Simultaneous determination of cadmium(II), lead(II) and copper(II) by using a screen-printed electrode modified with mercury nano-droplets

Song, Wei; Zhang, Lei; Shi, Lei; Li, Dawei; Li, Yang; Long, Yi‐Tao

doi:10.1007/s00604-010-0354-9

Cited by 79 publications

(30 citation statements)

References 34 publications

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“…In addition, chitosan can be used for the homogeneous dispersion of MWCNTs [45] for modified SPEs where after mercury is deposited, forming a random array of mercury nano-droplets. This sensor was used for the simultaneous determination of lead, cadmium and copper in river water.…”

Section: Mercury-coated Spesmentioning

confidence: 99%

Screen-printed electrodes for environmental monitoring of heavy metal ions: a review

et al. 2015

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Heavy metals such as lead, mercury, cadmium, zinc and copper are among the most important pollutants because of their non-biodegradability and toxicity above certain thresholds. Here, we review methods for sensing heavy metal ions (HMI) in water samples using screenprinted electrodes (SPEs) as transducers. The review (with 107 refs.) starts with an introduction into the topic, and this is followed by sections on (a) mercury-coated SPEs, (b) bismuth-coated SPEs, (c) gold-coated SPEs (d) chemically modified and non-modified carbon SPEs, (e) enzyme inhibition-based SPEs, and (f) an overview of commercially available electrochemical portable heavy metal analyzers. The review reveals the significance of SPEs in terms of decentralized and of in situ analysis of heavy metal ions in environmental monitoring.

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Section: Mercury-coated Spesmentioning

confidence: 99%

Screen-printed electrodes for environmental monitoring of heavy metal ions: a review

et al. 2015

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“…Compared to the above four methods, electrochemical methods afford high sensitivity and sufficient accuracy without the need for expensive and specialized equipment. Long, for example, presented a screen-printed electrode modified with mercury nano-droplets for simultaneous determination of cadmium(II), lead(II) and copper(II) [13,15]. In Fei's work [14,16], a composite film made from a thiol-functionalized mesoporous molecular sieve and anionic liquids was introduced for use in a voltammetric sensor for Cd(II).…”

Section: Introductionmentioning

confidence: 99%

“…A linear response is obtained in the concentration range of 29 nM to 0.87 mM. Due to requirements of determination of heavy metals lower than the quantificational limits of instrumental techniques and interference effects of highly saline samples, separation and preconcentration techniques are used prior to the step of detecting heavy metal ions [13][14][15][16][17][18]. Separation and enrichment of trace amounts of cadmium in water can be obtained by extraction or coprecipitation.…”

Section: Introductionmentioning

confidence: 99%

Determination of cadmium(II) using glassy carbon electrodes modified with cupferron, ß-naphthol, and multiwalled carbon nanotubes

et al. 2012

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We report on a simple and reliable method for the determination of trace cadmium ion using a glassy carbon electrode (GCE) modified with cupferron, ß-naphthol and MWCNTs. The operational mechanism consists of several steps: first, the ligand cupferron on the modified electrode reacts with Cd 2+ ion to form a chelate compound. Next, this chelate is adsorbed by the carrier ß-naphthol following the principle of organic co-precipitation. Finally, the coprecipitated complex is detected by the GCE. This scheme is interesting because it combines preconcentration and electrochemical detection. Two linear responses are obtained, one in the concentration range of 5.0×10 −11 to 1.6×10 −8 M, the other in the range of 1.6×10 −8 to 1.42×10 −6 M, with a lower detection limit of 1.6×10 −11 M. This modified GCE does not suffer from significant interferences by Cu(II), Hg(II), Ag(I), Fe(III), Pb (II), Cr(III), Zn(II), NO 3− , Cl − , SO 4 2− ions and EDTA. The response of the electrode remained constant for at least 3 weeks of successive operation. The method presented here provides a new way for the simultaneous separation, enrichment, and electrochemical detection of trace cadmium ion.

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“…ASV also proposes many benefits including good sensitivity, easy availability and others. [8][9][10][11][12]. In addition, Gao et al reported a novel detection approach based on chromophore-decolorizing with free radical and application to photometric determination of copper with acid chrome dark blue [13].…”

Section: Introductionmentioning

confidence: 98%

A novel sensitive Cu(II) and Cd(II) nanosensor platform: Graphene oxide terminated p-aminophenyl modified glassy carbon surface

Gupta

Yola

Atar

et al. 2013

Electrochimica Acta

114

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Simultaneous determination of cadmium(II), lead(II) and copper(II) by using a screen-printed electrode modified with mercury nano-droplets

Cited by 79 publications

References 34 publications

Screen-printed electrodes for environmental monitoring of heavy metal ions: a review

Screen-printed electrodes for environmental monitoring of heavy metal ions: a review

Determination of cadmium(II) using glassy carbon electrodes modified with cupferron, ß-naphthol, and multiwalled carbon nanotubes

A novel sensitive Cu(II) and Cd(II) nanosensor platform: Graphene oxide terminated p-aminophenyl modified glassy carbon surface

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