期刊
MICROCHIMICA ACTA
卷 189, 期 1, 页码 -出版社
SPRINGER WIEN
DOI: 10.1007/s00604-021-05126-z
关键词
Polyoxometalates; Microsensor; Fluorescence; Artemisinin; Nanozyme; Capillary
资金
- Jilin Provincial Department of Education and Jilin Provincial Key Laboratory of Micro-Nano Functional Materials (Northeast Normal University)
A novel capillary-based fluorescence microsensor with functional polyoxometalates (POMs) as nanozyme has been developed for the determination of artemisinin. The sensor showed a wide linear range and low limit of detection, and has been successfully applied to detect artemisinin in human plasma and antimalarial drugs with satisfactory accuracy.
A novel capillary-based fluorescence microsensor for artemisinin was developed with functional polyoxometalates (POMs) as nanozyme by a layer-by-layer self-assembly strategy. Vanadomolybdophosphoric heteropoly acid (H5PMo10V2O40, PMoV2) and tungstophosphoric heteropoly acid (Na5PW11O39Cu, PW11Cu) with high peroxidase-like activity were synthesized and immobilized on capillary to catalyze artemisinin/thiamine reaction and generate the amplified fluorescence signal. The wide linear range up to 13.0 mu M with the low limit of detection of 0.03 mu M (S/N = 3) was achieved for the determination of artemisinin by using the proposed POMs-microsensor. The method has been successfully used to detect artemisinin in human plasma and antimalarial drugs with satisfactory accuracy. This work developed a novel capillary fluorescence microsensor with functional POMs as nanozyme, which can serve as a promising candidate in fluorescence microanalysis.
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