Journal
TALANTA
Volume 201, Issue -, Pages 143-148Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2019.04.001
Keywords
Carbon dots; Tetracycline determination; Fluorescence; One-pot microwave synthesis
Categories
Funding
- Universidad Nacional del Sur [PGI 24/Q084, PGI 24/Q086]
- ANPCyT [PICT-201-0659]
- CONICET
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The current study proposes a fast one-pot microwave assisted synthesis of new carbon dots (CDs) based on glycerol and urea. The novel carbon nanoparticles (GUCDs) have been appropriately characterized and exhibited good luminescent properties with a quantum yield of about 9.8%. Interestingly, the GUCDs are able to selectively interact with tetracycline class antibiotics, which produce a decrease in the native fluorescence of the CDs. On the base of these features, a new analytical method has been developed for the determination of tetracycline. The proposed method has shown satisfactory analytical parameters, such as good linearity range -between 0.5 and 25 mu M (R-2 = 0.999(7))- and an acceptable detection limit (165 nM). Moreover, the new method has been successfully applied for tetracycline determination in urine samples with good recoveries (94.7-103%) and precision (4.6 RSD%).
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