1 Key Laboratory of Water Security and Water Environment Protection in Plateau Intersection (NWNU), Ministry of Education, Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China. xzhlab@hotmail.com.
2 School of Chemical Engineering, Lanzhou City University, Lanzhou, 730070, China.
3 State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou, 730000, China.
A rapid and highly selective naked-eye detection of hydrochloric acid (HCl) in an aqueous medium was established using HCl-triggered redispersion of gold nanoparticle aggregates.