These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.
Pubmed for Handhelds
PUBMED FOR HANDHELDS
Search MEDLINE/PubMed
Title: A Mn-doped ZnS quantum dots-based ratiometric fluorescence probe for lead ion detection and "off-on" strategy for methyl parathion detection. Author: Zhang F, Liu Y, Ma P, Tao S, Sun Y, Wang X, Song D. Journal: Talanta; 2019 Nov 01; 204():13-19. PubMed ID: 31357274. Abstract: In the present study, a novel ratiometric fluorescence probe based on dual-emitting Mn-doped ZnS quantum dots (Mn:ZnS QDs) was established for detection of Pb2+ and methyl parathion (MP). The dual-emitting Mn:ZnS QDs was aqueous synthesised in one pot and played as a ratiometric fluorescence probe for the detection of Pb2+ with high sensitivity. The fluorescence intensity ratio (F450nm/F585nm) of the probe against the concentration of Pb2+ showed a good linear relationship from 10 nM to 60 nM with a detection limit of 0.5 nM. Furthermore, the Mn:ZnS QDs/Pb2+ system was established as a turn-on fluorescence sensing system to quantitative measure the MP concentration. The fluorescence intensity at 450 nm exhibited a good linear relationship in the MP concentration range from 0.19 to 0.95 μM with a detection limit of about 0.02 μM. It also had a satisfying performance in fruit and environmental water samples. Therefore, the prepared Mn:ZnS QDs-based sensor has been established as a ratiometric fluorescence probe and turn-on method for quantitative detection of lead ion and MP, respectively.[Abstract] [Full Text] [Related] [New Search]