A highly sensitive and selective cyanide detection using a gold nanoparticle-based dual fluorescence-colorimetric sensor with a wide concentration range

- A dual-functional detection system using AuNP-based assay was developed.
- The cyanide sensing system is simple and does not need complex organic synthesis.
- The system has a wide detectable range over three orders of magnitudes for cyanide.
- The system offers an excellent selectivity to monitor cyanide in real water samples.