Portable device for acetone detection based on cataluminescence sensor utilizing wireless communication technique

Publication date: March 2018
Source:Sensors and Actuators B: Chemical, Volume 257
Author(s): Guolong Shi, Yigang He, Qiwu Luo, Bing Li, Chaolong Zhang
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 2s) and recovery time (within 3s). The sensor instrument covered a linear test range from 5ppm to 2500ppm, while the sensor showed non-linearity when concentration ranged from 2500ppm to 8000ppm. 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.



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