Open AccessHighly Sensitive Ratiometric Fluorescent Paper Sensors for the Detection of Fluoride Ions
Author(s) -
Xiaoming Wu,
Hao Wang,
Shaoxiang Yang,
Hongyu Tian,
Yongguo Liu,
Baoguo Sun
Publication year - 2019
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.9b00283
Subject(s) - fluorescence , detection limit , fluoride , ion , ultraviolet , strips , ultraviolet light , chemistry , tap water , analytical chemistry (journal) , materials science , optoelectronics , optics , inorganic chemistry , physics , chromatography , environmental science , organic chemistry , environmental engineering , composite material
Two sensitive and ratiometric fluorescent probes (probe I and probe II) were developed for the detection of fluoride ions. Probe I can detect fluoride ions quantitatively within a range of 0-6 μM and a detection limit of 73 nM, while probe II has a range of 0-40 μM and a detection limit of 138 nM. The test strips from probe I are quickly able to recognize F - (5 min) inside of the F - safety level in drinking water (1.0 mg/L, ∼5 μM) under 254 nm ultraviolet light, and the test strips from probe II quickly recognize F - (12 min) in dangerously high F - levels in water (4.0 mg/L, ∼21 μM) under 254 nm ultraviolet light. This combination of fluorescent paper sensors from probe I and probe II can be used as a simple and convenient tool to determine whether water is safe to drink or dangerous.
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