文献类型：会议论文

英文题名：A rapid and sensitive acetone gas sensor utilizing thermal desorption coupled with cataluminescence on nano-Cr4TiO8

作者：Zhou, Kaowen[1]; Li, Xin[1]; Su, Di[1]; Yang, Huizhu[1]; Shen, Xu[1]

第一作者：周考文

通讯作者：Zhou, K.

机构：[1] Biochemical Engineering College, Beijing Union University, Beijing 100023, China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]Biochemical Engineering College, Beijing Union University, Beijing 100023, China|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

会议论文集：Automation Equipment and Systems

会议日期：March 27, 2012 - March 29, 2012

会议地点：Xiamen, China

语种：英文

外文关键词：Chemical sensors - Titanium compounds - Gas detectors - Nanotechnology - Chromium compounds - Desorption

摘要：A rapid and sensitive cataluminescence (CTL)-based gas sensor using nanosized Cr4TiO8 as a probe was proposed for direct determination of acetone in air. Trace acetone was firstly absorbed on active carbon at room temperature to concentrate, then desorbed at 84°C to determine. The sensor showed high selectivity to acetone at wavelength of 430nm, satisfying activity at temperature of 366°C and good stability at carrier flow rate of 115 ml/min. The linear range of CTL intensity versus concentration of acetone was 2.5～150 mg/m3, and the detection limit (3σ) was 1.2 mg/m3. The recovery of artificial sample was 94.1%-106.2% by this method. The response to formaldehyde and ethanol was insignificant, and there was no response to SO2, CO and benzene. ? (2012) Trans Tech Publications.