, Durmus Z, Kılıç E. Simultaneous Determination of Antimony and Lead in Gunshot Residue by Cathodic Adsorptive Stripping Voltammetric Methods. ELECTROANAL 2011. [DOI: 10.1002/elan.201000612] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abbasi S, Farmany A, Mortazavi SS. Ultrasensitive Simultaneous Quantification of Nanomolar Level of Cd and Zn by Cathodic Adsorptive Stripping Voltammetry in Some Real Samples. ELECTROANAL 2010. [DOI: 10.1002/elan.201000359] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Krystofova O, Trnkova L, Adam V, Zehnalek J, Hubalek J, Babula P, Kizek R. Electrochemical microsensors for the detection of cadmium(II) and lead(II) ions in plants. SENSORS 2010; 10:5308-28. [PMID: 22219663 PMCID: PMC3247708 DOI: 10.3390/s100605308] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2010] [Revised: 04/04/2010] [Accepted: 04/19/2010] [Indexed: 12/04/2022]
Abstract
Routine determination of trace metals in complex media is still a difficult task for many analytical instruments. The aim of this work was to compare three electro-chemical instruments [a standard potentiostat (Autolab), a commercially available miniaturized potentiostat (PalmSens) and a homemade micropotentiostat] for easy-to-use and sensitive determination of cadmium(II) and lead(II) ions. The lowest detection limits (hundreds of pM) for both metals was achieved by using of the standard potentiostat, followed by the miniaturized potentiostat (tens of nM) and the homemade instrument (hundreds of nM). Nevertheless, all potentiostats were sensitive enough to evaluate contamination of the environment, because the environmental limits for both metals are higher than detection limits of the instruments. Further, we tested all used potentiostats and working electrodes on analysis of environmental samples (rainwater, flour and plant extract) with artificially added cadmium(II) and lead(II). Based on the similar results obtained for all potentiostats we choose a homemade instrument with a carbon tip working electrode for our subsequent environmental experiments, in which we analyzed maize and sunflower seedlings and rainwater obtained from various sites in the Czech Republic.
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Affiliation(s)
- Olga Krystofova
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; E-Mails: (O.K.); (V.A.); (J.Z.)
| | - Libuse Trnkova
- Department of Chemistry, Faculty of Science, Masaryk University, Kotlarska 2, CZ-611 37 Brno, Czech Republic; E-Mail: (L.T.)
- Research Centre for Environmental Chemistry and Ecotoxicology, Faculty of Science, Masaryk University, Kotlarska 2, CZ-611 37 Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; E-Mails: (O.K.); (V.A.); (J.Z.)
| | - Josef Zehnalek
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; E-Mails: (O.K.); (V.A.); (J.Z.)
| | - Jaromir Hubalek
- Department of Microelectronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Udolni 53, CZ-602 00 Brno, Czech Republic; E-Mail: (J.H.)
| | - Petr Babula
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackeho 1-3, CZ-612 42 Brno, Czech Republic; E-Mail: (P.B.)
| | - Rene Kizek
- Department of Chemistry and Biochemistry, Faculty of Agronomy, Mendel University in Brno, Zemedelska 1, CZ-613 00 Brno, Czech Republic; E-Mails: (O.K.); (V.A.); (J.Z.)
- Author to whom correspondence should be addressed; E-Mail:
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23
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Xia F, Zhang X, Zhou C, Sun D, Dong Y, Liu Z. Simultaneous determination of copper, lead, and cadmium at hexagonal mesoporous silica immobilized quercetin modified carbon paste electrode. JOURNAL OF AUTOMATED METHODS & MANAGEMENT IN CHEMISTRY 2010; 2010:824197. [PMID: 20445747 PMCID: PMC2860364 DOI: 10.1155/2010/824197] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Accepted: 02/02/2010] [Indexed: 05/27/2023]
Abstract
A new method was developed for simultaneous determination of copper, lead, and cadmium, based on their voltammetric response at a carbon paste electrode modified with hexagonal mesoporous silica (HMS) immobilized quercetin (HMS-Qu/CPE). Compared with quercetin modified carbon paste electrode (Qu/CPE) and quercetin ionic liquid modified carbon paste electrode (Qu-IL/CPE), the HMS-Qu/CPE exhibited improved selectivity and high sensitivity toward the detection of copper, lead, and cadmium. The properties of the HMS-Qu/CPE in 0.1 M HCOONa-HCl buffer solution (pH 4.7) were investigated by adsorptive stripping voltammetry (ASV) and electrochemical impedance spectroscopy (EIS). The electrochemical behavior of copper, lead, and cadmium at the modified electrodes and factors affecting the preconcentration procedures were also investigated. Detection limits of 5.0, 0.8, 1.0 nM for copper, lead, and cadmium were obtained, respectively. The method is simple, fast, sensitive, and selective, and is successfully applied to soil sample.
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Affiliation(s)
- Fangquan Xia
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022 Shandong, China.
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24
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Town RM. Adsorptive stripping chronopotentiometry (AdSCP). Part 3: Multi-metal systems. J Electroanal Chem (Lausanne) 2009. [DOI: 10.1016/j.jelechem.2009.10.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Bobrowski A, Królicka A, Zarębski J. Characteristics of Voltammetric Determination and Speciation of Chromium - A Review. ELECTROANAL 2009. [DOI: 10.1002/elan.200904582] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Gholivand M, Bahrami S, Abbasi S, Sohrabi A. Simultaneous Determination of Nickel and Cadmium by Adsorptive Stripping Voltammetry. ELECTROANAL 2008. [DOI: 10.1002/elan.200704183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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28
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Town RM, van Leeuwen HP. Adsorptive stripping chronopotentiometry (AdSCP). Part 2: Basic experimental features. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2007.06.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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29
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Locatelli C. Voltammetric Analysis of Trace Levels of Platinum Group Metals – Principles and Applications. ELECTROANAL 2007. [DOI: 10.1002/elan.200704026] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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30
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Süren E, Yilmaz S, Türkoglu M, Kaya S. Concentrations of cadmium and lead heavy metals in Dardanelles seawater. ENVIRONMENTAL MONITORING AND ASSESSMENT 2007; 125:91-8. [PMID: 16917693 DOI: 10.1007/s10661-006-9242-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2005] [Accepted: 03/02/2006] [Indexed: 05/11/2023]
Abstract
Cadmium and lead were determined simultaneously in seawater by differential pulse stripping voltammetry (DPSV) preceded by adsoptive collection of complexes with 8-hydroxyquinoline (oxine) on to a hanging mercury drop electrode (HMDE). In preliminary experiments the optimal analytical condition for oxine concentration was found to be 2.10(-5) M, at pH 7.7, the accumulation potential was -1.1 V, and the initial scannig potential was -0.8 V. The peak potentials were found -0.652 V for Cd and -0.463 V for Pb At the 60 s accumalation time. The limit of detection (LOD) and limit of quantitatification (LOQ) were found to be by voltammetry as 0.588 and 1.959 microg l(-1) (RSD, 5.50%) for Cd and 0.931 and 3.104 microg l(-1) (RSD, 4.10%) for Pb at 60 s stirred accumulation time respectively. In these conditions the most of the seawater samples are amenable for direct voltammetric determination of cadmium and lead using a HMDE. An adsorptive stripping mechanism of the electrode reaction was proposed. For the comparison, seawater samples were also analysed by ICP-atomic emission spectrometry method (ICP-AES). The applied voltammetric technique was validated and good recoveries were obtained.
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Affiliation(s)
- Esin Süren
- Department of Chemistry, Faculty of Arts & Sciences, University of Canakkale Onsekiz Mart, Canakkale, Turkey
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31
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Wang J. Chapter 6 Stripping-based electrochemical metal sensors for environmental monitoring. ELECTROCHEMICAL SENSOR ANALYSIS 2007. [DOI: 10.1016/s0166-526x(06)49006-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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32
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Gholivand M, Romiani A. Highly Sensitive and Selective Measurement of Bismuth in Seawater and Drug with 1,2-Phenylenedioxydiacetic Acid by Cathodic Adsorptive Stripping Voltammetry. ELECTROANAL 2006. [DOI: 10.1002/elan.200503434] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Gholivand M, Nassab H, Mosavat A. Determination of Cadmium by Differential Pulse Adsorptive Stripping Voltammetry in the Present of Captopril. ELECTROANAL 2005. [DOI: 10.1002/elan.200403263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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van Leeuwen HP, Jansen S. Dynamic aspects of metal speciation by competitive ligand exchange–adsorptive stripping voltammetry (CLE–AdSV). J Electroanal Chem (Lausanne) 2005. [DOI: 10.1016/j.jelechem.2005.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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35
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Use of organic reagents for the voltammetric determination of rare-earth elements. JOURNAL OF ANALYTICAL CHEMISTRY 2005. [DOI: 10.1007/s10809-005-0089-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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36
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Svancara I, Baldrianova L, Vlcek M, Metelka R, Vytras K. A Role of the Plating Regime in the Deposition of Bismuth Films onto a Carbon Paste Electrode. Microscopic Study. ELECTROANAL 2005. [DOI: 10.1002/elan.200403061] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Direct and simultaneous voltammetric analysis of heavy metals in tap water samples at Assiut city: an approach to improve the analysis time for nickel and cobalt determination at mercury film electrode. Microchem J 2003. [DOI: 10.1016/s0026-265x(03)00090-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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38
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Garay F. Adsorptive square wave voltammetry of metal complexes. Effect of ligand concentration. J Electroanal Chem (Lausanne) 2003. [DOI: 10.1016/s0022-0728(03)00225-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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39
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Adsorptive square-wave voltammetry of metal complexes. Effect of ligand concentration. J Electroanal Chem (Lausanne) 2003. [DOI: 10.1016/s0022-0728(03)00226-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Garay F, Solis VM. Adsorptive square-wave voltammetry applied to study the reduction mechanism of Cu–sulfoxine and Cu–ferron complexes. J Electroanal Chem (Lausanne) 2003. [DOI: 10.1016/s0022-0728(03)00018-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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42
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Square-wave voltammetry of quasi-reversible electrode processes with coupled homogeneous chemical reactions. J Electroanal Chem (Lausanne) 2002. [DOI: 10.1016/s0022-0728(01)00695-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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43
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44
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Garay F, Solis VM. Adsorptive square wave voltammetry of metal complexes. Effect of ligand concentration. J Electroanal Chem (Lausanne) 2001. [DOI: 10.1016/s0022-0728(01)00449-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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45
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Garay F. Adsorptive square wave voltammetry of metal complexes. Effect of ligand concentration. J Electroanal Chem (Lausanne) 2001. [DOI: 10.1016/s0022-0728(01)00459-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Fanta K, Chandravanshi BS. Differential Pulse Anodic Stripping Voltammetric Determination of Cadmium(II) withN-p-Chlorophenyl-cinnamohydroxamic Acid Modified Carbon Paste Electrode. ELECTROANAL 2001. [DOI: 10.1002/1521-4109(200104)13:6<484::aid-elan484>3.0.co;2-m] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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47
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48
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49
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Suciu P, Vega M, Roman L. Determination of cadmium by differential pulse adsorptive stripping voltammetry. J Pharm Biomed Anal 2000; 23:99-106. [PMID: 10898159 DOI: 10.1016/s0731-7085(00)00279-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A study of the adsorptive stripping voltammetry of cadmium on a mercury drop electrode is reported in which 2-mercapto-5-phenyl-amino-1,3,4-thiadiazole (MPATD), synthesized at home has been used as a chelating agent. The most suitable operating conditions and parameters such as buffer, pH, deposition potential, deposition time, ligand concentration, scan rate and others were selected and the determination of cadmium from aqueous solutions using the standard additions method was possible. As validation criteria, the linearity and range, repeatability of the signal, repeatability of the concentration and accuracy were investigated. A limit of detection of 4.67 x 10(-10) M and a limit of quantification of 1.55 x 10(-9) M were achieved. The interference of other metals and organic substances was studied. Concerning a possible catalytic effect, no one was found. The method was designed in order to determine Cd from biological samples.
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Affiliation(s)
- P Suciu
- Department of Analytical Chemistry, University of Medicine and Pharmacy Iuliu Hatieganu, Cluj-Napoca, Romania.
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50
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Ensafi AA, Naeeni MA. Determination of Copper by an Adsorption Differential Pulse Stripping Method with Naphthol Derivative. ANAL LETT 2000. [DOI: 10.1080/00032710008543146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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