Highly sensitive and selective sensor for detecting anionic heavy metals

摘要

A metal thin film, a self-assembled monolayer adhered on the surface of the metal thin film, and a self-assembled monolayer fixed on the self-assembled monolayer, the surface of which is modified with a cationic functional group, The present invention provides a sensor for detecting an anionic heavy metal which includes silica nanoparticles having open pores in an enlarged form and which changes in the resonance angle of the surface plasmon when it comes into contact with an anionic heavy metal. The present invention also provides a method for real-time measurement of the concentration of an anionic heavy metal with high sensitivity and high selectivity using the sensor.