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Updated: Sep 2, 2026

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
Published on: December 17, 2018
Recent Advances (2019-2025) in Mercury Ion Detection
Yujin Yang1, Huijuan Qi1, Xiangting Hou1
1School of Chemistry and Chemical Engineering, Linyi University, Linyi, China.
Abstract:
As a persistent bioaccumulative toxin, mercury ion (Hg2+) presents grave environmental and public health risks due to their extreme toxicity and neurological damage potential. The advancement of reliable Hg2+ detection methodologies become imperative for safeguarding ecological security and food supply chains. In recent years, different signal output modes have been explored for Hg2+ detection. This review systematically summarizes the latest detection techniques and strategies for Hg2+ based on electrochemical signal, fluorescence signal, SERS signal and colorimetric signal. Innovation designs of functional materials, small molecules, nanoprobes and strategies for Hg2+ detection have been introduced and their detection performances including sensitivity, selectivity and portability are compared with each other. The comparison results show that some methods can achieve ultrasensitive detection of Hg2+ at fM level. In addition, the challenges and perspective for Hg2+ detection have been discussed. The review is expected to provide insights for the development of highly sensitive and portable detection tools for Hg2+, and promote the transformation of Hg2+ detection technology from the laboratory to industrialization.
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