Abstract
Photoluminescence enhancement provides an effective way to improve the performance of quantum dots. In this study, lead(II) determination was demonstrated based on phosphorescence enhancement using 1-thioglycerol-capped Mn-doped ZnS quantum dots. Under the optimized conditions, good linear correlations were obtained for Pb2+ from 10.00 to 5000 nM and 0.05000 to 100.0 mM with correlation coefficients of 0.9997 and 0.9979 and a detection limit of 2.56 nM. The method demonstrates good linearity and selectivity, suitable sensitivity, easy operation, and the determination of Pb2+ in Chinese herbal medicine.
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