The use of SO and HO as novel specific masking agents for highly selective "turn-on" fluorescent switching recognition of CN and I based on Hg-graphene quantum dots.

In this study, we report that both CN and I can enhance the fluorescent intensity of Hg-graphene quantum dots (Hg-GQDs). However, the selectivity of the sensor was poor. Accordingly, simple specific masking agents can be directly used to solve this problem.