Rapid and on-site simultaneous electrochemical detection of copper, lead and mercury in the Amazon river

Bernalte, Elena; Arévalo, Sebastián; Pérez-Taborda, Jaime A.; Wenk, Jannis; Estrela, Pedro; Bernal, Alba Graciela Ávila; Lorenzo, Mirella Di

doi:10.1016/j.snb.2019.127620

Cited by 92 publications

(46 citation statements)

References 32 publications

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“…Of late, screen-printed sensors have been developed, with multiple working electrodes on the same support, for the simultaneous electrochemical detection of different analytes, like anions, cations, pesticides, phenols, amines, carbohydrates, etc. [75][76][77][78].…”

Section: Development Of Screen-printed Based Sensorsmentioning

confidence: 99%

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Bounegru

Apetrei

2020

Catalysts

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This paper aims to revise research on carbonaceous nanomaterials used in developing sensors. In general, nanomaterials are known to be useful in developing high-performance sensors due to their unique physical and chemical properties. Thus, descriptions were made for various structural features, properties, and manner of functionalization of carbon-based nanomaterials used in electrochemical sensors. Of the commonly used technologies in manufacturing electrochemical sensors, the screen-printing technique was described, highlighting the advantages of this type of device. In addition, an analysis was performed in point of the various applications of carbon-based nanomaterial sensors to detect analytes of interest in different sample types.

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Section: Development Of Screen-printed Based Sensorsmentioning

confidence: 99%

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Bounegru

Apetrei

2020

Catalysts

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“…[ 13 ] Hence, it is urgent to routinely monitor Hg 2+ ions as a challenge not only for environmental checking but also for drinking water sources and health protection. The various sophisticated and expensive techniques are available for selective determination of Hg 2+ ions included atomic absorption spectrometry, [ 14 ] atomic emission spectrometry, [ 15 ] cold vapor atomic absorption spectrometry, [ 16 ] X‐ray fluorescence spectrometry, [ 17 ] inductive coupled plasma mass spectrometry, [ 18 ] electrochemical analysis, [ 19 ] and gas chromatography. [ 20 ] Although existing detection approaches offer high selectivity and unparalleled sensitivity, most of them have drawbacks of large sample volumes, time‐consuming, bulky instrumentation, and tedious sample preparation procedures that make in situ and on‐site analyses impossible.…”

Section: Introductionmentioning

confidence: 99%

A Simple Method for Developing a Hand‐Drawn Paper‐Based Sensor for Mercury; Using Green Synthesized Silver Nanoparticles and Smartphone as a Hand‐Held‐Device for Colorimetric Assay

et al. 2021

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Mercury ions are highly toxic at trace levels, and its pollution has posed a significant threat to the environment and public health, where current detection methods mainly require laborious operation and expensive instrumentation. Herein, a simple, cost‐effective, instrument‐free approach for selective detection of Hg2+ based on a hand‐drawn paper‐based naked‐eye colorimetric device is developed. To develop a hand‐drawn paper‐based device, a crayon is used to build hydrophobic barriers and a paper puncher is applied to obtain patterns as a sensing zone. A green method for the synthesis of silver nanoparticles (AgNPs) is applied using Achillea Wilhelmsii (Aw) extract. The sensing ability of Aw‐AgNPs toward Hg2+ is investigated in both solution‐phase and paper substrate loaded with Aw‐AgNPs using colorimetric methods. For the paper‐based sensor, the quantification of the target relies on the visual readout of a color‐changed sensing zone modified with Aw‐AgNPs. Under optimal conditions, the color of Aw‐AgNPs in aqueous solution and on the coated paper substrate can change from brown to colorless upon addition of target, with a detection limit of 28 × 10−9 m and 0.30 × 10−6 m, respectively. In conclusion, the present study indicates the potential of this hand‐drawn eco‐friendly paper‐based sensor for monitoring of mercury.

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“…Apart from common advanced methods for amoxicillin detection such as high-performance liquid chromatography (HPLC) with fluorescence detector, HPLC with ultravioletvisible detector, chemiluminescence, high-performance liquid chromatography-tandem mass spectrometry, and ultra performance liquid chromatography-mass spectrometry [13][14][15][16]; electrochemical methods have been widely applied in the analysis of antibiotics in real samples in the recent decades because of its advantages such as low cost, simple operation, fast measurement, and good sensitivity and selectivity [17]. Additionally, electrochemical methods can be easily performed for quick analysis of contaminants on-site [18].…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Amoxicillin Using a Reduced Graphite Oxide Nanosheet Electrode

Pham

Trang

Nguyen

et al. 2021

Journal of Analytical Methods in Chemistry

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A reduced graphite oxide nanosheet electrode (RGOnS) was prepared as a sensor for amoxicillin (AMX) detection, an antibiotic commonly used in the livestock farm, by the square-wave adsorptive stripping voltammetry technique. Graphite oxide with nanosheet shape was produced from a graphite electrode by a chronoamperometry process at 5 V and then an electrochemical reduction process was carried out to form RGOnS with restored long-range conjugated networks and better conductivity. The electrodes were characterized by SEM, EDX, and FTIR spectroscopy. The RGOnS electrode prepared at an optimal reduction potential of −1 V for 120 s exhibits a larger electrochemical active surface area, and the obtained oxidation signal of AMX is approximately ten times higher than that of the pristine graphite electrode. The analytical conditions such as the pH of electrolyte and accumulation time were optimized. The calibration curve built under the optimal conditions provided a good linear relationship in the range of AMX concentration from 0.5–80 µM with the correlation coefficient of 0.9992. The limit of detection was calculated as 0.193 µM. Satisfactory results are obtained from the detection of the AMX in different samples using the prepared electrode.

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Rapid and on-site simultaneous electrochemical detection of copper, lead and mercury in the Amazon river

Cited by 92 publications

References 32 publications

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

Carbonaceous Nanomaterials Employed in the Development of Electrochemical Sensors Based on Screen-Printing Technique—A Review

A Simple Method for Developing a Hand‐Drawn Paper‐Based Sensor for Mercury; Using Green Synthesized Silver Nanoparticles and Smartphone as a Hand‐Held‐Device for Colorimetric Assay

Voltammetric Determination of Amoxicillin Using a Reduced Graphite Oxide Nanosheet Electrode

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