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Lisboa TP, de Faria LV, de Oliveira WBV, Oliveira RS, de Souza CC, Matos MAC, Dornellas RM, Matos RC. Simultaneous monitoring of amoxicillin and paracetamol in synthetic biological fluids using a 3D printed disposable electrode with a lab-made conductive filament. Anal Bioanal Chem 2024; 416:215-226. [PMID: 37923939 DOI: 10.1007/s00216-023-05009-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/09/2023] [Accepted: 10/12/2023] [Indexed: 11/06/2023]
Abstract
In this work, we are pleased to present for the first time a 3D-printed electrochemical device using a lab-made conductive filament based on graphite (Gr) and polylactic acid (PLA) polymer matrix for the simultaneous detection of amoxicillin (AMX) and paracetamol (PAR). The sensor was properly characterized by scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). Compared to the commercial glassy carbon electrode (GCE), the superior performance of the 3D-Gr/PLA electrode was verified with a 3.8-fold more favored charge transfer. A differential pulse voltammetry (DPV) method was proposed providing a linear working range of 4 to 12 μmol L-1 for both analytes and a limit of detection (LOD) of 0.80 and 0.51 μmol L-1 for AMX and PAR, respectively. Additionally, repeatability studies (n = 5, RSD < 5.7%) indicated excellent precision, and recovery percentages ranging from 89 to 109% when applied to synthetic human urine, saliva, and plasma samples, attested to the accuracy of the method. The studies also indicate that the sensor does not suffer significant interference from common substances (antibiotics and biomarkers) present in the biological fluids, which makes it a promising analytical tool considering its low-cost, ease of manufacturing, robustness, and electrochemical performance.
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Affiliation(s)
- Thalles Pedrosa Lisboa
- Chemistry Department, Federal University of Juiz de Fora, Juiz de Fora, 36036-900, Brazil.
- FACET, Great Dourados Federal University, Dourados, 79804-970, Brazil.
| | | | | | - Raylla Santos Oliveira
- Chemistry Department, Federal University of Juiz de Fora, Juiz de Fora, 36036-900, Brazil
| | | | | | | | - Renato Camargo Matos
- Chemistry Department, Federal University of Juiz de Fora, Juiz de Fora, 36036-900, Brazil.
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Lisboa TP, de Faria LV, de Oliveira WBV, Oliveira RS, Matos MAC, Dornellas RM, Matos RC. Cost-effective protocol to produce 3D-printed electrochemical devices using a 3D pen and lab-made filaments to ciprofloxacin sensing. Mikrochim Acta 2023; 190:310. [PMID: 37466780 DOI: 10.1007/s00604-023-05892-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/29/2023] [Indexed: 07/20/2023]
Abstract
A novel conductive filament based on graphite (Gr) dispersed in polylactic acid polymer matrix (PLA) is described to produce 3D-electrochemical devices (Gr/PLA). This conductive filament was used to additively manufacture electrochemical sensors using the 3D pen. Thermogravimetric analysis confirmed that Gr was successfully incorporated into PLA, achieving a composite material (40:60% w/w, Gr and PLA, respectively), while Raman and scanning electron microscopy revealed the presence of defects and a high porosity on the electrode surface, which contributes to improved electrochemical performance. The 3D-printed Gr/PLA electrode provided a more favorable charge transfer (335 Ω) than the conventional glassy carbon (1277 Ω) and 3D-printed Proto-pasta® (3750 Ω) electrodes. As a proof of concept, the ciprofloxacin antibiotic, a species of multiple interest, was selected as a model molecule. Thus, a square wave voltammetry (SWV) method was proposed in the potential range + 0.9 to + 1.3 V (vs Ag|AgCl|KCl(sat)), which provided a wide linear working range (2 to 32 µmol L-1), 1.79 µmol L-1 limit of detection (LOD), suitable precision (RSD < 7.9%), and recovery values from 94 to 109% when applied to pharmaceutical and milk samples. Additionally, the sensor is free from the interference of other antibiotics routinely employed in veterinary practices. This device is disposable, cost-effective, feasibly produced in financially limited laboratories, and consequently promising for evaluation of other antibiotic species in routine applications.
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Affiliation(s)
- Thalles Pedrosa Lisboa
- Chemistry Department, Federal University of Juiz de Fora, Juiz de Fora, 36036-900, Brazil.
- College of Exact Sciences and Technology, Federal University of Grande Dourados, Dourados, 79804-970, Brazil.
| | | | | | - Raylla Santos Oliveira
- Chemistry Department, Federal University of Juiz de Fora, Juiz de Fora, 36036-900, Brazil
| | | | | | - Renato Camargo Matos
- Chemistry Department, Federal University of Juiz de Fora, Juiz de Fora, 36036-900, Brazil.
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De Sá IC, De Oliveira PM, Nossol E, Borges PHS, Lepri FG, Semaan FS, Dornellas RM, Pacheco WF. Modified dry bean pod waste (Phaseolus vulgaris) as a biosorbent for fluorescein removal from aqueous media: Batch and fixed bed studies. J Hazard Mater 2022; 424:127723. [PMID: 34823949 DOI: 10.1016/j.jhazmat.2021.127723] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 10/29/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
This study presents the use of dry bean pods as a solid phase for fluorescein removal from water. The non-pretreated solid phase did not display any sorption properties for the chosen dye. However, interesting sorption properties were observed following a chemical derivative treatment with nitric acid. The study was carried out using both batch and column approaches. Regarding the batch study, all parameters that influence sorption capacity, such, as pH, adsorbent mass, ionic strength, temperature and contact time, were evaluated. A sorptive capacity of 36.80 mg g-1 was obtained in the optimized condition. In the fixed column bed study, the influence of particle size, flow rate and initial concentration of the dye were evaluated through breakthrough curves and a sorptive capacity of 4.35 mg g-1 was obtained. Thermodynamic studies revealed that the adsorption is exothermic and spontaneous. Four different models, Langmuir, Freundlich, Temkin and Redlich-Patterson, were employed. The Akaike information criterion (AIC) was employed to rank the best equilibrium model, which was determined as the Freundlich isotherm. The method was applied to a real sample and the same removal rate was obtained, thus indicating its suitability to wastewater treatment.
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Affiliation(s)
- Igor C De Sá
- Universidade Federal Fluminense, Departamento de Química Analítica, Outeiro São João Batista s/n, Centro, Niterói, RJ, Brazil
| | - P M De Oliveira
- Universidade Federal Fluminense, Departamento de Química Analítica, Outeiro São João Batista s/n, Centro, Niterói, RJ, Brazil
| | - E Nossol
- Universidade Federal de Uberlândia, Instituto de Química, Av. João Naves de Ávila, 2121, Uberlândia, MG, Brazil
| | - P H S Borges
- Universidade Federal de Uberlândia, Instituto de Química, Av. João Naves de Ávila, 2121, Uberlândia, MG, Brazil
| | - Fábio G Lepri
- Universidade Federal Fluminense, Departamento de Química Analítica, Outeiro São João Batista s/n, Centro, Niterói, RJ, Brazil
| | - F S Semaan
- Universidade Federal Fluminense, Departamento de Química Analítica, Outeiro São João Batista s/n, Centro, Niterói, RJ, Brazil
| | - R M Dornellas
- Universidade Federal Fluminense, Departamento de Química Analítica, Outeiro São João Batista s/n, Centro, Niterói, RJ, Brazil
| | - W F Pacheco
- Universidade Federal Fluminense, Departamento de Química Analítica, Outeiro São João Batista s/n, Centro, Niterói, RJ, Brazil.
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Nogueira FDS, Araujo FM, De Faria LV, Lisboa TP, Azevedo GC, Dornellas RM, Matos MAC, Matos RC. Simultaneous determination of strobilurin fungicides residues in bean samples by HPLC-UV-AD using boron-doped diamond electrode. Talanta 2020; 216:120957. [PMID: 32456891 DOI: 10.1016/j.talanta.2020.120957] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/16/2020] [Accepted: 03/18/2020] [Indexed: 01/13/2023]
Abstract
The aim of this paper was the development of a method for the determination of six strobilurins (fungicides) using boron-doped diamond (BDD) electrode with amperometric detection (AD) homemade coupled to high performance liquid chromatography (HPLC/UV-Vis). HPLC separation of fungicides was performed in a C18 reverse phase column using both UV and AD detectors at 200 mn and 1.9 V, respectively. The linear range for each strobilurin was from 5 to 15 mg L-1 and the correlation coefficients for all the compounds were above 0.997. Both detectors presented adequate detectability (LOD ranging from 1.33 to 1.57 μg kg-1) respecting the limits pre-established by regulatory agencies. The method was validated presenting good values of recovery and accuracy. In the spiked samples the recoveries ranged from 61.6% (trifloxystrobin) to 98.8% (azoxystrobin) for UV and 62.3% (trifloxystrobin) to 95.2% (azoxystrobin) for AD. In blanks spikes the recovery varied from 77.8% (picoxystrobin) to 88.4% (kresoxim-methyl) for UV and 76.7% (picoxystrobin) to 87.1% (dimoxystrobin) for AD. The method showed good precision (RSD < 10%). The results obtained by amperometric and UV detections were statistically comparable. Seven bean samples were analyzed to detect fungicide residues.
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Affiliation(s)
- Fernanda da Silva Nogueira
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil
| | - Fausto Moreira Araujo
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil
| | - Lucas Vinícius De Faria
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil
| | - Thalles Pedrosa Lisboa
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil
| | - Gustavo Chevitarese Azevedo
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil
| | - Rafael Machado Dornellas
- Departamento de Química, Instituto de Química, Universidade Federal Fluminense, 24020-141, Niterói, RJ, Brazil
| | - Maria Auxiliadora Costa Matos
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil
| | - Renato Camargo Matos
- NUPIS (Núcleo de Pesquisa em Instrumentação e Separações Analíticas), Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, 36036-900, Juiz de Fora, MG, Brazil.
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