Ultrasensitive visual detection of Hg<sup>2+</sup> ions <i>via</i> the Tyndall effect of gold nanoparticles
Zihao Deng, Wenying Jin, Qiaobo Yin, Jinkun Huang, Ziheng Huang, Haiyan Fu, Yali Yuan, Jianmei Zou, Jinfang Nie, Yun Zhang
Abstract
where the Tyndall effect of gold nanoparticles (GNPs) acts as a light scattering signalling readout. Its utility is demonstrated with ultrasensitive detection of the target with a limit down to 0.13 nM (∼5461-fold sensitivity improvement over conventional GNP-based methods with surface plasmon resonance signalling).
Topics & Concepts
IonColloidal goldNanoparticleChemistryAnalytical Chemistry (journal)NanotechnologyMaterials scienceChromatographyOrganic chemistryMolecular Sensors and Ion DetectionAdvanced biosensing and bioanalysis techniquesGold and Silver Nanoparticles Synthesis and Applications