文献类型：期刊文献

英文题名：Simultaneous determination of benzene and formaldehyde in air by cross cataluminescence on nano-3TiO2-2BiVO4

作者：Zhou, Kaowen[1]; Cheng, Yanling[1]; Yang, Hongwei[1]; Gu, Chunxiu[1]; Xiao, Yu[1]; Zhao, Minghang[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;

年份：2014

卷号：202

起止页码：721-726

外文期刊名：Sensors and Actuators, B: Chemical

收录：EI(收录号：20142717886753);Scopus(收录号：2-s2.0-84903136667)

语种：英文

外文关键词：Titanium dioxide - Carbon dioxide - Sulfur dioxide - Benzene

摘要：A novel method based on cross cataluminescence (CTL) generated on the surface of nano-3TiO2-2BiVO4 was proposed for simultaneous determination of benzene and formaldehyde in air. Two analysis wavelengths 470 nm and 600 nm were selected for this method. The surface temperature of sensing materials was 375 °C. The flow rate of air carrier was 135 mL/min. The limits of detection of this method were 0.12 mg/m3 for benzene and 0.05 mg/m3 for formaldehyde. The linear ranges of CTL intensity versus analyte concentration were 0.25-57.5 mg/m3 for benzene and 0.10-51.3 mg/m3 for formaldehyde. The recoveries of 5 testing standard samples by this method were 96.6-103.1% for benzene and 97.2%-102.8% for formaldehyde. Common coexistence matters, such as toluene, ethyl benzene, acetaldehyde, ethanol, ammonia, sulfur dioxide and carbon dioxide, did not disturb the determination. The relative deviation (RD) of CTL signals from continuous 120 h detection of gaseous mixture containing benzene and formaldehyde was less than 2%, which demonstrated the longevity and steady performance of nano-3TiO2-2BiVO4 to benzene and formaldehyde. ? 2014 Elsevier B.V.