费斯特共振能量转移
检出限
荧光
土霉素
能量转移
碳纤维
化学
选择性
分析化学(期刊)
光化学
材料科学
色谱法
光学
生物化学
复合数
物理
复合材料
催化作用
抗生素
分子物理学
作者
Yanzhao Fu,Li Huang,Shaojing Zhao,Xuejian Xing,Minhuan Lan,Xiangzhi Song
标识
DOI:10.1016/j.saa.2020.118947
摘要
A carbon dot (CD)-based fluorometric probe for oxytetracycline (OTC) detection utilizing a Förster resonance energy transfer (FRET) mechanism was firstly developed. Upon addition of OTC, the blue fluorescence of the CDs peaked at 405 nm was quickly quenched, with a new fluorescence peaked at 505 nm attributed to OTC was observed within 30 s. A visual fluorescent color change of the CDs solution from blue to green was discerned under a 365 nm UV light irradiation. The CDs displayed a high sensitivity and selectivity toward OTC with a low detection limit of 0.41 μM. Furthermore, the probe was applied to detect OTC in water, milk, and pork samples with a satisfied recovery.
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