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Potentiometry: Membrane Electrodes

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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...

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Updated: Dec 22, 2025

Bacterial Detection & Identification Using Electrochemical Sensors

Bacterial Detection & Identification Using Electrochemical Sensors

Published on: April 23, 2013

Electrochemical biosensors for pathogen detection.

Ellen Cesewski¹, Blake N Johnson²

¹Department of Industrial and Systems Engineering, Virginia Tech, Blacksburg, VA, 24061, USA; Department of Materials Science and Engineering, Virginia Tech, Blacksburg, VA, 24061, USA.

Biosensors & Bioelectronics

|May 5, 2020

Summary

This summary is machine-generated.

This review covers advances in electrochemical biosensors for pathogen detection, detailing transduction and biorecognition elements, techniques, and performance. Future directions include wearable, multiplexed, and low-cost biosensors for diverse applications.

Keywords:

Bio-threat Biosensors COVID-19 Electrochemical Food safety Medical diagnostics Pathogen quantification Virus detection Water safety

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Last Updated: Dec 22, 2025

Bacterial Detection & Identification Using Electrochemical Sensors

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Published on: April 23, 2013

Development of an Electrochemical DNA Biosensor to Detect a Foodborne Pathogen

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Published on: June 3, 2018

Fabrication of Electrochemical-DNA Biosensors for the Reagentless Detection of Nucleic Acids, Proteins and Small Molecules

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Published on: June 1, 2011

Area of Science:

Electrochemistry
Biosensor Technology
Pathogen Detection

Background:

Electrochemical biosensors offer sensitive and rapid pathogen detection.
Advances are driven by improvements in transducer and biorecognition elements.
Current research focuses on enhancing performance and expanding applications.

Purpose of the Study:

To comprehensively review recent advancements in electrochemical biosensors for pathogen detection.
To analyze key components: transduction elements, biorecognition elements, electrochemical techniques, and performance metrics.
To highlight emerging trends and future challenges in the field.

Main Methods:

Review of literature on electrochemical biosensors for pathogen detection.
Categorization of biosensors based on transduction and biorecognition elements.
Analysis of measurement formats, applications, and future directions.

Main Results:

Detailed discussion of electrode materials, form factors, and biorecognition strategies (antibodies, aptamers, imprinted polymers).
Exploration of electrode modification, transducer integration, sample preparation, and secondary binding steps.
Highlighting applications in food/water safety, medical diagnostics, environmental monitoring, and bio-threat detection.

Conclusions:

Electrochemical biosensors are versatile tools for pathogen detection across various sectors.
Future research should focus on wearable, multiplexed, reusable, and low-cost disposable designs.
Addressing challenges in plant pathogen detection and process monitoring is crucial for broader impact.