The Silver Amalgam Film Electrode in Adsorptive Stripping Voltammetric Determination of Palladium(II) as Its Dimethyldioxime Complex

Bobrowski, Andrzej; Gawlicki, M.; Kapturski, Paweł; Mirčeski, Valentin; Spasovski, Filip; Zarębski, Jerzy

doi:10.1002/elan.200804336

Cited by 43 publications

(15 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the renewal of the amalgam-film-based sensor surface usually provides good reproducibility and repeatability of the analytical signal [40]. It has successfully been used in the determination of trace levels of some metals, such as zinc [35,43], copper [35], vanadium (V) [37], manganese (II) [38], molybdenum (VI) [39], uranium (VI) [40], chromium (VI) [41,42], cobalt, nickel [45], lead, cadmium [43], gallium [36] and palladium (II) [44]. In addition, this electrode is suitable for the determination of different organic compounds [46-52, 56, 57] with characteristic electroactive groups in their structures, such as nitro compounds [46][47][48], guanidine [49,50], quinone [57], some vitamins [56], pharmaceuticals like moroxydine [49] and doxorubicin [57], pesticides, e.g.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric behavior of erythromycin ethylsuccinate at a renewable silver-amalgam film electrode and its determination in urine and in a pharmaceutical preparation

Vajdle

Guzsvány

Škorić

et al. 2016

Electrochimica Acta

Self Cite

View full text Add to dashboard Cite

Voltammetric behavior of erythromycin ethylsuccinate at a renewable silver-amalgam film electrode and its determination in urine and in a pharmaceutical preparation, Electrochimica Acta http://dx.2 Graphical abstract 3 Highlights  Voltammetric characterization of erythromycin ethylsuccinate (EES) on Hg(Ag)FE  Trace level determination of EES by electroreduction based SWV and SW-AdSV methods  Protonation of the tertiary amino group supports the adsorption of EES on Hg(Ag)FE  1 H NMR confirms chemical shifting of tertiary amine methyl proton signals with pH  Comparative HPLC-DAD measurements were performed for the validation of the methods 4 AbstractErythromycin, a macrolide antibiotic, has similar antimicrobial spectrum to penicillin and it is widely used, especially in the treatment of patients who are allergic to penicillin.In this work, the application of a renewable silver-amalgam film electrode (Hg (Ag)FE) for the characterization and determination of erythromycin ethylsuccinate (EES), a widely used esterified form of this antibiotic, by means of cyclic voltammetry (CV) and square wave voltammetry (SWV) is presented. In the aqueous Britton-Robinson buffer (pH 5.0-9.0) that served as the supporting electrolyte, one reduction peak of EES was observed in the investigated potential range between -0.75 V and -1.80 V vs SCE, with peak potential maxima ranging from -1.59 V to -1.70 V, which strongly depended on the applied pH, as did the peak shape. For the analytical purposes the pH of 7.0 was selected, since in this electrolyte the EES peak was well-shaped and separated from the background current of the supporting electrolyte in both cases; in the direct cathodic SWV and in the case of square wave adsorptive stripping voltammetry (SW-AdSV). It was established, by the Ep-pH correlation, that protons strongly influenced the electrochemical reduction of EES. The CVs recorded between 0.025 -0.50 V s -1 at pH 7.0 confirmed that the electrode reaction is adsorption-controlled. Based on the series of 1 H NMR measurements it is proved that the tertiary amino group of EES is mainly in its protonated form at pH 7.0 which may lead, at appropriate accumulation potential and time, to the favored adsorption of the target ionic form of the analyte improving on such way the sensitivity of the SW-AdSV method.The optimized procedures resulted in stable SWV responses with good linear correlation in the EES concentration range from 4.53 to 29.8 µg mL -1 (LOD = 1.36 µg mL -1 ), and from 0.69 µg mL -1 to 2.44 µg mL -1 (LOD 0.21 µg mL -1 ) in the case of optimized SWAdSV. The relative standard deviation is below 1.5%. The reliability of the elaborated procedures and thus the accuracy of the obtained results were validated by comparing them with those obtained by means of HPLC-DAD measurements. The direct cathodic SWV method was successfully applied for the determination of EES in the pharmaceutical preparation Eritromicin ® , while SW-AdSV was applied in the case of the spiked urine sample.In both cases, the standard addition meth...

show abstract

Section: Introductionmentioning

confidence: 99%

Voltammetric behavior of erythromycin ethylsuccinate at a renewable silver-amalgam film electrode and its determination in urine and in a pharmaceutical preparation

Vajdle

Guzsvány

Škorić

et al. 2016

Electrochimica Acta

Self Cite

View full text Add to dashboard Cite

show abstract

“…The Hg(Ag)FE-c was utilized for the adsorptive stripping voltammetric determination of palladium(II) in the presence of dimethylglyoxime (DMG) and acetate buffer [50]. The procedure is based on the adsorptive preconcentration of the Pd(II)-dimethylglyoxime complex onto the Hg(Ag)FE-c at −0.45 V, followed by a square wave voltammetric scan in the negative direction.…”

Section: Adsorptive Stripping Voltammetrymentioning

confidence: 99%

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

Bobrowski

Królicka

Bobrowski³

2016

J Solid State Electrochem

Self Cite

View full text Add to dashboard Cite

The success of a voltammetric sensing procedure depends mainly on the proper choice of the working electrode. This is because its ability to accumulate the analyte determines the sensitivity of the method. The main criterion of the selection of the proper working electrode is the available potential window. A variety of conductive materials have been used for the preparation of working electrodes. Of these, two kinds of mercury electrodes-hanging mercury drop and film-were used because of their excellent voltammetric performance and, in particular, their high overpotential of hydrogen reduction. The significant drawbacks of mercury electrodes, however, are the toxicity of the material and the instability of liquid mercury films. To overcome these disadvantages, less toxic mercury-containing materials have been used, such as amalgams and amalgam film electrodes. This group includes renewable silver amalgam film electrodes used for electrochemical stripping sensing purposes. These electrodes have successfully been applied for anodic, adsorptive, cathodic, catalytic voltammetric, and potentiometric stripping determination of trace amounts of inorganic cations and organic compounds in various natural matrices. In this review, the electrode design, characteristics, and application of two kinds of renewable silver amalgam film electrodes are discussed in detail.

show abstract

“…The electrode can be used for several months in a stable manner 35 and preserves the properties of the mercury electrode with very small amounts of mercury being consumed (about 1 µL per 1000 measurement cycles).…”

Section: −34mentioning

confidence: 99%

Voltammetric analysis of disulfiram in pharmaceuticals with a cyclic renewable silver amalgam film electrode

Smarzewska¹,

Festinger²,

Skowron³

et al. 2017

Turk J Chem

View full text Add to dashboard Cite

Electrochemical properties of disulfiram, representative of highly significant bioactive compounds, were studied with a cyclic renewable silver amalgam film electrode (Hg(Ag)FE) using square wave cathodic stripping voltammetry (SWCSV). The influence of various factors such as pH, buffer concentration, buffer composition, and SWCSV parameters on current response was investigated. The optimum results in terms of signal shape and intensity were recorded in Britton-Robinson buffer (pH 7.5) at -0.5 V versus Ag/AgCl/3 mol L −1 KCl. An elaborated electroanalytical procedure was used to determine disulfiram at the Hg(Ag)FE in the concentration range from 0.05 to 5.00 µ M. Precision, repeatability, and accuracy of the method as well as the influence of possible interferences were ascertained. The detection and quantification limits were 11 nM and 37 nM, respectively. The applicability of the developed method was tested in the determination of disulfiram in the commercial formulation Anticol. Thin-layer chromatography with image processing software was used to validate the accuracy of the method.

show abstract

The Silver Amalgam Film Electrode in Adsorptive Stripping Voltammetric Determination of Palladium(II) as Its Dimethyldioxime Complex

Cited by 43 publications

References 24 publications

Voltammetric behavior of erythromycin ethylsuccinate at a renewable silver-amalgam film electrode and its determination in urine and in a pharmaceutical preparation

Voltammetric behavior of erythromycin ethylsuccinate at a renewable silver-amalgam film electrode and its determination in urine and in a pharmaceutical preparation

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

Voltammetric analysis of disulfiram in pharmaceuticals with a cyclic renewable silver amalgam film electrode

Contact Info

Product

Resources

About