文献类型：会议论文

英文题名：A Sensitive Formaldehyde Sensor Based on Cataluminescence Coupled with Thermal Desorption

作者：Yang, Hongwei[1];Xing, Zheng[1];Zhou, Kaowen[1]

第一作者：杨宏伟

通讯作者：Yang, HW[1]

机构：[1]Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R 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：4th International Conference on Applied Mechanics, Materials and Manufacturing (ICAMMM)

会议日期：AUG 23-24, 2014

会议地点：Shenzhen, PEOPLES R CHINA

语种：英文

外文关键词：Formaldehyde; Cataluminescence; Gas sensor; Thermal desorption

摘要：A sensitive cataluminescence- based detecting technology using nanosized Mo4V6Ti10O47 as a probe was proposed for determination of formaldehyde in air. Trace formaldehyde was firstly absorbed on active carbon at room temperature to concentrate, then desorbed at 75 C to determine. The method showed high selectivity to formaldehyde at wavelength of 575nm, satisfying activity at temperature of 260 C and good stability at carrier flow rate of 145 ml/ min. The linear range of CTL intensity versus concentration of formaldehyde was 0.04 78 mg/ m 3, and the detection limit ( 3s) was 0.02 mg/ m 3. The recovery of artificial sample was 96.8%- 103.4% by this method. There was no response to CO, CO2, SO2, NH3, methanol, ethanol, benzene, toluene and xylenes.