Electrochemical behavior of lead(II) at poly(phenol red) modified glassy carbon electrode, and its trace determination by differential pulse anodic stripping voltammetry

Yang, Gongjun; Qu, Xi-Long; Shen, Ming; Wang, Chengyin; Qu, Qishu; Hu, Xiaoyun

doi:10.1007/s00604-007-0881-1

Cited by 33 publications

(16 citation statements)

References 27 publications

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“…The linear regression equation was: I pa ¼ 12:4107C À 0:9342 (I pa , the anodic peak current, μA; C, the concentration of the Pb 2+ , nM), with a correlation coefficient of 0.999. The amperometric response to Pb(II) is linear in the range from 0.10 to 44 nM, and the detection limit is 0.04 nM, which was lower than that of other modified electrodes [7,10,39,40] (Table 1).…”

Section: Amperometric Response To Lead Ionmentioning

confidence: 89%

Iodide-induced adsorption of lead(II) ion on a glassy carbon electrode modified with ferroferric oxide nanoparticles

Yang

Dai

2012

Microchim Acta

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Spherical Fe 3 O 4 nanoparticles (NPs) were prepared by hydrothermal synthesis and characterized by scanning electron microscopy and X-ray diffraction. A glassy carbon electrode was modified with such NPs to result in a sensor for Pb(II) that is based on the strong inducing adsorption ability of iodide. The electrode gives a pair of well-defined redox peaks for Pb(II) in pH 5.0 buffer containing 10 mM concentrations of potassium iodide, with anodic and cathodic peak potentials at −487 mV and −622 mV (vs. Ag/AgCl), respectively. The amperometric response to Pb(II) is linear in the range from 0.10 to 44 nM, and the detection limit is 40 pM at an SNR of 3. The sensor exhibits high selectivity and reproducibility.

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Section: Amperometric Response To Lead Ionmentioning

confidence: 89%

Iodide-induced adsorption of lead(II) ion on a glassy carbon electrode modified with ferroferric oxide nanoparticles

Yang

Dai

2012

Microchim Acta

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“…The sensitivity is not lower than that of complicated modified electrode 4,10,11,14,[29][30][31] or graphiteepoxy composite electrode. 9 Therefore, it is an attractive and very promising option for ultratrace metals analysis in seawater with two great advantages: the avoidance of harmful mercury and the avoidance of time-consuming procedures for pretreating water samples.…”

Section: Discussionmentioning

confidence: 99%

“…Though the sensitivity of the conventional disk glassy carbon electrode (GCE) isn't satisfactory towards the monitoring of trace amount of heavy metals, some methods based on modified GCEs have been studied by far. 4,[11][12][13][14] To the best of our knowledge, there isn't report on the performance of determining lead using a GCE with large electrochemical area, though the stability and reproducibility of a GCE are obvious better than a modified electrode. This paper aimed to give a first-time report on the electrochemical determination of Pb 2+ in artifical seawater and real seawater by utilizing a novel columnar glassy carbon electrode (CGCE), which has a prodigious active area, allowing for an attractive high sensitivity by differential pulse stripping voltammetry (DPSV) technique.…”

Section: Introductionmentioning

confidence: 99%

“…One of the main advantages of this technique is that the metal ion is concentrated on the working electrode during the deposition time, with no need for a preconcentration step by solvent extraction or other means. [2][3][4] Commonly, mercury-based electrodes are used as working electrodes due to their ability to form amalgams, allowing for preconcentration of the heavy metal ions prior to their determination by voltammetric stripping methods. 2,[5][6][7][8] However, in recent years, the potential dangers associated with mercury have brought about a growing interest in the use of environmentally-friendly, mercury-free electrodes.…”

Section: Introductionmentioning

confidence: 99%

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Sensitive Determination of Trace Pb²⁺ in Seawater Using Columnar Glassy Carbon Electrode

Zhang

Shao-sai

Cui

et al. 2011

J Chinese Chemical Soc

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We herein report a mercury-free approach for the sensitive determination of trace Pb 2+ in seawater using differential pulse stripping voltammetric (DPSV) method with a novel columnar glassy carbon electrode (CGCE). Compared with the conventional disk glassy carbon electrode with the same diameter, it has much larger electrochemical area (0.627 ± 0.003 cm 2 ). The CGCE shows good accumulation ability and consequently acceptable behavior which makes it suitable as a working electrode in the DPSV determination of Pb 2+ with the great advantage of the avoidance of harmful mercury. Using acidified artificial seawater as supporting electrolyte, there was a good linear relationship between the peak currents and the concentration of Pb 2+ in the range of 0.6~140.0 mg L -1 with a detection limit of 0.3 µg/L (S/N = 3) when the accumulation time was 300 s. The method was employed to determine trace levels of Pb 2+ in real seawater samples successfully.

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“…e modified electrode with increased surface is due to the presence of ZIF-8. e larger effective surface area results in more active sites and leads to a higher signal-to-nose ratio [42].…”

Section: Effects Of Scanmentioning

confidence: 99%

Synthesis and Voltammetric Determination of Pb(II) Using a ZIF-8-Based Electrode

Khiếu

Thanh

Thien

et al. 2018

Journal of Chemistry

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Zeolite imidazole framework-8 (ZIF-8) was prepared by the hydrothermal process. e obtained ZIF-8 was a characteristic of X-ray-diffraction (XRD), transmission electron microscope (TEM), thermal gravity-differential thermal analysis (TG-DTA), and dynamic light scattering (DLS). e obtained ZIF-8 possessed large specific area and was highly dispersed. Its morphology consisted of nanospherical particles with 30-50 nm in diameter. Chemical stability of ZIF-8 in different conditions was studied.e ZIF-8 was used as an electrode modifier for the determination of trace levels of lead. e parameters including solvents and solution pH were investigated. e repeatability, reproducibility, accuracy, linear range, limit of detection, and limit of quantitation were also addressed. e results showed that ZIF-8 is a potential electrode modifier for differential pulse anodic stripping method to determine Pb(II) in aqueous solution.

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Electrochemical behavior of lead(II) at poly(phenol red) modified glassy carbon electrode, and its trace determination by differential pulse anodic stripping voltammetry

Cited by 33 publications

References 27 publications

Iodide-induced adsorption of lead(II) ion on a glassy carbon electrode modified with ferroferric oxide nanoparticles

Iodide-induced adsorption of lead(II) ion on a glassy carbon electrode modified with ferroferric oxide nanoparticles

Sensitive Determination of Trace Pb²⁺ in Seawater Using Columnar Glassy Carbon Electrode

Synthesis and Voltammetric Determination of Pb(II) Using a ZIF-8-Based Electrode

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Electrochemical behavior of lead(II) at poly(phenol red) modified glassy carbon electrode, and its trace determination by differential pulse anodic stripping voltammetry

Cited by 33 publications

References 27 publications

Iodide-induced adsorption of lead(II) ion on a glassy carbon electrode modified with ferroferric oxide nanoparticles

Iodide-induced adsorption of lead(II) ion on a glassy carbon electrode modified with ferroferric oxide nanoparticles

Sensitive Determination of Trace Pb2+ in Seawater Using Columnar Glassy Carbon Electrode

Synthesis and Voltammetric Determination of Pb(II) Using a ZIF-8-Based Electrode

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Sensitive Determination of Trace Pb²⁺ in Seawater Using Columnar Glassy Carbon Electrode