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A colorimetric fluorescent probe for rapid and specific detection of nitrite
Author(s) -
Xu Zujun,
Shi Wenxiu,
Yang Chengjun,
Xu Jing,
Liu Huapeng,
Xu Jing,
Zhu Baocun
Publication year - 2020
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3727
Subject(s) - detection limit , fluorescence , nitrite , chemistry , linear range , fluorescence spectroscopy , analytical chemistry (journal) , selectivity , linear relationship , chromatography , optics , biochemistry , organic chemistry , physics , nitrate , catalysis , statistics , mathematics
The method of fluorescent probes has been an important technique for detection of nitrite (NO 2 − ). As an important inorganic salt, excessive nitrite would threaten humans and the environment. In this paper, a colorimetric fluorescent probe P‐N (1,2‐diaminoanthraquinone) with rapid response and high selectivity, which could detect NO 2 − by visual colour changes and fluorescence spectroscopy is presented. The probe P‐N solution (pH 1) changed from pink to colourless with the addition of NO 2 − and fluorescence intensity at 639 nm clearly decreased. Good linear exists between fluorescence intensities and NO 2 − concentrations for the range 0–16 μM, and the detection limit was 54 nM (based on a 3σ/slope). Moreover, probe P‐N could also detect NO 2 − in real water samples, and results were all satisfactory. Probe P‐N shows great practical application value for detecting NO 2 − in the environment.