一种荧光 / 比色传感器及其用于Co2+检测的方法和应用
The fluorescence/colorimetric dual-mode detection method based on a combination of hydroxytyrosol (HYT), H2O2, and resorcinol (NR) solves the problems of complexity and high cost of existing Co2+ detection methods, and achieves highly sensitive Co2+ detection, especially in the application of actual water samples.
CN120668626BActive Publication Date: 2026-07-17QINGDAO UNIV OF SCI & TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QINGDAO UNIV OF SCI & TECH
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing Co2+ detection methods are complex to operate, costly, and lack sufficient sensitivity, making it difficult to achieve efficient detection in actual water samples.
Method used
A combination of hydroxytyrosol (HYT), H2O2, pH buffer, and resorcinol (NR) is used to initiate polymerization by reacting Co2+ with H2O2 to generate Co3+ and ·OH, producing dimers and oligomers, which inhibits the formation of fluorescent chromophores and enables dual-mode detection of fluorescence and colorimetry.
Benefits of technology
This paper presents a simple, low-cost, and highly sensitive method for detecting Co2+ with a detection limit of 0.323 nM. It can accurately detect Co2+ in actual water samples and has good selectivity and anti-interference ability.
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Figure CN120668626B_ABST
Abstract
本发明公开了一种荧光 / 比色传感器及其用于Co2+检测的方法和应用。检测方法基于双氧水氧化Co2+生成Co3+和·OH，Co3+氧化HYT生成邻醌类物质，导致Co2+再生，进一步·OH氧化HYT和邻醌类物质，引发聚合反应，生成二聚体和低聚物，二聚体和低聚物不能与NR发生原位荧光显色反应，抑制了荧光发色团的生成。整个实验过程不涉及昂贵的试剂和复杂繁琐的步骤。实验结果表明，该方法具有较高的选择性。在最佳实验条件下，Co2+检出限为0.323nM，比以往报道的基于荧光 / 比色法的检测限更低。更重要的是，该方法能够检测实际水样中的Co2+。此外，该方法拓宽了HYT和NR作为前体小分子的检测应用范围。
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