Results 21 to 30 of about 560 (248)

Determination of Trace Amounts of Thallium by Adsorptive Cathodic Stripping Voltammetry with Xylenol Orange

open access: yesAnalytical Sciences, 2002
Trace amounts of thallium(I) can be determined using adsorptive cathodic stripping voltammetry in the presence of Xylenol Orange (XO). The reduction current of the thallium(I)-XO complex ion was measured by square-wave cathodic stripping voltammetry. The peak potential was at -0.44 V vs. Ag/AgCl.
SHAMS, Esmaeil, YEKEHTAZ, Mehdi
openaire   +3 more sources

Fe-binding organic ligands in coastal and frontal regions of the western Antarctic Peninsula [PDF]

open access: yesBiogeosciences, 2021
Organic ligands are a key factor determining the availability of dissolved iron (DFe) in the high-nutrient low-chlorophyll (HNLC) areas of the Southern Ocean. In this study, organic speciation of Fe is investigated along a natural gradient of the western
I. Ardiningsih   +9 more
doaj   +1 more source

Nanostructured Bismuth Film Electrode for Detection of Progesterone

open access: yesSensors, 2018
Progesterone is an important hormone responsible, among others, for maintaining pregnancy via inhibition of uterus muscles activity; thus, following its concentration levels in pregnant women is of immense importance in the endeavor to prevent premature ...
Tanja Zidarič   +2 more
doaj   +1 more source

Adsorptive Cathodic Stripping Voltammetric Determination of Cefoperazone in Bulk Powder, Pharmaceutical Dosage Forms, and Human Urine

open access: yesJournal of Analytical Methods in Chemistry, 2013
The electroreduction behaviour and determination of cefoperazone using a hanging mercury drop electrode were investigated. Cyclic voltammograms of cefoperazone recorded in universal Britton-Robinson buffers pH 3–6 exhibited a single irreversible cathodic
Vu Dang Hoang   +2 more
doaj   +1 more source

Cathodic adsorptive stripping voltammetry of an anti-emetic agent Granisetron in pharmaceutical formulation and biological matrix

open access: yesJournal of Pharmaceutical Analysis, 2012
Granisetron showed one well-defined reduction peak at Hanging Mercury Drop Electrode (HMDE) in the potential range from −1.3 to −1.5 V due to reduction of C=N bond.
Rajeev Jain, Ramkishor Sharma
doaj   +1 more source

Adsorptive Stripping Voltammetric Determination of Cobalt (II) on the Carbon Paste Electrode

open access: yesInternational Journal of Electrochemical Science, 2011
Traces of cobalt (II) can be determined by adsorptive stripping voltammetry using Nitroso-S as complex forming reagent. First in acetate buffer pH 5.0, cobalt (II)-Nitroso-S complex was adsorbed on the carbon paste electrode with an accumulation ...
Alireza Mohadesi   +3 more
doaj   +1 more source

Polarographic and Voltammetric Determination of meso-Tetrakis(4-sulfonatophenyl)porphyrin Tetrasodium Salt at Mercury Electrodes

open access: yesInternational Journal of Electrochemical Science, 2007
The electrochemical behavior of meso-tetrakis(4-sulfonatophenyl) porphyrin tetrasodium salt (TPPS4) was investigated in aqueous media of BR buffer in pH range 2-12.
Adela Rumlerova-Lipsová, Jiri Barek, Pavel Drasar, Karel Zelenka and Karolina Peckova
doaj   +2 more sources

Quantification of Sub-Nanomolar Levels of Gallic Acid by Adsorptive Stripping Voltammetry

open access: yesInternational Journal of Electrochemical Science, 2011
The voltammetric behavior of gallic acid (GA) on a hanging mercury drop electrode (HMDE) has been investigated by cathodic adsorptive stripping voltammetry (AdCSV).
S. Abbasi   +3 more
doaj   +1 more source

A Magnetic Nanocomposite Modifier for Improved Ultrasensitive Detection of Hexavalent Chromium in Water Samples

open access: yesChemosensors, 2021
In this work, different electrodes were employed for the determination of Cr(VI) by the cathodic square-wave voltammetry (SWV) technique and the square-wave adsorptive stripping voltammetry (SWAdSV) technique in combination with ...
Nuša Hojnik   +2 more
doaj   +1 more source

Selective Preconcentration of Ultra Trace Copper (II) ion Using Square Wave Cathodic Adsorptive Stripping Voltammetry at Modified Carbon Past Electrode

open access: yesInternational Journal of Electrochemical Science, 2020
Ultra-trace copper determination in natural water and human hair samples was performed using stripping voltammetric based on Square wave cathodic adsorptive.
Awad A. Al-rashdi   +2 more
doaj   +1 more source

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