Selenite was selectively and sensitively detected based on the room-temperature phosphorescence quenching of Mn–ZnS QDs caused by HSe− from the reaction of selenite and glutathione.
Fe2+ was selectively detected based on the phosphorescence quenching of MPA–Mn : ZnS QDs caused by hydroxyl radicals from the Fenton reaction.
The mechanism of the phosphorescence quenching process of Mn-doped ZnS QDs by DPP.