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Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
Controlled-Current Coulometry: Coulometric Titration01:18

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Coulometric titrations are a form of titrimetric analysis where the reagent is generated electrically, and its amount is evaluated based on current and generating time. The electron serves as the standard reagent. The procedure is similar to conventional titrations, such as endpoint detection.
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High-Performance Liquid Chromatography: Types of Detectors01:15

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The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte properties and...

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Related Experiment Video

Updated: May 18, 2026

Measurement of Bioelectric Current with a Vibrating Probe
07:28

Measurement of Bioelectric Current with a Vibrating Probe

Published on: January 4, 2011

Triple channel responsive Cu2+ probe.

Melek Pamuk Algi1, Zahide Öztaş, Fatih Algi

  • 1Laboratory of Organic Materials (LOM), Çanakkale Onsekiz Mart University, TR-17100 Çanakkale, Turkey.

Chemical Communications (Cambridge, England)
|September 12, 2012
PubMed
Summary
This summary is machine-generated.

A new probe detects copper(II) ions using colorimetric, fluorogenic, and voltammetric methods. This simple, selective, and sensitive sensor is ideal for practical applications.

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Sensor Technology

Background:

  • Accurate detection of copper(II) ions is crucial in environmental monitoring and biological systems.
  • Existing methods for copper(II) detection often lack selectivity, sensitivity, or multi-modal detection capabilities.

Purpose of the Study:

  • To develop a novel, simple, selective, and sensitive probe for copper(II) ions.
  • To demonstrate the probe's capability for multi-modal detection, including colorimetric, fluorogenic, and voltammetric responses.

Main Methods:

  • Synthesis of a novel chemical probe.
  • Spectrophotometric and spectrofluorometric analysis to evaluate colorimetric and fluorogenic responses.
  • Electrochemical techniques (voltammetry) to assess the voltammetric response.

Main Results:

  • The developed probe exhibits high selectivity and sensitivity towards Cu(II) ions.
  • A distinct triple-channel response (colorimetric, fluorogenic, and voltammetric) was observed upon binding with Cu(II).
  • The probe's performance indicates its suitability for practical applications in Cu(II) detection.

Conclusions:

  • A novel, simple, selective, and sensitive probe for Cu(II) detection has been successfully developed.
  • The probe's unique triple-channel detection capability enhances its reliability and applicability.
  • This sensor offers a promising tool for real-world applications requiring precise Cu(II) ion quantification.