邻苯二甲酸二丁酯
荧光
海水
检出限
化学
人工海水
色谱法
肉眼
纳米颗粒
分析化学(期刊)
材料科学
核化学
纳米技术
有机化学
光学
物理
海洋学
地质学
作者
Jinjie You,Hua Liu,Qian Zhang,Qiao-Fen Pan,Aili Sun,Zeming Zhang,Xizhi Shi
标识
DOI:10.1016/j.scitotenv.2022.157675
摘要
A tricolor ratiometric fluorescence sensor was fabricated by mixing blue- and red-emission molecularly imprinted quantum dots (MIP-QDs) with green-emission quantum dots at the optimal ratio. The MIP-QDs were synthesized by coating CdSe/ZnS QDs in polymer by inverse microemulsion method. Compared with single-emission or dual-emission sensors, the tricolor ratiometric fluorescence sensor provided a wider range of color variations for visual DBP detection. The ratio fluorescence value I530/(I450 + I630) of the tricolor ratiometric fluorescence sensor linearly changed within the concentration of 2.0-20.0 × 103 μg/L DBP. The correlation coefficient was 0.9910, and the limits of detection were 1.0 μg/kg and 0.65 μg/L in fish and seawater, respectively. Meanwhile, the fluorescence color gradually changed from purple to plum to pink to salmon to yellowish green and finally to green. The recoveries of DBP in fish and seawater were 84.3 %-91.4 % and 88.3 %-110.3 %, respectively. Moreover, no obvious differences were observed between the detection results of the tricolor ratiometric fluorescence sensor and gas chromatography-tandem mass spectrometry. The tricolor ratiometric fluorescence sensor constructed herein provides an ideal choice for rapid and intuitive DBP detection in environmental and aquatic products.
科研通智能强力驱动
Strongly Powered by AbleSci AI