Related Experiment Video
Updated: May 30, 2026

ELIME (Enzyme Linked Immuno Magnetic Electrochemical) Method for Mycotoxin Detection
Published on: October 23, 2009
Diagnostic assay of trace lead in an ex vivo tissue using a combination electrode
Suw Young Ly1, Hai-Soo Yoo, Nam Jeong Kim
1Biosensor Research Institute, Seoul National University of Technology, 172, gongreung 2 dong Nowon gu, Seoul 139-743, South Korea. suwyoung@snut.ac.kr
Abstract:
A voltametric diagnosis of trace lead was performed using macro type combination sensors of fluorine-doped graphite pencil electrodes (FPE). Two pencils were used as the reference and auxiliary instead of expensive Ag/AgCl standards and Pt counters. Under optimized conditions, a square wave (SW) stripping working curve was attained at 10-70 mg/L and a micro range of 10-70 μg/L. The developed sensor was not only inexpensive but also had a fast (90-s) accumulation time. An analytical detection limit of 10 μg/L was obtained. The results were applied to an ex vivo tissue and an artificial turf.
More Related Videos
Related Concept Videos
Electrodeposition
Electrodeposition can...
Electrodes: Overview
There are two main types of electrodes in electrochemical cells. The first type, known as the working or indicator electrode, has a potential that is sensitive to the analyte's concentration and reacts to changes in the...
Electrogravimetric Analysis: Overview
To test the completeness of the...
Effects of EDTA on End-Point Detection Methods
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...
Controlled-Potential Coulometry: Electrolytic Methods
The chosen potential ensures...
EDTA: Direct, Back-, and Displacement Titration
Direct titration involves buffering the metal ion solution to the desired pH and directly titrating with standard EDTA until the endpoint. The optimum pH ensures a large conditional formation constant of metal−EDTA and visibility of the free indicator color in the solution. In addition, auxiliary complexing reagents are used to prevent the precipitation of metal hydroxides and...

