基于谷胱甘肽碳量子点的亚硝酸根检测方法和硫化氢检测方法
By utilizing the redox reaction of glutathione carbon quantum dots and Fe2+/Fe3+, and taking advantage of the synergistic effect of electrostatic adsorption and internal filtration, a fluorescent probe was designed. This probe solves the problems of insufficient selectivity and sensitivity in the detection of nitrite and hydrogen sulfide in the existing technology, and achieves detection effects with a wide linear range, low detection limit and short response time.
CN119985413BActive Publication Date: 2026-07-17WUHAN TEXTILE UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN TEXTILE UNIV
- Filing Date
- 2025-01-07
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing fluorescent probes have insufficient selectivity and sensitivity when detecting nitrite and hydrogen sulfide, resulting in a narrow linear range, high detection limit, and long response time.
Method used
By utilizing the negative charge properties of glutathione carbon quantum dots and the redox reactions of Fe2+ and Fe3+, a fluorescent probe was designed for detection through the synergistic effect of electrostatic adsorption and internal filtration.
Benefits of technology
It achieves highly selective and sensitive detection with a wide linear range, low detection limit, and short response time, making it suitable for the detection of nitrite and hydrogen sulfide in food and the environment.
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Abstract
本申请提供了一种基于谷胱甘肽碳量子点的亚硝酸根检测方法和硫化氢检测方法，属于荧光探针检测技术领域，包括在CDs / Fe2+体系下对NO2‑的检测和在CDs / Fe3+体系下对H2S的检测。其中，NO2‑的检测方法为：建立荧光强度标准曲线方程A，向CDs / Fe2+体系中加入NO2‑，以将Fe2+氧化为Fe3+，利用静电吸引作用使带正电的Fe3+吸附在带负电的CDs表面，通过静态淬灭和内滤效应的协同作用将CDs的荧光淬灭，然后测试荧光强度，并代入至荧光强度标准曲线方程A中，计算得到NO2‑浓度。H2S的检测方法为：建立荧光强度标准曲线方程B，向CDs / Fe3+体系中加入H2S，以将Fe3+还原为Fe2+，使CDs的荧光恢复，然后测试荧光强度，并代入至荧光强度标准曲线方程B中。本申请提供的检测方法的线性范围宽、检测限低且响应时间短。
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