1. Upconversion nanoparticles grafted molybdenum disulfide nanosheets platform for microcystin-LR sensing.
- Author
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Lv, Jiajia, Zhao, Sen, Wu, Shijia, and Wang, Zhouping
- Subjects
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MOLYBDENUM disulfide , *FLUORESCENCE , *MICROCYSTINS , *NANOPARTICLES analysis , *CYANOBACTERIA biotechnology , *MATHEMATICAL models - Abstract
Water safety is one of the most pervasive problems afflicting people throughout the world. Microcystin-LR (MC-LR), a representative toxin released by cyanobacteria, poses an increasing and serious threat to water safety. In order to develop facile, specific and sensitive detection methods for MC-LR, we fabricated an ultrasensitive fluorescence aptasensor using the enhanced fluorescence of UCNP and the effective quenching ability, high affinity toward single strand DNA (ssDNA) of MoS 2 (termed as FAUM). This assay specifically determined MC-LR in the linear range of 0.01–50 ng/ml with a limit of detection (LOD) of 0.002 ng/ml. The real water sample results indicated that this FAUM assay owns well enough reliability and feasibility to allow the determination of MC-LR. This aptamer-based method might be a promising strategy for a variety of sensing applications. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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