Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Electrodeposition

Electrodeposition

Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...

Precipitation and Co-precipitation

Precipitation and Co-precipitation

Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...

Controlled-Potential Coulometry: Electrolytic Methods

Controlled-Potential Coulometry: Electrolytic Methods

Controlled-potential coulometry, also known as potentiostatic coulometry, employs a three-electrode system in which the working electrode's potential is precisely regulated using a potentiostat. Platinum working electrodes are utilized for positive potentials, while mercury pool electrodes are favored for extremely negative potentials. The platinum counter electrode is separated from the analyte using a membrane or salt bridge to avoid interference in the analysis.
The chosen potential ensures...

Voltammetry: Stripping Methods

Voltammetry: Stripping Methods

Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...

Precipitation Titration: Endpoint Detection Methods

Precipitation Titration: Endpoint Detection Methods

In argentometric precipitation titrations, endpoints can be detected visually by the Mohr, Volhard, and Fajans methods. In the Mohr method, adding a soluble chromate indicator gives an initial yellow color to the analyte solution. As the titrant is added, the first excess of silver ions forms a red silver chromate precipitate, marking the endpoint. The solution pH should be maintained at about 8 by adding solid CaCO3.
In the Volhard method, a standard excess of AgNO3 is first added to the...

Electrogravimetric Analysis: Overview

Electrogravimetric Analysis: Overview

Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Boehmite and Gibbsite Nanoplates for the Synthesis of Advanced Alumina Products.

ACS applied nano materials·2024

Same author

Radiolysis and Radiation-Driven Dynamics of Boehmite Dissolution Observed by In Situ Liquid-Phase TEM.

Environmental science & technology·2022

Same author

<sup>27</sup> Al NMR diffusometry of Al<sub>13</sub> Keggin nanoclusters.

Magnetic resonance in chemistry : MRC·2021

Same author

Preconcentration mechanism of trivalent lanthanum on eQCM electrodes in the presence of α-hydroxy isobutyric acid.

Journal of electroanalytical chemistry (Lausanne, Switzerland)·2021

Same author

Crystallization and Phase Transformations of Aluminum (Oxy)hydroxide Polymorphs in Caustic Aqueous Solution.

Inorganic chemistry·2021

Same author

Hydroxide promotes ion pairing in the NaNO<sub>2</sub>-NaOH-H<sub>2</sub>O system.

Physical chemistry chemical physics : PCCP·2020

Search research articles

Related Experiment Video

Updated: Jun 4, 2026

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Published on: June 1, 2012

Preconcentration of f-elements from aqueous solution utilizing a modified carbon paste electrode.

Paul D Schumacher¹, Kelly A Fitzgerald, James O Schenk

¹Department of Chemistry, Washington State University, Pullman, Washington 99164, USA.

Analytical Chemistry

|January 29, 2011

Summary

This study introduces a novel carbon paste electrode modified with α-hydroxyisobutyric acid (HIBA) for the cathodic preconcentration of lanthanides. The method effectively concentrates ultratrace f-elements for sensitive detection.

More Related Videos

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

Published on: January 30, 2015

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Published on: August 4, 2023

Related Experiment Videos

Last Updated: Jun 4, 2026

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Hollow Microneedle-based Sensor for Multiplexed Transdermal Electrochemical Sensing

Published on: June 1, 2012

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

Reductive Electropolymerization of a Vinyl-containing Poly-pyridyl Complex on Glassy Carbon and Fluorine-doped Tin Oxide Electrodes

Published on: January 30, 2015

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Precise Electrochemical Sizing of Individual Electro-Inactive Particles

Published on: August 4, 2023

Area of Science:

Electrochemistry
Analytical Chemistry
Materials Science

Background:

Carbon paste electrodes are widely used in electroanalysis.
Preconcentration techniques are crucial for detecting ultratrace analytes.
Lanthanides are important f-elements with diverse applications.

Purpose of the Study:

To develop and evaluate a modified carbon paste electrode for the preconcentration of f-elements.
To investigate the electrochemical behavior of the modified electrode.
To assess the efficiency of the preconcentration and detection of lanthanides.

Main Methods:

Fabrication of paraffin oil-based Acheson 38 carbon paste electrodes modified with α-hydroxyisobutyric acid (HIBA).
Electrochemical characterization using cyclic voltammetry.
Cathodic preconcentration of lanthanides at -0.4 V vs Ag/AgCl in 0.1 M LiCl.
Oxidative stripping of accumulated elements into 2% HNO(3).
Quantification using Inductively Coupled Plasma Mass Spectrometry (ICP-MS).

Main Results:

The modified electrode exhibited a chemically reversible, non-Nerstian, single-electron transfer process for HIBA.
Lanthanides (excluding promethium) were successfully accumulated onto the electrode surface.
Quantitative removal of lanthanides was confirmed by ICP-MS.
The method achieved preconcentration of ultratrace solutions down to 5 parts per quadrillion (ppq).
A limit of detection (LOD) of approximately 1 part per trillion (ppt) for lanthanides was achieved within a 5-minute preconcentration time.

Conclusions:

The HIBA-modified carbon paste electrode is an effective tool for the cathodic preconcentration of lanthanides.
The developed method offers high sensitivity and efficiency for ultratrace f-element analysis.
This approach has potential applications in environmental monitoring and nuclear waste analysis.