Determination of Dimethyl Ether in Air by Cataluminescence-Based Gas Sensor

Abstract:

A rapid and sensitive cataluminescence-based gas sensor utilizing nanosized Y₂MnO₅ as the sensing materials for determining dimethyl ether in air was proposed. The luminescence characteristics and the optimal conditions were investigated in detail. The gas sensor showed high selectivity for dimethyl ether at 620 nm and satisfying activity at 210°C under the optimized conditions. The linear range of cataluminescence intensity versus concentration of dimethyl ether was 5~120 mg/m³, and the detection limit (3σ) was 3 mg/m³. No or weak interference was observed while the foreign substances, such as formaldehyde, ammonia, ethanol, benzene, carbon monoxide and sulfur dioxide, were passing through the sensor under selected conditions. The gas sensor displayed good stability for continuously introducing dimethyl ether over 100 h, and allowed real-time monitoring of dimethyl ether in air.

• Periodical: Advanced Materials Research (Volume 739)
• Pages: 537-542
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.739.537
• Online since: August 2013
• Authors: Chun Xiu Gu, Zheng Xing, Xin Cai, Jie Zhang, Bin Juan Gao, Kao Wen Zhou
• Keywords: Cataluminescence, Dimethyl Ether, Gas Sensor, Nanosized Materials

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