Journal
ANALYTICAL CHEMISTRY
Volume 86, Issue 19, Pages 9381-9385Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac503214v
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Funding
- National Basic Research Program of China [2011CB933700]
- Overseas, Hong Kong & Macao Scholars Collaborated Researching Fund [21228702]
- National Natural Science Foundation of China [21302187, 21205120]
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The development of convenient methods for sulfur dioxide and its derivatives analysis is critically important because SO2 causes worldwide serious environmental problems and human diseases. In this work, we show an unprecedented example of an energy-transfer-based fluorescence nanoprobe for selective and quantitative detection of SO2, through molecular engineering of the fluorescent carbon nanodots by a cyanine dye which have a unique reactivity to bisulfite, achieving a detection limit of 1.8 mu M with a linear relationship (R-2 = 0.9987). The specific detection was not interfered with other potential coexisted species. In addition, the probe is demonstrated for the determination of SO2 gas in aqueous solution as well as for visually monitoring of SO2 gas in air. This nanomaterial based probe is easily prepared, fast responding, and thus potentially attractive for extensive application for the determination of SO2 and other similar air pollutants.
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