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Related Concept Videos

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
Electrodeposition01:08

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...
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Voltammetry: Stripping Methods01:13

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...
Electrogravimetric Analysis: Overview01:30

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...
Preparation of Samples for Electron Microscopy01:20

Preparation of Samples for Electron Microscopy

To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...

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Updated: May 11, 2026

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
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Published on: August 7, 2016

Electrochemically prepared solid-phase microextraction coatings--a review.

Mohammad Ovais Aziz-Zanjani1, Ali Mehdinia

  • 1Department of Chemistry, Faculty of Science, KN Toosi University of Technology, Tehran, Iran.

Analytica Chimica Acta
|May 21, 2013
PubMed
Summary

Electrochemical methods offer reproducible and controllable coatings for solid-phase microextraction (SPME). This review covers recent advancements in electrochemically prepared SPME coatings and their analytical uses.

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Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Electrochemical preparation of coatings for solid-phase microextraction (SPME) has gained significant traction.
  • These coatings offer advantages like biocompatibility, thermal stability, and porous structures.

Purpose of the Study:

  • To review recent developments in electrochemically prepared SPME coatings.
  • To highlight their diverse analytical applications.

Main Methods:

  • Classification of coatings: electropolymerized conductive polymers (CPs), electrodeposited metal oxides, electrophoretically deposited carbon nanotubes (CNTs), and anodized metals.
  • Focus on electrochemical preparation techniques.

Main Results:

  • Electrochemical methods yield easily controlled and reproducible SPME coatings.
  • Diverse materials including CPs, metal oxides, CNTs, and anodized metals are suitable for SPME.

Conclusions:

  • Electrochemical preparation is a versatile approach for developing advanced SPME coatings.
  • These coatings show great promise for various analytical applications.