This study demonstrates a new sensor utilizing gold nanoparticles and surface plasmon resonance for detecting mercury ions, indicating strong sensitivity.
A highly sensitive and selective silver (Ag)-coated HF SPR sensor based on 4-mercaptopyridine-functionalized AuNPs (AuNPs/4-MPY), as a signal amplification label, was developed for Hg 2+ ion detection.
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Xu et al. (2025) studied this question.
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