中文摘要：

设计了一种基于纳米材料SrCO3中掺杂Dy2O3的催化发光（CTL）丙酮蒸气传感器。通过掺杂Dy2O3使体系选择性显著提高。当Dy2O3的掺杂量为33%时,催化发光强度是不掺杂的3倍。当各测试气体浓度均为2000mL/m^3时,三氯甲烷、二氯乙烷、甲醛和苯气体不干扰丙酮的测定。乙醇和正丁烷只引起15%和2.1%的干扰。在温度383℃、波长425nm、空气流速为360mL/min的最佳条件下,催化发光强度与丙酮蒸气浓度在1.0～5000mL/m^3内呈良好的线性关系,检出限为0.30mL/m^3。本传感器响应和恢复时间快速。

英文摘要：

A new cataluminescence-based（CTL） gas-sensor using nanosized SrCO3 doped with Dy2O3 catalyst was designed for the detection of acetone vapor.The selectivity was greatly elevated and three times of CTL intensity was obtained with the doping of 33% Dy2O3.When the concentration of tested gases was 2000 mL/m3,chloroform,ethylene dichloride,formaldehyde and benzene did not interfere with the determination of acetone.Ethanol and n-hexane caused interference at around 15% and 2.1% respectively.The linear range of CTL intensity versus concentrations of acetone vapor was 1.0-5000 mL/m^3,with detection limits（3σ） of 0.30 mL/m^3 at an optimal temperature of 383 ℃,a wavelength of 425 nm and a flow rate of 360 mL/min.The sensor has the advantages of fast response and recovery time.