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An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

Published on: December 17, 2018

Immunoassay for cadmium detection and quantification.

Gong-Liang Liu¹, Ju-Fang Wang, Zhi-Yong Li

¹School of Biosciences & Bioengineering, South China University of Technology, Guangzhou 510006, Guangdong, China.

Biomedical and Environmental Sciences : BES

|September 4, 2009

Summary

A new indirect competitive enzyme-linked immunosorbent assay (IC-ELISA) effectively detects cadmium in environmental and food samples. This method offers reliable quantification with high accuracy and precision, comparable to traditional spectroscopy techniques.

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Area of Science:

Environmental Science
Food Safety
Analytical Chemistry
Biotechnology

Background:

Cadmium is a toxic heavy metal posing risks to environmental and food safety.
Accurate detection of cadmium residues is crucial for regulatory compliance and public health.
Traditional methods like GFAAS and ICP-AES are effective but can be resource-intensive.

Purpose of the Study:

To develop and evaluate an indirect competitive enzyme-linked immunosorbent assay (IC-ELISA) for cadmium detection.
To compare the performance of IC-ELISA with established spectroscopic methods (GFAAS, ICP-AES).
To assess the suitability of IC-ELISA for analyzing cadmium in diverse environmental and food matrices.

Main Methods:

Development of an indirect competitive enzyme-linked immunosorbent assay (IC-ELISA) utilizing a cadmium-specific monoclonal antibody.

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An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium

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Quantification of Metal Leaching in Immobilized Metal Affinity Chromatography

Quantification of Metal Leaching in Immobilized Metal Affinity Chromatography

Published on: January 17, 2020

Evaluation of the IC-ELISA method for detecting cadmium in environmental and food samples.

Comparison of IC-ELISA results with those obtained from graphite furnace atomic absorption spectroscopy (GFAAS) and inductively coupled plasma atomic emission spectroscopy (ICPAES).

Main Results:

The developed IC-ELISA demonstrated a low detection limit of 1.95 microg/L and an IC50 of 45.6 microg/L for cadmium.
Mean recovery rates for cadmium ranged from 97.67% to 107.08%, indicating high accuracy.
Excellent correlation (coefficient of 0.998) was observed between IC-ELISA and GFAAS, highlighting method concordance.

Conclusions:

The developed IC-ELISA is a sensitive and reliable method for detecting and quantifying cadmium residues.
IC-ELISA offers a viable alternative for cadmium analysis in environmental and food samples.
This assay provides a practical tool for routine monitoring and risk assessment of cadmium contamination.