Fig. 1
From: Label-free upconversion nanosensor for water safety monitoring of permanganate and dichromate ions
Schematics of the UCNPs@SiO2 based UCL sensor for MnO4− and Cr2O72−detection
Fig. 1 | BMC Chemistry
From: Label-free upconversion nanosensor for water safety monitoring of permanganate and dichromate ions
Schematics of the UCNPs@SiO2 based UCL sensor for MnO4− and Cr2O72−detection