文献类型：会议论文

英文题名：A Novel BTEX Gas Sensor Utilizing Cataluminescence on Nanosized Bi4MnO8

作者：Kaowen Zhou[1]; Chunxiu Gu[1]; Ziqiao Zhang[1]; Lijing Xing[1]; Xin Li[1]; Chunxue Fu[1]

第一作者：周考文

机构：[1] Biochem. Eng. Coll., Beijing Union Univ., Beijing, China

第一机构：北京联合大学生物化学工程学院

会议日期：5-7 Aug. 2011

会议地点：Zhangjiajie, Hunan, China

语种：英文

外文关键词：bismuth compounds - chemiluminescence - gas sensors - nanosensors - organic compounds

摘要：A novel method based on cataluminescence (CTL) generated on the surface of nanosized Bi4MnO8 was proposed for direct determination of BTEX (benzene, toluene, ethyl benzene, xylenes) in air. The method showed high selectivity for BTEX at wavelength of 620 nm, satisfying activity at reaction temperature of 355°C and good stabiLity at air carrier flow rate of 125 ml/min. The Linear range of CTL intensity versus concentration of BTEX was 0.2~50 mg/m3 (γ=0.9992). Relative standard deviations (R.S.D., n=12) was 1.15 for 3 mg/m3 BTEX, and the detection Limit (3σ) was 0.08 mg/m3. Common coexistence matters, such as carbon monoxide, sulfur dioxide, formaldehyde, ammonia, ethanol, methanol, and so on, did not disturb the determination of BTEX. The recovery of testing BTEX in artificial air samples was 95.4%-104.8%. This method allowed rapid determination of BTEX in air, and showed potential advantages owing to its high selectivity, long Life and real-time procedure for environmental analysis.