Title : TPB-DMTP@S-CDs\/MnO(2) Fluorescence Composite on a Dual-Emission-Capture Sensor Module for Fingerprint Recognition of Organophosphorus Pesticides - Yuan_2023_Anal.Chem__ |
Author(s) : Yuan L , Tian X , Fan Y , Sun Z , Zheng K , Zou X , Zhang W |
Ref : Analytical Chemistry , : , 2023 |
Abstract :
Residues of organophosphorus pesticides (OPs) raise considerable concern, while identifying OPs from unknown sources is still a challenge to onsite fluorescence techniques. Herein, a dual-emission-capture sensor module, based on a TPB-DMTP@S-CDs/MnO(2) fluorescence composite, is developed for OP fingerprint recognition. TPB-DMTP@S-CDs/MnO(2), synthesized by a hydrothermal method and self-assembly, is spectrographically validated as a dual-wavelength fluorescence source. OP-sensitive catalysis (acetylcholinesterase on acetylthiocholine chloride) is designed to regulate fluorescence by decomposing quenchable MnO(2). A flexibly fabricated sensor module supports the optimal dual-wavelength fluorescence excitations and captures and converts fluorescence emissions into equivalent photocurrents for feasible access. The most prominent finding is that dual-fluorescence emissions alternatively respond to levels, species, and multi-pH pretreatments of OPs due to varied MnO(2) sizes and distributions. Therefore, OP fingerprint recognition is conducted by refining the multidimensional information from fluorescence-triggered photocurrents and preset hydrolyzation using principal component analysis and the rule of maximum covariance. The recommended method provides a wide dynamic range (1 x 10(-6) - 12 microg mL(-1)), a good limit of detection (7.9 x 10(-7) microg mL(-1)), 15-day stability, and good selectivity to guarantee fingerprint recognition. For laboratory and natural samples, this method credibly identifies a single kind of OPs from multiple species at trace levels (10(-5) microg mL(-1)) and performs well in two-component and multicomponent analyses. |
PubMedSearch : Yuan_2023_Anal.Chem__ |
PubMedID: 36689633 |
Yuan L, Tian X, Fan Y, Sun Z, Zheng K, Zou X, Zhang W (2023)
TPB-DMTP@S-CDs\/MnO(2) Fluorescence Composite on a Dual-Emission-Capture Sensor Module for Fingerprint Recognition of Organophosphorus Pesticides
Analytical Chemistry
:
Yuan L, Tian X, Fan Y, Sun Z, Zheng K, Zou X, Zhang W (2023)
Analytical Chemistry
: