论文部分内容阅读
基于正丙醇在硼酸镝材料表面有强烈的发光现象,设计了以硼酸镝为传感材料检测正丙醇的传感器。该传感器在波长为535 nm、温度为150℃、载气流速为200 m L/min时,测定正丙醇质量浓度工作曲线的线性范围为40~1800 mg/m~3(R=0.9955),检出限为15 mg/m~3。选择了13种干扰气体(丙酮、二甲苯、正己烷、三氯化碳、丙醛、乙醛、四氯化碳、苯、异丙醇、二氯化碳、甲醇、乙醇、正丁醇)进行选择性测试,除二氯化碳、乙醇、正丁醇分别有4%,9%,5%左右的干扰外,其他气体并无干扰。连续通入45 h 300 mg/m~3的正丙醇,发光强度无明显变化,传感器具有良好的使用寿命。
Based on the strong luminescence of n-propanol on the surface of dysprosium borate material, a sensor for detecting n-propanol with dysprosium borate as sensing material was designed. The linear range of this calibration curve for n-propanol concentration is 40 ~ 1800 mg / m ~ 3 (R = 0.9955) at 535 nm, 150 ℃ and carrier gas flow of 200 m L / The detection limit is 15 mg / m ~ 3. Thirteen interference gases (acetone, xylene, n-hexane, carbon trichloride, propionaldehyde, acetaldehyde, carbon tetrachloride, benzene, isopropanol, carbon dioxide, methanol, ethanol, n-butanol) Selective testing, in addition to carbon dioxide, ethanol, n-butanol were 4%, 9%, 5% of the interference, the other gas does not interfere. Continuous access to 45 h 300 mg / m ~ 3 n-propanol, no significant changes in luminous intensity, the sensor has a good life.