Determination of trace Pb(II), Cd(II) and Zn(II) using differential pulse stripping voltammetry without Hg modification

Qiu, Lin; Hong-mei, Lin; Zhang, YuanHui; Rong, Mingcong; Ke, HuiXian; Tang, Xinhua; Chen, Xi

doi:10.1007/s11426-013-4922-9

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…Depending on the target of analysis, electrode material has to be chosen in order to obtain a good analytical signal. Popular electrode materials are mercury , bismuth , platin , gold , carbon , etc.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Nguyen

Cao²,

Pham

et al. 2019

Electroanalysis

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Platinum nanoflowers modified glassy carbon electrodes (PtNFs/GCE) was fabricated simply for lead determination in water samples. The modified electrodes were prepared by electrodeposition in hexachloroplatinic acid solution at constant potential. The influence of deposition time and potential on surface morphology, chemical composition, electrochemical properties of electrode were investigated. At À 0.2 V of potential and 150 s of deposition duration, platinum developed as nanoflower shape and scattered densely all over the glassy carbon surface, producing the largest electrochemically active surface areas. The highest differential pulse stripping voltammetry (DPSV) signal of lead was obtained by using the prepared electrode. Under optimized experimental condition of electrolyte, accumulation potential and time, the peak current was found to be linear proportion to lead concentration in range of 1 to 100 μg L À 1 (slope = 0.371) with a limit of detection of 0.398 μg L À 1 . The method has good repeatability and reproducibility with relative standard deviations of 1.47 % and 4.83 %, respectively. The modified PtNFs/GCE also demonstrated an excellent long-term stability with only 9 % decrease in Pb peak current over 30 days. Moreover, the performance of the modified PtNFs/GCE in determination of Pb(II) in two industrial wastewaters was good agreement with data obtained by a graphite furnace atomic absorption spectrometry (GFAAS) method.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Nguyen

Cao²,

Pham

et al. 2019

Electroanalysis

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“…In addition, electrochemical methods were also applied for the determination of Cd 2+ and Pb 2+ because electrochemical sensing is superior in terms of rapidness, handling convenience, low cost and in situ monitoring. For example, bismuth film‐modified glassy carbon electrode (Bi/GCE) 6, 7, carbon nanotubes (CNTs) and Bi composite film‐modified GCE (CNTs‐Bi/GCE) 8–10, reduced graphene oxides (RGO) and Bi hybrid film‐modified GCE (RGO‐Bi/GCE) 11, 12 were successfully developed for the electrochemical detection of Cd 2+ and Pb 2+ .…”

Section: Introductionmentioning

confidence: 99%

Highly‐sensitive Electrochemical Sensor for Cd²⁺ and Pb²⁺ Based on the Synergistic Enhancement of Exfoliated Graphene Nanosheets and Bismuth

Wang

Chen

et al. 2015

Electroanalysis

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Graphene nanosheets (GS) were prepared via ultrasonic exfoliation, and used to modify glass carbon electrode (GCE). Compared with GCE, the GS‐modified GCE (GS/GCE) greatly increased the anodic stripping peak currents of Cd2+ and Pb2+. Moreover, the response signals of Cd2+ and Pb2+ on GS/GCE further enhanced remarkably in the presence of Bi3+. Based on the synergistic enhancement effects of GS and Bi3+, a novel electrochemical sensor was developed for Cd2+ and Pb2+. The detection limits were 0.35 and 0.045 μg L−1 for Cd2+ and Pb2+. It was used in food sample analysis, and the accuracy was tested by ICP‐MS.

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Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions

Rosolina

Chambers

Lee

et al. 2015

Analytica Chimica Acta

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Determination of trace Pb(II), Cd(II) and Zn(II) using differential pulse stripping voltammetry without Hg modification

Cited by 4 publications

References 26 publications

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Highly‐sensitive Electrochemical Sensor for Cd²⁺ and Pb²⁺ Based on the Synergistic Enhancement of Exfoliated Graphene Nanosheets and Bismuth

Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions

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Determination of trace Pb(II), Cd(II) and Zn(II) using differential pulse stripping voltammetry without Hg modification

Cited by 4 publications

References 26 publications

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Highly‐sensitive Electrochemical Sensor for Cd2+ and Pb2+ Based on the Synergistic Enhancement of Exfoliated Graphene Nanosheets and Bismuth

Direct determination of cadmium and lead in pharmaceutical ingredients using anodic stripping voltammetry in aqueous and DMSO/water solutions

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Product

Resources

About

Highly‐sensitive Electrochemical Sensor for Cd²⁺ and Pb²⁺ Based on the Synergistic Enhancement of Exfoliated Graphene Nanosheets and Bismuth