Stripping voltammetric determination of mercury(II) and lead(II) using screen-printed electrodes modified with gold films, and metal ion preconcentration with thiol-modified magnetic particles

Mandil, Adil; Idrissi, Laila; Amine, Aziz

doi:10.1007/s00604-010-0329-x

Cited by 108 publications

(51 citation statements)

References 35 publications

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“…In Table 1 the detection limit of the determination of mercury obtained from a related technique using stripping voltammetry is shown. [19][20][21][22][23] The detection limit of the present method is observed to be better or comparable with the literature reports in similar fields. Additionally, the present method is devoted more to the determination of mercury in the presence of high concentrations of Co 2+ .…”

Section: Resultssupporting

confidence: 84%

Voltammetric Determination of Trace Levels of Hg in Ayurvedic Medicine and in Cobalt-Containing Samples Using a Carbon Paste Electrode

2010

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Section: Resultssupporting

confidence: 84%

Voltammetric Determination of Trace Levels of Hg in Ayurvedic Medicine and in Cobalt-Containing Samples Using a Carbon Paste Electrode

2010

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“…Ultrasounds frequency (KHz) 37 80 Tap water 106 (11) 108 (7) Bottled water 98 (11) 103 (15) River water 97 (10) 98 (9) Wastewater 97 (12) 95 (9) …”

Section: Discussionmentioning

confidence: 99%

“…It is important to point out that the sensitivity and LOD of the proposed method are significantly better than those obtained in a previous work [14] (i.e., 0.120 µA µg -1 L and 3.3 µg L -1 , respectively) using the same kind of SPCnAuEs under equal conditions but without sample preparation. In addition, just a few of the reported works using SPEs have shown equal or lower LOD than 0.2 µg L -1 [10,12,14], however, standard…”

Section: Analytical Figures Of Meritmentioning

confidence: 98%

“…However, tedious and time consuming cleaning steps can be avoided with the use of screen-printed electrodes (SPEs), which can be disposable after a single use due to their high cost effectiveness. Several methods based on SPEs have been reported for the determination of mercury in different water samples, including the use of bare gold SPEs [8], and modified SPEs with carbon nanomaterials [9][10][11], gold films [12,13], gold nanoparticles [14,15], nanohybrid materials [14] and chelating agents [16]. As can be seen in Table 1, the vast majority of the reported works include a preconcentration step over the working electrode (i.e., deposition time) followed by anodic stripping voltammetry.…”

Section: Introductionmentioning

confidence: 99%

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Screen-printed electrode based electrochemical detector coupled with ionic liquid dispersive liquid–liquid microextraction and microvolume back-extraction for determination of mercury in water samples

Fernández

Vidal

Martín‐Yerga

et al. 2015

Talanta

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Canals, Agustín Costa-García, Screen-printed electrode based electrochemical detector coupled with Ionic liquid dispersive liquid-liquid microextraction and microvolume back-extraction for determination of Mercury in water samples, Talanta, http://dx.doi.org/10. 1016/j.talanta.2014.11.069 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractA novel approach is presented, whereby gold nanostructured screenprinted carbon electrodes (SPCnAuEs) are combined with in-situ ionic liquid formation dispersive liquid-liquid microextraction (in-situ IL-DLLME) and microvolume back-extraction for the determination of mercury in water samples.In-situ IL-DLLME is based on a simple metathesis reaction between a watermiscible IL and a salt to form a water-immiscible IL into sample solution.Mercury complex with ammonium pyrrolidinedithiocarbamate is extracted from sample solution into the water-immiscible IL formed in-situ. Then, an ultrasound-assisted procedure is employed to back-extract the mercury into 10 µL of a 4 M HCl aqueous solution, which is finally analyzed using SPCnAuEs. ) and a coefficient of variation of 13% was obtained in both cases. The performance of the proposed methodology was evaluated in real-world water samples including tap water, bottled water, river water and industrial wastewater. Relative recoveries between 95 and 108% were obtained.

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“…SPE enables detection method incorporated in portable systems, an important requirement for real-time, non-invasive analysis of a sample, without alteration of the "natural environmental conditions". The recent possibility of designing and fabricating SPE, including microelectrodes and chemically modified electrodes and incorporating these in a variety of highly sensitive biosensors, has increased industrial, clinical, and environmental interest [15,18]. SPEs are more versatile in practical preparation machine-controlled manufacturing thus enabling possible mass production at low costs, small dimensions, and planar configuration [15].…”

Section: Micro-engineering and Micro-fabrication Technologymentioning

confidence: 99%

Environmental Monitoring by Eco-Friendly-Fabricated Carbon-Modified Electrode Sensors

Abdullah¹

2017

IJBSBE

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Environmental monitoring is necessary to understand and evaluate the extent of pollution and eco-system disturbances and to work out remedial strategies. Electrochemical methods are attractive for environmental monitoring due to their capability for remote and in situ applications. The electrode-based sensors are prone to fine-tuning and modification to improve the selectivity and sensitivity for trace analystes detection. Different types of modifiers have been applied which include hydroxyapatite, montmorillonite, ionic liquids, chitosan, bismuth and plant-based materials and their composites with graphites can be optimized utilizing cyclic and square-wave voltammetric techniques. These may have wide appeal in the analyses and detection of heavy metal ions, pharmaceuticals or biomolecules, airborne particulate matter, fly ash, rocks, minerals and sediments. Screen-printed electrodes especially enable portable systems for real-time, non-invasive analysis of a sample. The fabrication into microelectrodes and the preparation in machine-controlled manufacturing make screen-printed electrode more versatile for mass production at low costs. The small dimensions, and planar configuration with lab-on-chip, point-ofcare applications are attractive features for the future development of eco-friendlybased sensors for multi-dimensional utilities.

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Stripping voltammetric determination of mercury(II) and lead(II) using screen-printed electrodes modified with gold films, and metal ion preconcentration with thiol-modified magnetic particles

Cited by 108 publications

References 35 publications

Voltammetric Determination of Trace Levels of Hg in Ayurvedic Medicine and in Cobalt-Containing Samples Using a Carbon Paste Electrode

Voltammetric Determination of Trace Levels of Hg in Ayurvedic Medicine and in Cobalt-Containing Samples Using a Carbon Paste Electrode

Screen-printed electrode based electrochemical detector coupled with ionic liquid dispersive liquid–liquid microextraction and microvolume back-extraction for determination of mercury in water samples

Environmental Monitoring by Eco-Friendly-Fabricated Carbon-Modified Electrode Sensors

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