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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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A simple and reliable electroanalytical method employing a disposable commercial electrode for simultaneous determination of lead(II) and mercury(II) in beer. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104564] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Fabrication of paper-based analytical devices using a PLA 3D-printed stencil for electrochemical determination of chloroquine and escitalopram. J Solid State Electrochem 2021; 26:581-586. [PMID: 34751209 PMCID: PMC8566020 DOI: 10.1007/s10008-021-05075-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 11/19/2022]
Abstract
In recent years, the use of prescribed and non-prescribed drugs has increased. Therefore, advances in new technologies and sensors for detecting molecules in natural environments are required. In this work, a 3D-printed polylactic acid stencil is used to fabricate paper-based analytical devices (ePADs). Herein, we report the use of carbon-based lab-manufactured conductive ink for the fabrication of sensors towards the detection of chloroquine and escitalopram. For each batch, eight ePADs were successfully fabricated. Firstly, the fabricated sensors were evaluated morphologically by scanning electron microscopy and electrochemically by cyclic voltammetry and electrochemical impedance spectroscopy experiments. The sensors displayed a well-defined voltammetric profile in the presence of the redox couple, when compared to a commercial carbon screen-printed electrode. Differential pulse voltammetry conducted the detection of chloroquine and escitalopram with detection limits of 4.0 and 0.5 µmol L−1, respectively. The ePADs fabricated using the 3D stencil are here presented as alternatives for the fabrication of electrochemical analytical devices.
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Critical reviews of electro-reactivity of screen-printed nanocomposite electrode to safeguard the environment from trace metals. MONATSHEFTE FUR CHEMIE 2021. [DOI: 10.1007/s00706-021-02802-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Pavão e Pavão D, Nascimento Botelho C, Nunes Fernandes R, Costa dos Santos C, Santos Damos F, Cássia Silva Luz R. A Simple, Cost‐effective, and Environmentally Friendly Method for Determination of Ciprofloxacin in Drugs and Urine Samples Based on Electrogenerated Chemiluminescence. ELECTROANAL 2020. [DOI: 10.1002/elan.201900355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | | | - Flavio Santos Damos
- Department of ChemistryFederal University of Maranhão 65080-805 São Luís MA Brazil
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Squissato AL, Munoz RAA, Banks CE, Richter EM. An Overview of Recent Electroanalytical Applications Utilizing Screen‐Printed Electrodes Within Flow Systems. ChemElectroChem 2020. [DOI: 10.1002/celc.202000175] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- André L. Squissato
- Institute of Chemistry Federal University of Uberlandia Av. João Naves de Ávila 2121 – Uberlandia, Minas Gerais Brazil
| | - Rodrigo A. A. Munoz
- Institute of Chemistry Federal University of Uberlandia Av. João Naves de Ávila 2121 – Uberlandia, Minas Gerais Brazil
| | - Craig E. Banks
- Faculty of Science and Engineering Manchester Metropolitan University Chester Street Manchester M1 5GD UK
| | - Eduardo M. Richter
- Institute of Chemistry Federal University of Uberlandia Av. João Naves de Ávila 2121 – Uberlandia, Minas Gerais Brazil
- Faculty of Science and Engineering Manchester Metropolitan University Chester Street Manchester M1 5GD UK
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Additive-manufactured sensors for biofuel analysis: copper determination in bioethanol using a 3D-printed carbon black/polylactic electrode. Anal Bioanal Chem 2020; 412:2755-2762. [DOI: 10.1007/s00216-020-02513-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/04/2020] [Accepted: 02/12/2020] [Indexed: 12/15/2022]
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Voltammetric determination of copper and tert-butylhydroquinone in biodiesel: A rapid quality control protocol. Talanta 2019; 201:433-440. [DOI: 10.1016/j.talanta.2019.04.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/06/2019] [Accepted: 04/10/2019] [Indexed: 01/30/2023]
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João AF, Squissato AL, Fernandes GM, Cardoso RM, Batista AD, Muñoz RA. Iron (III) determination in bioethanol fuel using a smartphone-based device. Microchem J 2019. [DOI: 10.1016/j.microc.2019.02.053] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Stefano JS, Dias AC, Arantes IVS, Costa BMC, Silva LAJ, Richter EM, Banks CE, Munoz RAA. Batch‐Injection Amperometric Analysis on Screen‐Printed Electrodes: Analytical System for High‐Throughput Determination of Pharmaceutical Molecules. ELECTROANAL 2018. [DOI: 10.1002/elan.201800725] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Jéssica S. Stefano
- Instituto de QuímicaUniversidade Federal de Uberlândia Av. João Naves de Ávila, 2121 38408100 Uberlândia, MG Brazil
| | - Aline C. Dias
- Instituto de QuímicaUniversidade Federal de Uberlândia Av. João Naves de Ávila, 2121 38408100 Uberlândia, MG Brazil
| | - Iana V. S. Arantes
- Instituto de QuímicaUniversidade Federal de Uberlândia Av. João Naves de Ávila, 2121 38408100 Uberlândia, MG Brazil
| | - Brenda M. C. Costa
- Instituto de QuímicaUniversidade Federal de Uberlândia Av. João Naves de Ávila, 2121 38408100 Uberlândia, MG Brazil
| | - Luiz A. J. Silva
- Instituto de QuímicaUniversidade Federal de Uberlândia Av. João Naves de Ávila, 2121 38408100 Uberlândia, MG Brazil
| | - Eduardo M. Richter
- Instituto de QuímicaUniversidade Federal de Uberlândia Av. João Naves de Ávila, 2121 38408100 Uberlândia, MG Brazil
| | - Craig E. Banks
- Faculty of Science and EngineeringManchester Metropolitan University ce Manchester M1 5GD UK
| | - Rodrigo A. A. Munoz
- Instituto de QuímicaUniversidade Federal de Uberlândia Av. João Naves de Ávila, 2121 38408100 Uberlândia, MG Brazil
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