Optical device for the measurement of chlorocarbon vapors

Ashutosh Sharma; Oliver William Carter

doi:10.1117/12.276158

30 May 1997 Optical device for the measurement of chlorocarbon vapors

Ashutosh Sharma, Oliver William Carter

Proceedings Volume 3105, Chemical, Biochemical and Environmental Fiber Sensors IX; (1997) https://doi.org/10.1117/12.276158
Event: Environmental Sensing III, 1997, Munich, Germany

Abstract

An optical device for monitoring of volatile aliphatic chlorocarbons based on the measurement of fluorescence quenching of an indicator molecule that forms part of the sensing element is reported. Chlorocarbon vapors present in air mixture or in the water when in contact with the fluorescent indicator immobilized in a polymer film cause a quantitative decrease in the fluorescence intensity. The sensor offers response time of ca. 100 s, and recovery times, governed by diffusion of the analyte in the polymer film, are less than 100 s for measurement in air. A higher response time was observed for carbon tetrachloride saturated water. Detection limits less than ppm were obtained.

Citation Download Citation

Ashutosh Sharma and Oliver William Carter "Optical device for the measurement of chlorocarbon vapors", Proc. SPIE 3105, Chemical, Biochemical and Environmental Fiber Sensors IX, (30 May 1997); https://doi.org/10.1117/12.276158

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