基于碳点和银纳米粒子的高选择性荧光化学探针测定汞。
Measurement of mercury with highly selective fluorescent chemoprobe by carbon dots and silver nanoparticles.
机构信息
State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing, 102249, China; Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan, 453007, China.
出版信息
Chemosphere. 2021 Jul;274:129959. doi: 10.1016/j.chemosphere.2021.129959. Epub 2021 Feb 15.
This work describes a novel fluorescent chemoprobe that uses carbon dots and silver nanoparticles (AgNPs) to monitor mercury ions in aqueous samples attributed to the principle of inner filter effect. The fluorescent response signal of the carbon dots is diminished by AgNPs, attributed to inner filter effect, and is restored with the addition of Hg. The fluorescent chemoprobe was specific over the range from 0.01 to 2.5 μM and a high sensitivity of 3.6 nM. The chemoprobe was validated using real local aqueous samples, and the spike recoveries of 97.4%-103% were excellent and satisfied. The data indicated that the developed fluorescent chemoprobe was sensitive, selective, stable and reliable. This fluorescent chemoprobe provides a sensitive tool with broad prospects for mercury detection in aqueous samples and the work will offer ideas for designing and constructing novel fluorescent probes.
本工作描述了一种新型荧光化学探针，它使用碳点和银纳米粒子 (AgNPs) 来监测水溶液样品中的汞离子，这归因于内滤效应原理。碳点的荧光响应信号因 AgNPs 的内滤效应而减弱，并随着 Hg 的加入而恢复。该荧光化学探针在 0.01 至 2.5 μM 的范围内具有特异性，且灵敏度高达 3.6 nM。该化学探针通过实际的本地水样进行了验证，其加标回收率为 97.4%-103%，效果极佳且令人满意。数据表明，所开发的荧光化学探针具有灵敏度高、选择性好、稳定性和可靠性强等特点。这种荧光化学探针为水样中汞的检测提供了一种灵敏的工具，具有广阔的应用前景，这项工作将为设计和构建新型荧光探针提供思路。
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