Ultramicroband Array Electrode. 1. Analysis of Mercury in Contaminated Soils and Flue Gas Exposed Samples Using a Gold-Plated Iridium Portable System by Anodic Stripping Voltammetry

Li, Xiao; Dietze, William; Nyasulu, Frazier; Mibeck, Blaise A.F.

doi:10.1021/ac052112k

Cited by 20 publications

(23 citation statements)

References 13 publications

(17 reference statements)

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“…The presence of chloride (Cl -) ion negatively affected it and the method gave only 0.6 µg/L limit of detection after 6 min deposition time (Nolan and Kounaves 1999). Gold plated iridium nano-band array ultra-microelectrode detected Hg(II) in soil up to 0.5 µg/L concentration with 4 min deposition time (Xiao et al 2006). Screen printed silver electrodes (SPAgE) performed indirect determination of Hg(II) in cosmetic samples with detection limit of 98 µg/L (Chiu et al 2008).…”

Section: Other Electrode Materialsmentioning

confidence: 99%

Electrochemical determination of inorganic mercury and arsenic—A review

Zaib

Athar

Saeed

et al. 2015

Biosensors and Bioelectronics

122

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Section: Other Electrode Materialsmentioning

confidence: 99%

Electrochemical determination of inorganic mercury and arsenic—A review

Zaib

Athar

Saeed

et al. 2015

Biosensors and Bioelectronics

122

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“…Several kinds of gold electrodes were used for the voltammetric determination of mercury: solid [e.g., 10,29], film [e.g., 14,21], microwire [e.g., 30,31,32], fiber [e.g., 33], ultramicroband array [34] gold electrodes; nevertheless, to our knowledge, published studies concerning the use of gold nanoparticles are limited to the work of Gao et al [35] who electrodeposited gold nanoparticles onto a gold electrode, followed by a modification with a mercaptoethanesulfonate monolayer.…”

Section: Introductionmentioning

confidence: 99%

Determination of Mercury by Anodic Stripping Voltammetry with a Gold Nanoparticle‐Modified Glassy Carbon Electrode

et al. 2007

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The aim of this work is the development of a procedure for the determination of aqueous Hg(II) by anodic stripping voltammetry at a gold nanoparticle-modified glassy carbon electrode (AuNPs-GCE). The signal of aqueous Hg(II) was measured in the square wave mode; the effect of potential scan parameters, deposition potential and deposition time on the analytical signal was examined. The supporting electrolyte was 0.06 M HCl. The repeatability, the linearity, the accuracy, the detection limit of the procedure and the interferences of other cations and of anions were evaluated. The performance of the AuNPs-GCE was compared with those of a solid (SGE) and a film (FGE) gold electrode: the AuNPs-GCE showed to provide lower detection limits and higher repeatability. The renewable surface permits to eliminate memory effects, to maintain a stable baseline and response, and to avoid frequent mechanical cleaning steps. The applicability of the AuNPs-GCE for Hg(II) determination in drinking waters, sediments and pharmaceuticals was demonstrated.

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“…77 The array was composed of thin bands of gold-plated iridium electrodes (0.2 by 6.0 μm). Under ideal conditions, the array was able to detect mercury concentrations as low as 2.5 nM in dilute acid.…”

Section: Stripping Voltammetrymentioning

confidence: 99%

Electrochemical Sensors

2013

Encyclopedia of Biophysics

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This review covers publications related to electrochemical sensors that appeared in print during the years 2006 and 2007. The focus of the review is on the development of electrochemical sensing principles including potentiometric and chronopotentiometric sensors, reference electrodes, voltammetric sensors, and electrochemical biosensors.References were collected by searching electrochemical sensor-related work using ACS SciFinder and ISI Science Citation Index. In addition, the tables of contents of several analytical journals were reviewed manually to identify relevant articles. Only original and review articles written in English were considered. Patents, book chapters or book series, and conference proceedings or abstracts were not considered for this review. The number of references was limited to 200 and as a result only a fraction of relevant work is covered. Specifically, the review was written to focus on fundamental aspects of electrochemical sensor research emphasizing new chemical concepts and not simply the application of electrochemical sensors. On the basis of these guidelines, several hybrid systems whereby electrochemical detection schemes were combined with a separation technique such as microdialysis, electrophoresis, chromatography, and lab-on-a-chip were not included in this review.We ask that our readers note that our review is not a comprehensive coverage of the above topics, but rather a snapshot of research conducted over the past two years. Obviously, electrochemical sensor research is still expanding and of interest to a number of disciplines beyond traditional chemistry. As such, it was not possible to cover all manuscripts published. We apologize to the authors of manuscripts that were not included in this review. POTENTIOMETRIC SENSORS ReviewsBakker and Pretsch published a broad review on modern potentiometry describing techniques for improving sensor performance, miniaturizing sensor platforms, and expanding the application of potentiometric sensors for environmental trace analysis and biosensing (98 citations). 1 Likewise, Pretsch provided a general overview on ion-selective electrodes (ISEs) focusing on improving detection limits and understanding non-classical (i.e., non-equilibrium) potentiometry for monitoring clinical relevant polyions such as heparin and protamine (81 citations). 2 De Marco et al. reviewed ISE methodologies for the analysis of trace metals and anions (e.g., F − , CN − , NO 3 − , NO 2 − , and Cl − ) in environmental samples. 3

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Ultramicroband Array Electrode. 1. Analysis of Mercury in Contaminated Soils and Flue Gas Exposed Samples Using a Gold-Plated Iridium Portable System by Anodic Stripping Voltammetry

Cited by 20 publications

References 13 publications

Electrochemical determination of inorganic mercury and arsenic—A review

Electrochemical determination of inorganic mercury and arsenic—A review

Determination of Mercury by Anodic Stripping Voltammetry with a Gold Nanoparticle‐Modified Glassy Carbon Electrode

Electrochemical Sensors

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