A novel carbon paste electrode modified by NP-Al2O3 for the electrochemical simultaneous detection of Pb (II) and Hg (II)

Moutcine, Abdelaziz; Laghlimi, Charaf; Ifguis, Ousama; Smaini, Mohamed Amine; Qouatli, Salah Eddine El; Hammi, Maryama; Chtaini, Abdelilah

doi:10.1016/j.diamond.2020.107747

Cited by 36 publications

(11 citation statements)

References 41 publications

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“…The increase in peak currents from 0.3253 mA·cm −2 (with CPE) to 0.4681 mA·cm −2 (with CPE-ACC) not only shows that the CPE-type electrode has indeed been modified but also that the modification boosts the recognition of lead. Previous work has shown similar behavior [ 19 , 20 ].…”

Section: Resultssupporting

confidence: 63%

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Blaise

Valery

Maallah

et al. 2022

Journal of Analytical Methods in Chemistry

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Calcinated and acidified clay modified carbon graphite electrode was deployed in the simultaneous evaluation of traces of Pb2+ and Cd2+ in solution. After 5 minutes of accumulation in the circuit, the sensitivity of the electrode was evaluated in a solution of Na2SO4 (0.1 M) by square wave voltammetry on the one hand with Pb (II) and on the other hand with Cd (II). Several experimental conditions such as the composition of the carbon clay paste, the effect of preconcentration time, the sweeping speed, concentration effect, media pH, and interference ionic response to the electrochemical response of the working electrode were examined. It was observed that, after 5 minutes of preconcentration, detection limits of 0.15513 μmol·L−1 and 0.24227 μmol·L−1 were obtained for Pb2+ and Cd2+ in the electrolyte solution and 0.08438 μmol·L−1 and 0.46522 μmol·L−1, respectively, when tap water was used. The detection was effective by square wave voltammetry with a more intense current density with respect to lead.

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Section: Resultssupporting

confidence: 63%

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Blaise

Valery

Maallah

et al. 2022

Journal of Analytical Methods in Chemistry

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“…[11,12] To improve the sensor figures of merit, many examples of carbon paste electrodes modified with adsorbing materials appeared in the dedicated literature. [13][14][15] Inorganic insulating modifiers (SiO 2 , Al 2 O 3 , etc.) are particularly appealing as they are usually characterized by high chemical stability and large surface area.…”

Section: Introductionmentioning

confidence: 99%

“…In parallel, the research opened the way to non metallic, carbonaceous materials encompassing a large amount of studies on the so‐called carbon paste electrodes due to their easy fabrication and their easy tailoring with proper modifiers [11,12] . To improve the sensor figures of merit, many examples of carbon paste electrodes modified with adsorbing materials appeared in the dedicated literature [13–15] . Inorganic insulating modifiers (SiO 2 , Al 2 O 3 , etc.)…”

Section: Introductionmentioning

confidence: 99%

High‐Content Hydroxyapatite Carbon Composites for the Electrochemical Detection of Heavy Metal Cations in Water

et al. 2023

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The great performance of nanostructured hydroxyapatite (Hap) in adsorbing heavy metal cations with the good electrical conductivity of high-surface carbon materials was here combined for the crafting of high-content hydroxyapatite electrodes (Hap 84-96 wt.%) endowed with the synergistic capability of detection and adsorption of heavy metal cations by water solutions. To improve the sustainability of the sensor, a mesoporous carbon (derivable by bio-waste) was selected as scaffold for depositing Hap by simply co-precipitation. The composite with 92 wt.% of Hap, which exhibited ca. 1 : 1 ratio between the exposed area of Hap and carbon (by Brunauer-Emmett-Teller method), invariably showed an average stripping oxidation peak intensity of ca. 250 μA cm À 2 and 150 μA cm À 2 for a 50 μM Pb 2 + and Cu 2 + solution, respectively. Control experiments showed that the above sensor outperformed the sensibility of two low-content Hap electrodes (4 and 8 wt.%), representative of the best performing Hap-carbon composites available in literature.

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“…8 Alternatively, the electro-analytical technique has been widely applied owing to its low cost and exposure range either in part per billion (ppb) or trillion (ppt) in a few cases. [9][10][11] Presently, most researchers focus on detecting heavy metal ions by anodic stripping voltammetry because it is a rapid and insightful electro-analytical method, which is also used to analyze an effective pre-concentration and consequent measurements step. [12][13][14] Nevertheless, graphite electrodes usually show limited sensitivity due to their low precise surface area, inadequate electro active centers, and low adsorption capability for ions.…”

Section: Introductionmentioning

confidence: 99%

Determination of Pb²⁺ and Cd²⁺ ions in raw milk, honey and groundnut shell using TSAB/MWCNT

2023

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A novel carbon paste electrode modified by NP-Al2O3 for the electrochemical simultaneous detection of Pb (II) and Hg (II)

Cited by 36 publications

References 41 publications

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

High‐Content Hydroxyapatite Carbon Composites for the Electrochemical Detection of Heavy Metal Cations in Water

Determination of Pb²⁺ and Cd²⁺ ions in raw milk, honey and groundnut shell using TSAB/MWCNT

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A novel carbon paste electrode modified by NP-Al2O3 for the electrochemical simultaneous detection of Pb (II) and Hg (II)

Cited by 36 publications

References 41 publications

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

High‐Content Hydroxyapatite Carbon Composites for the Electrochemical Detection of Heavy Metal Cations in Water

Determination of Pb2+ and Cd2+ ions in raw milk, honey and groundnut shell using TSAB/MWCNT

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Determination of Pb²⁺ and Cd²⁺ ions in raw milk, honey and groundnut shell using TSAB/MWCNT