Related Experiment Video
Updated: Jun 26, 2026
12:11
ELIME (Enzyme Linked Immuno Magnetic Electrochemical) Method for Mycotoxin Detection
Published on: October 23, 2009
Electrochemical biosensor technology: application to pesticide detection
Ilaria Palchetti1, Serena Laschi, Marco Mascini
1Dipartimento di Chimica, Università degli Studi di Firenze, Sesto Fiorentino, Italy.
Methods in Molecular Biology (Clifton, N.J.)
|January 23, 2009
Summary
Electrochemical biosensors offer rapid, reliable detection of environmental pollutants. A key method uses acetylcholinesterase (AChE) inhibition to identify pesticides like organophosphorus and carbamates.
Area of Science:
- Analytical Chemistry
- Environmental Science
Background:
- Electrochemical sensors and biosensors are increasingly vital in analytical chemistry for rapid, reliable measurements.
- Environmental monitoring demands fast, cost-effective analytical tools due to rising pollutant levels.
- Biosensors offer a promising alternative or complementary approach for analyzing environmental parameters.
Purpose of the Study:
- To review fundamental concepts of electrochemical biosensors.
- To present a detailed protocol for detecting environmental organic pollutants using electrochemical biosensors.
Main Methods:
- Focus on enzyme inhibition-based detection.
- Detailed description of a method utilizing acetylcholinesterase (AChE) inhibition.
- Application for detecting organophosphorus and carbamate pesticides.
Main Results:
- Demonstration of a viable electrochemical biosensor protocol for environmental analysis.
- Effective detection of specific pesticide classes through enzyme inhibition.
Conclusions:
- Electrochemical biosensors are versatile tools for environmental monitoring.
- The AChE inhibition method provides a specific and efficient means for pesticide detection.
Related Concept Videos
01:17Microbial Biosensors
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...
01:15Potentiometry: Membrane Electrodes
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
01:15High-Performance Liquid Chromatography: Types of Detectors
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...
01:28Microbial Bioremediation of Pesticides
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...