Tetracycline is an antibiotic that has been prescribed for COVID-19 treatment, raising concerns about antibiotic resistance after long-term use. This study reported fluorescent polyvinylpyrrolidone-passivated iron oxide quantum dots (IO QDs) for detecting tetracycline in biological fluids for the first time. The as-prepared IO QDs have an average size of 2.84 nm and exist a good stability under different conditions. The IO QDs’ tetracycline detection performance could be attributed to a combination of static quenching and inner filter effect. The IO QDs displayed high sensitivity and selectivity toward tetracycline and achieved a good linear relationship with the corresponding detection limit being 91.6 nM.
Sudewi, Sri; Chabib, Lutfi; Zulfajri, Muhammad; Gedda, Gangaraju; and Huang, Genin Gary
"Polyvinylpyrrolidone-passivated fluorescent Iron oxide quantum dots for turn-off detection of tetracycline in biological fluids,"
Journal of Food and Drug Analysis: Vol. 31
, Article 12.
Available at: https://doi.org/10.38212/2224-6614.3440
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