一种基于碲化镉和氟化镁量子点的定制比率荧光传感器用于痕量N-乙基戊酮的检测。
A tailored ratiometric fluorescent sensor based on CdTe and MgF quantum dots for trace N-ethylpentylone detection.
作者信息
Ling Jiang, Liao Yingyuan, Xiang Ping, Li Jiahao, Zhang Wenqi, Ding Yanjun
机构信息
Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, 410013, Hunan, China.
Hunan Xiangya Judicial Appraisal Center, Central South University, Changsha, 410013, Hunan, China.
出版信息
Mikrochim Acta. 2024 Jun 3;191(7):363. doi: 10.1007/s00604-024-06424-y.
The development of low-cost and highly sensitive ratiometric fluorescence sensor, CdTe@MIPs/MgF, for N-Ethylpentylone (NEP) detection in wastewater samples is described. In this system, CdTe@MIPs (λex = 370, λem = 570) are employed as the receptor and response unit for NEP, with MgF (λex = 370, λem = 470) as the reference signal to enhance stability. Under optimal conditions, the sensor shows fluorescent quenching response at 570 nm to NEP in linear range of 2-200 nM, with LOD of 0.6 nM. The sensor also demonstrates significant selectivity for NEP over other analogues and interferents, making it ideal for practical applications in wastewater analysis. This approach is potentially more cost-effective and sensitive than conventional mass spectrometry in detecting abused substances in sewage. Additionally, the MgF fluorescent nano-material was first-ever developed and investigated, which may be significant in future research.
本文描述了一种用于检测废水样品中N-乙基戊酮（NEP）的低成本、高灵敏度比率荧光传感器CdTe@MIPs/MgF的研制。在该体系中，CdTe@MIPs（激发波长λex = 370，发射波长λem = 570）用作NEP的受体和响应单元，MgF（激发波长λex = 370，发射波长λem = 470）作为参考信号以增强稳定性。在最佳条件下，该传感器对NEP在570 nm处呈现荧光猝灭响应，线性范围为2 - 200 nM，检测限为0.6 nM。该传感器对NEP相对于其他类似物和干扰物也表现出显著的选择性，使其非常适合废水分析的实际应用。这种方法在检测污水中滥用物质方面可能比传统质谱更具成本效益和灵敏度。此外，首次开发并研究了MgF荧光纳米材料，这在未来的研究中可能具有重要意义。
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