Simultaneously determination of trace Cd2+ and Pb2+ based on l-cysteine/graphene modified glassy carbon electrode

Zhou, Wenshu; Li, Caihong; Sun, Chong; Yang, Xiaodi

doi:10.1016/j.foodchem.2015.07.042

Cited by 120 publications

(23 citation statements)

References 33 publications

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“…The preparation strategy of injectionmolding has been reported in previous studies, in addition to its merits and demerits in the mass production of polymer-based lab-on-a-chip analytical apparatuses [17][18][19]. Additionally, the feasibility of the plastic/carbon fiber composite electrodes in electrochemical analysis has been confirmed in previous literature [20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 57%

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Li¹,

Economics²

2018

International Journal of Electrochemical Science

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The present study reports the fabrication of a carbon nanotube/Nafion composite film (MWNT/Nafion)-modified glassy carbon electrode (GCE) along with its excellent performance in the analysis of Pb 2+ (favorable catalytic activity, large surface area, high cation exchange capacity, and strong adsorption ability). The stripping peak current of Pb 2+ was greatly increased at the MWNT/Nafion-coated GCE compared with the bare and Nafion-coated GCEs. The optimization of different parameters was also carried out, including optimization of the accumulation time, accumulation potential, supporting electrolyte, and MWNT/Nafion suspension volume. Therefore, our developed electrode can be used in the analysis of Pb 2+ in real hot spring water samples.

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Section: Introductionmentioning

confidence: 57%

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Li¹,

Economics²

2018

International Journal of Electrochemical Science

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“…The use of Cd 2+ concentration before and after adsorption of ICP were determined [3], the results showed that the modified diatomite on the removal rate of Cd 2+ was 98.69%, while the unmodified diatomite on the removal rate of Cd 2+ was 58.30%, showed that the modified diatomite adsorption effect of Cd 2+ was obviously improved.…”

Section: Adsorption Resultsmentioning

confidence: 99%

Study on Adsorption of Cd2+ by Manganese Modified Diatomite

Xu¹,

Nanchun²,

Xie³

et al. 2017

Proceedings of the 2nd 2016 International Conference on Sustainable Development (ICSD 2016)

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Abstract-Diatomaceous earth itself has a large specific surface area, porous structured, large aperture and uniform, modest, stable skeleton structure of hole wall, easy to modify, high adsorption capacity, good thermal stability, mechanical stability and water, etc. Make it will benefit the adsorption of heavy metal ions, but single diatomite adsorbing heavy metal ions adsorption rate is not high, this article with manganese oxide modified diatomite, used for adsorption of Cd2+, with a series of characterization methods analyze adsorption principle..Provide a theoretical study for the adsorption of heavy metal ions principle

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“…The lower limits of detection obtained for Cd 2+ and Pb 2+ in the simultaneous analysis compared to their individual determinations indicates that the efficiency of the modified electrode in more than one metal ion. Table compares the LOD of previously reported modified electrodes and the MC/MA/Nafion/GC electrode for the detection of Cd 2+ and Pb 2+ . The higher sensitivity of the modified electrode is due to i) high surface area and suitable pore structure of the mesoporous carbon raises physisorption process of metal ions, ii) mefenamic acid contains inherent acid and amine functional group forms coordination complex with metal ions iii) the cation exchanging capacity of nafion.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Determination of Cd²⁺ and Pb²⁺ Using NSAID‐mefenamic Acid Functionalized Mesoporous Carbon Microspheres Modified Glassy Carbon Electrode

et al. 2017

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This paper describes the electrochemical behaviors of Cd2+ and Pb2+ on the proposed mesoporous carbon microspheres/mefenamic acid/nafion modified glassy carbon electrode (MC/MA/Nafion/GC) studied by square wave anodic stripping voltammetry (SWASV). The prepared material is characterized by XRD, SEM, FTIR, RAMAN and BET analysis. Experimental parameters, such as the deposition potential and time, the pH value of buffer solution were optimized. Under the optimized conditions, the electrode responded linearly to Cd2+ and Pb2+ in the concentration range from 50 to 300 nM, and the detection limits were 24.2 and 11.26 nM respectively. The sensitivity determined was 0.0623 μA/nM (Cd2+) and 0.192 μA/nM (Pb2+). Multiple metal ion detection with clear demarcation of peaks was produced by the electrode. Moreover, the modified electrode has possessed good selectivity and reproducibility of Cd2+ and Pb2+ detection. We also investigated the interference of various anions and surfactants for the detection of Cd2+ and Pb2+ ions. Finally the modified electrode was used to detect the presence of metal ions in practical samples and the results obtained are comparatively good with respect to AAS.

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Simultaneously determination of trace Cd2+ and Pb2+ based on l-cysteine/graphene modified glassy carbon electrode

Cited by 120 publications

References 33 publications

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Study on Adsorption of Cd2+ by Manganese Modified Diatomite

Electrochemical Determination of Cd²⁺ and Pb²⁺ Using NSAID‐mefenamic Acid Functionalized Mesoporous Carbon Microspheres Modified Glassy Carbon Electrode

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Simultaneously determination of trace Cd2+ and Pb2+ based on l-cysteine/graphene modified glassy carbon electrode

Cited by 120 publications

References 33 publications

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Electrochemical determination of lead(II) ions in hot spring water based on a multi-walled carbon nanotube-modified glassy carbon electrode

Study on Adsorption of Cd2+ by Manganese Modified Diatomite

Electrochemical Determination of Cd2+ and Pb2+ Using NSAID‐mefenamic Acid Functionalized Mesoporous Carbon Microspheres Modified Glassy Carbon Electrode

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Electrochemical Determination of Cd²⁺ and Pb²⁺ Using NSAID‐mefenamic Acid Functionalized Mesoporous Carbon Microspheres Modified Glassy Carbon Electrode