Synchronous fluorescence detection of nitrite in meat products based on dual-emitting dye@MOF and its portable hydrogel test kit

文献类型： 外文期刊

第一作者： Deng, Siyang

作者： Deng, Siyang;Liu, Junmei;Han, Dong;Zhang, Chunhui;Yang, Xinting;Liu, Huan;Yang, Xinting;Liu, Huan;Deng, Siyang;Liu, Junmei;Blecker, Christophe

作者机构：

关键词： Luminescent metal organic framework; Dual-mode detection; On-spot visualization; NO2-; Rh6G@UIO-66-NH2

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：13.6； 五年影响因子：12.7 ）

ISSN： 0304-3894

年卷期： 2024 年 463 卷

页码：

收录情况： SCI

摘要： A novel ratiometric fluorescent nanoprobe (Rh6G@UIO-66-NH2) was fabricated for efficient nitrite (NO2-) detection in the present study. When NO2- was introduced, it interacted with the amino groups on the surface of Rh6G@UIO-66-NH2, forming diazonium salts that led to the quenching of blue fluorescence. With this strategy, a good linear relationship between NO2- concentration and the fluorescent intensity ratio of the nanoprobe in the range of 1-100 mu M was established, with a detection limit of 0.021 mu M. This dual-readout nanosensor was applied to analyze the concentration of NO2- in real meat samples, achieving satisfactory recovery rates of 94.72-104.52%, highlighting the practical potential of this method. Furthermore, a portable Gel/Rh6G@UIO-66NH2 hydrogel test kit was constructed for on-spot dual-mode detection of NO2-. This kit allows for convenient colorimetric analysis and fluorometric detection when used in conjunction with a smartphone. All the photos taken with the portable kit was converted into digital information using ImageJ software. It provides colorimetric

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