Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7141371 | Sensors and Actuators B: Chemical | 2018 | 9 Pages |
Abstract
Portable sensor system was constructed for detection of acetone vapor based on the cataluminescence (CTL) theory. Excellent microspheres were prepared successfully which increased the contact probability with vapors. The instrument architecture, optimal experiment conditions and measurement characteristics were discussed in detail. The results showed the CTL sensor instrument exhibited excellent CTL properties including visible intensity, high signal/noise (S/N) values, short response time (within 2Â s) and recovery time (within 3Â s). The sensor instrument covered a linear test range from 5Â ppm to 2500Â ppm, while the sensor showed non-linearity when concentration ranged from 2500Â ppm to 8000Â ppm. Furthermore, the sensor system showed outstanding selectivity to acetone compared with other ten kinds of common vapors. Moreover, the CTL sensor also showed an excellent response for H2S, the CTL performance of H2S under different wavelength and temperature was also discussed. The excellent sensing and online detecting properties proved this sensor instrument to be an excellent candidate for real-time gas contaminant detection. Finally, the sensing control processes and monitoring software interface was also presented.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Guolong Shi, Yigang He, Qiwu Luo, Bing Li, Chaolong Zhang,