Flow electroanalytical system based on cyclam-modified graphite felt electrodes for lead detection

Nasraoui, Rihab; Floner, Didier; Paul-Roth, Christine O.; Geneste, Florence

doi:10.1016/j.jelechem.2009.10.028

Cited by 27 publications

(26 citation statements)

References 35 publications

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“…LOD and LOQ values are gathered in Table 1, indicating better performance for lead detection compared to Hg 2+ . Interestingly, the LOD value for lead (5 × 10 −8 M) is close to that obtained for ligandmodified felts (2.5 × 10 −8 M) [20,21]. A LOD value of 10 −9 M for Pb 2+ was reported for an unmodified graphite felt but this electrode had a specific surface area of 0.7 m 2 g −1 that is 5 times higher than the one used in this work [19].…”

Section: Resultssupporting

confidence: 80%

“…International Journal of Electrochemistry They are therefore ideal candidates as electrodes in flow electrochemical sensors for trace metals analysis, as already shown for lead, zinc, and copper [18][19][20][21][22]. Using linear sweep stripping voltammetry (LSSV), limit of detection of lead as low as 10 −9 M was achieved using unmodified graphite felt [19] and 2.5 × 10 −8 M using graphite felts modified by covalent attachment of 1,4,8-tri(carbamoylmethyl) hydroiodide (TETRAM) ligands [20] and cyclam ligands [21].…”

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confidence: 84%

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Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb²⁺, Hg²⁺)

Bouabdalaoui

Ouay

Coradin

et al. 2015

International Journal of Electrochemistry

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Hydrophilized graphite felt has been used,for the first time, for the electrochemical detection of Hg2+ions both as single metal species and via its simultaneous detection with Pb2+. To do so, square wave voltammetry (SWV) method was developed with alginate modified graphite felt as working electrode. The structure of the graphite felt such as its high porosity and specific surface area coupled with its good electrical conductivity allows achieving large peak currents via the SWV method, suggesting that the alginate coating helps to preconcentrate metals at the carbon surface. The as-described electrode has low cost, it is easy to manipulate, and the electrochemical analysis can be performed by simple immersion of the felt in the metal solution.

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Section: Resultssupporting

confidence: 80%

mentioning

confidence: 84%

Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb²⁺, Hg²⁺)

Bouabdalaoui

Ouay

Coradin

et al. 2015

International Journal of Electrochemistry

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“…However, the preparation of such an analytical system is still challenging. Electroanalysis is one of the most promising methods to meet this need [3][4][5][6][7][8]. Research on trace heavy metal analysis with portable systems mainly focus on anodic stripping voltammetry that allows the detection of very low concentrations of metallic ions by their preconcentration on the electrode surface.…”

Section: Introductionmentioning

confidence: 99%

Coupling of Anodic Stripping Voltammetry with Sampled-Current Voltammetry on an Electrode Array: Application to Lead Detection

Mazerie

Geneste

2020

Sensors

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Electrochemical detection systems are very promising for pollution monitoring owing to their easy miniaturization and low cost. For this purpose, we have recently developed a new concept of device based on Electrodes Array for Sampled-Current Voltammetry (EASCV), which is compatible with miniaturization and portability. In this work, to improve the sensitivity of the analytical method, we added a preconcentration step before EASCV analysis, combining sampled-current voltammetry with anodic stripping voltammetry. Lead was chosen as analyte for this probe of concept owing to its high toxicity. The conditions for electrodeposition of lead on gold were optimized by means of under potential deposition. Current intensities 300 times higher than with linear sweep anodic stripping voltammetry were obtained, showing the interest in the method. The value of the sampling time directly affected the sensitivity of the sensor given by the slope of the linear calibration curve. The sensor exhibited a limit of detection of 1.16 mg L −1 , similar to those obtained with linear sweep anodic stripping voltammetry.

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“…French groups particularly focused their research on cyclams (Goubert-Renaudin et al, 2009a,b; Nasraoui et al, 2010a,b), crown-ethers (Parat et al, 2006; Betelu et al, 2007) and calixarenes (Dernane et al, 2013; Rouis et al, 2013). …”

Section: Introductionmentioning

confidence: 99%

Electrochemical sensors and devices for heavy metals assay in water: the French groups' contribution

et al. 2014

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A great challenge in the area of heavy metal trace detection is the development of electrochemical techniques and devices which are user-friendly, robust, selective, with low detection limits and allowing fast analyses. This review presents the major contribution of the French scientific academic community in the field of electrochemical sensors and electroanalytical methods within the last 20 years. From the well-known polarography to the up-to-date generation of functionalized interfaces, the different strategies dedicated to analytical performances improvement are exposed: stripping voltammetry, solid mercury-free electrode, ion selective sensor, carbon based materials, chemically modified electrodes, nano-structured surfaces. The paper particularly emphasizes their advantages and limits face to the last Water Frame Directive devoted to the Environmental Quality Standards for heavy metals. Recent trends on trace metal speciation as well as on automatic “on line” monitoring devices are also evoked.

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Flow electroanalytical system based on cyclam-modified graphite felt electrodes for lead detection

Cited by 27 publications

References 35 publications

Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb²⁺, Hg²⁺)

Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb²⁺, Hg²⁺)

Coupling of Anodic Stripping Voltammetry with Sampled-Current Voltammetry on an Electrode Array: Application to Lead Detection

Electrochemical sensors and devices for heavy metals assay in water: the French groups' contribution

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Flow electroanalytical system based on cyclam-modified graphite felt electrodes for lead detection

Cited by 27 publications

References 35 publications

Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb2+, Hg2+)

Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb2+, Hg2+)

Coupling of Anodic Stripping Voltammetry with Sampled-Current Voltammetry on an Electrode Array: Application to Lead Detection

Electrochemical sensors and devices for heavy metals assay in water: the French groups' contribution

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Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb²⁺, Hg²⁺)

Evaluation of Hydrophilized Graphite Felt for Electrochemical Heavy Metals Detection (Pb²⁺, Hg²⁺)