Renewable silver amalgam film electrodes in electrochemical stripping analysis—a review

Bobrowski, Andrzej; Królicka, Agnieszka; Bobrowski, Rafał

doi:10.1007/s10008-016-3275-7

Cited by 27 publications

(19 citation statements)

References 77 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of a concern on the environment the widespreadly utilized hanging mercury drop and mercury film electrodes were replaced by gold , modified carbon paste or other carbon materials electrodes , electrodes modified with metals more eco‐friendly than mercury on various substrates and array of iridium microdisks for determination of copper traces. In view of the fact that preparation of chemically modified electrodes is usually time‐consuming process, simple electrochemical modification of various substrates with metal films seems to be a convenient alternative.…”

Section: Introductionmentioning

confidence: 99%

Sensitive Anodic Stripping Voltammetric Copper Ions Determination Performed in Double Deposition and Double Stripping Steps System for Real Water Samples Analysis

Gęca

Ochab

2020

Electroanalysis

View full text Add to dashboard Cite

The article reports on utilization of double deposition and stripping steps for increasing sensitivity of Cu(II) determination by anodic stripping voltammetry (ASV) at two lead film working electrodes. A significant preconcentration of copper was achieved thanks to utilization of a simple design of four electrodes system that gives possibility to perform one measurement cycle consisting of two deposition and two stripping steps. Due to the fact that deposition step is doubled, the concentration of Pb(II) needed to lead film electrodes formation was significantly reduced as compared to traditional procedures using three electrodes system. The analytical procedure of Cu(II) determination was optimized. The experimental factors: supporting electrolyte's pH and its concentration, lead ions concentration, potential and time of deposition at both working electrodes were studied. The Cu(II) peak current was linearly dependent on its concentration from 5×10−10 to 2×10−8 mol L−1 (deposition time of 270 and 160 s at the first and the second working electrode, respectively). The obtained detection limit for copper ions determination was 2.1×10−10 mol L−1. The described procedure was validated by analysis of two water certified reference materials. The described procedure was also utilized for real water sample analysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Sensitive Anodic Stripping Voltammetric Copper Ions Determination Performed in Double Deposition and Double Stripping Steps System for Real Water Samples Analysis

Gęca

Ochab

2020

Electroanalysis

View full text Add to dashboard Cite

show abstract

“…Square‐wave anodic stripping voltammetry (SWASV) is one of the most applicable techniques for such monitoring. In combination with SWASV, several different electrodes can be used for trace heavy metal detection . Stripping voltammetry in combination with mercury electrodes has superior analytical performance, but due to the problems associated with mercury waste, other alternatives that are less toxic and have comparative performance regarding trace heavy metal analysis are currently being sought.…”

Section: Introductionmentioning

confidence: 99%

Novel in situ Bi−Sb‐Film Electrodes for Trace Heavy Metal Analysis

Finšgar

Petovar

2018

Electroanalysis

View full text Add to dashboard Cite

This work reports on new in situ formed Bi−Sb‐film glassy carbon electrodes (Bi−SbFEs) with different Bi(III):Sb(III) mass concentration ratios (1 : 9, 2 : 8, 3 : 7, 4 : 6, 5 : 5, 6 : 4, 7 : 3, 8 : 2, 9 : 1) and at two different total mass concentrations of Bi(III) and Sb(III), i. e. 0.5 and 1.0 mg/L. The analytical performance of these Bi−SbFEs was compared with Bi‐film (BiFE) and Sb‐film (SbFE) electrodes in 0.1 M acetate buffer solution. All combinations of Bi−SbFEs were selective for Zn(II), Cd(II), and Pb(II) detection. Bi−SbFEs showed linear concentration ranges for Zn(II), Cd(II), and Pb(II) substantially wider than that for BiFE. Moreover, the method's sensitivities can be substantially improved by using different Bi−SbFEs compared with BiFE and SbFE. Most of the Bi−SbFE methods provided satisfactory recovery for Cd(II) determination, many of them also for Pb(II), whereas for Zn(II) only a few methods provided recovery values within the 80.0–120.0 % recovery range. The precision of different Bi−SbFEs were satisfactory for Pb(II) and Cd(II) with an RSD lower than 20.0 %. Accumulation time optimisation resulted in lower LOD and LOQ, higher sensitivity. Finally, electrochemical impedance spectroscopy was employed for the first time to characterise the electroanalytical behaviour of an SbFE. The latter analysis was employed to compare the electrode's properties with pure BiFE and pure GCE, and to show when the system is under a kinetic‐ and/or diffusion‐controlled process.

show abstract

“…Mercury electrodes remain the best sensors in terms of analytical performance in stripping voltammetry . However, due to restrictions pertaining to the use of toxic mercury, there is great interest in replacing mercury electrodes with environment‐friendly solid electrodes.…”

Section: Introductionmentioning

confidence: 99%

Tellurium Film Electrodes Deposited on Carbon and Mesoporous Carbon Screen‐printed Substrates for Anodic Stripping Voltammetric Determination of Copper

et al. 2018

Self Cite

View full text Add to dashboard Cite

The performance of screen‐printed electrodes modified in situ with tellurium film for the anodic stripping voltammetric (ASV) determination of Cu(II) is reported. It was found that two types of screen‐printed substrates, namely carbon and mesoporous carbon, were optimal for this application. The selected in situ tellurium film modified electrodes were applied for the square wave ASV determination of copper at μg L−1 concentration levels. Well‐defined and reproducible Cu oxidation stripping peaks were produced at a potential more negative than the anodic dissolution of tellurium. The highest sensitivity of Cu determination was achieved in 0.05 M HCl containing 50 μg L−1 Te(IV) after 300 s of accumulation at −0.5 V. Using the optimized procedure, a linear range from 2 to 35 μg L−1 of Cu(II) was obtained with a detection limit of 0.5 μg L−1 Cu(II) (S/N=3) for 300 s of deposition time. Both sensors, carbon TeF‐SPE and mesoporous carbon TeF‐SPE, were successfully applied for the quantification of Cu in a certified reference surface water sample.

show abstract

Renewable silver amalgam film electrodes in electrochemical stripping analysis—a review

Cited by 27 publications

References 77 publications

Sensitive Anodic Stripping Voltammetric Copper Ions Determination Performed in Double Deposition and Double Stripping Steps System for Real Water Samples Analysis

Sensitive Anodic Stripping Voltammetric Copper Ions Determination Performed in Double Deposition and Double Stripping Steps System for Real Water Samples Analysis

Novel in situ Bi−Sb‐Film Electrodes for Trace Heavy Metal Analysis

Tellurium Film Electrodes Deposited on Carbon and Mesoporous Carbon Screen‐printed Substrates for Anodic Stripping Voltammetric Determination of Copper

Contact Info

Product

Resources

About