LPG Based Fiber Optic Sensor for Carbon Dioxide

• Type: Article in International Conference Proceedings Book
• Date: 2012

Authors

Gouveia, C (Author) Other; Balogh, K (Author) Other; Baptista, JM (Author) Other; Kovacs, B (Author) Other; Jorge, PAS (Author) FCUP

Conference proceedings International

Title: 22ND INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, PTS 1-3

22nd International Conference on Optical Fiber Sensors (OFS)

Beijing, PEOPLES R CHINA, OCT 15-19, 2012

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 3 Citations

Other information

Authenticus ID: P-002-EEG

DOI: 10.1117/12.975279

Abstract (EN): In this work a novel optical-fiber sensor for carbon dioxide measurement is presented. A polymeric sensitive layer based on the acid-base equilibrium of phenol and of its derivative 4-nitro-phenol is used for carbon dioxide determination. The sensitive material presents changes in color and in its refractive index. Colorimetric and refractometric measurements were performed. The results show the sensor is more sensitive for lower concentrations and a saturation effect occurs for higher levels. For the colorimetric response, a resolution of +/- 0.15% was estimated and a response time of 30s was measured. For the refractometric measurements, a resolution of +/- 0.50% could be estimated and a response time of 12s was measured. Reversibility and reproducibility were also demonstrated.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4