文献类型：期刊文献

英文题名：A Rapid and Sensitive Acetone Gas Sensor Utilizing Thermal Desorption Coupled with Cataluminescence on Nano-Cr4TiO8

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

年份：0

卷号：468-471

期号：1

起止页码：217-20

外文期刊名：Advanced Materials Research

收录：EI(收录号：13077454)

语种：英文

外文关键词：catalysis - chemiluminescence - desorption - gas sensors - organic compounds - oxidation

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.