Abstract
A thin film dissolved oxygen sensor was fabricated by trapping erythrosin B in a sol-gel matrix. No phosphorescence was observed when the sensor was immersed in water. Very weak phosphorescence was observed when erythrosin B was dissolved in aqueous ethanol and acetone solutions. However, fluorescence at 590nm, which was efficiently quenched by dissolved oxygen, was observed from the doped sol-gel sensor in water. A singlet oxygen feedback mechanism was proposed. Good sensitivity and stability were observed for this detector.
Original language | English |
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Pages (from-to) | 101-108 |
Number of pages | 8 |
Journal | Analytica Chimica Acta |
Volume | 487 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jul 2003 |
Externally published | Yes |
Keywords
- Dissolved oxygen
- Erythrosin B
- Fluorescence
- Sensor
- Sol-gel