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Microdialysis of Ethanol During Operant Ethanol Self-administration and Ethanol Determination by Gas Chromatography
Published on: September 5, 2012
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A hydrogel optical fibre sensor for rapid on-site ethanol determination
Simin Hong1, Mingming Yan1, Yuan Feng1
1College of Optical and Electronic Technology, China Jiliang University, Hangzhou, China. chenhf@cjlu.edu.cn.
Analytical Methods : Advancing Methods and Applications
|January 15, 2024
Summary
A new fiber optic sensor enables rapid, low-cost detection of ethanol concentration. This device uses a hydrogel and fluorescent indicator for accurate measurements, ideal for on-site applications.
Area of Science:
- Chemical Sensing
- Materials Science
- Optical Instrumentation
Background:
- Ethanol is crucial in industry, food, and medicine, necessitating accurate concentration detection.
- Existing ethanol detection methods may lack speed, cost-effectiveness, or on-site applicability.
Purpose of the Study:
- To develop a novel fiber optic sensor for rapid and sensitive ethanol detection.
- To utilize hydrogel swelling and fluorescence modulation for quantitative ethanol analysis.
Main Methods:
- Fabrication of a sensing head using multimode fiber and photo-cured polyethylene glycol diacrylate (PEGDA) hydrogel.
- Immobilization of rhodamine 6G (R6G) as a fluorescent indicator within the hydrogel.
- Monitoring changes in R6G fluorescence intensity correlated with hydrogel swelling in water-ethanol mixtures.
Main Results:
- The sensor demonstrated a detection limit (LOD) of 0.4 vol% for ethanol within the 0-62.2 vol% range.
- The sensor's response is based on hydrogel swelling and its effect on R6G fluorescence intensity.
- The proposed method offers advantages including single-ended operation, low LOD, cost-effectiveness, and ease of preparation.
Conclusions:
- The developed fiber optic sensor provides a promising tool for rapid and on-site ethanol detection.
- The sensor leverages hydrogel-based fluorescence modulation for accurate ethanol concentration determination.
- This technology has significant potential for various industrial and research applications requiring ethanol monitoring.
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