Colorimetric and ratiometric fluorescent detection of sulfite in water via cationic surfactant-promoted addition of sulfite to α,β-unsaturated ketone
| Autor: | Hongyan Bai, Weibing Zhang, Junhong Qian, Qian Sun, Haiyu Tian |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Ammonium bromide
Fluorophore Ketone Inorganic chemistry Wine Biochemistry Micelle Fluorescence Analytical Chemistry Absorbance chemistry.chemical_compound Surface-Active Agents Sulfite Coumarins Dietary Sucrose Cations Environmental Chemistry Sulfites Sulfhydryl Compounds Coloring Agents Spectroscopy Micelles Fluorescent Dyes chemistry.chemical_classification Detection limit Cetrimonium Hydrogen-Ion Concentration Ketones chemistry Cetrimonium Compounds Colorimetry Mineral Waters |
| Zdroj: | Analytica chimica acta. 788 |
| ISSN: | 1873-4324 |
| Popis: | Three fluorescent probes were constructed by incorporating an α,β-unsaturated ketone to a coumarin fluorophore. The selective addition of sulfite to the alkene of TSP assisted by cetyltrimethyl ammonium bromide (CTAB) micelle can be visualized by dramatic color and ratiometric fluorescence changes. In CTAB–PBS system, the fluorescence intensity ratio at 465 nm and 592 nm (I465/I592) and the absorbance ratio at 390 nm and 470 nm (A390/A470) were linearly proportional to sulfite concentration in the range of 0.5–150 μM, and the detection limit was 0.2 μM. Good selectivity and competition of TSP1 towards sulfite over several anions and biological thiols were acquired. Probe TSP1 was used to detect sulfite in three realistic samples (mineral water, sugar and white wine) with good recovery. |
| Databáze: | OpenAIRE |
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