钯卟啉室温燐光氧传感器的研究  

Oxygen Sensor Based on Palladium-Porphyrin Room-Temperature Phosphorescence Quenching

作　　者：端允[1] 常海洲[2] 李改茹[1] 晋卫军[1] 

机构地区：[1]山西大学化学化工学院,太原030006 [2]山西晋中师范高等专科学校,晋中040001

出　　处：《分析化学》2003年第9期1069-1072,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金 (No .2 9875 0 16);山西省自然科学基金资助项目 (No .0 110 0 2 )

摘　　要：以Dowex 5 0× 2 1 0 0树脂为载体固定四 (三甲氨基苯基 )钯卟啉 (Pd TAPP) ,利用其光被氧猝灭的特性 ,采用流动注射分析 (FIA)技术 ,制成氧传感器。该方法响应快 (响应时间从氮气到氧气为 1 8s,反之为86s) ,灵敏度高 (I0 I1 0 0 值为 5 .6) ,检测限可达 0 .0 9% (V V)。The dye palladium-meso-tetra (trimethylaminophenyl) porphyrin (Pd-TAPP) was covalently bound to Dowex50.x2-100 resin by the electrostatic interaction. The phosphorescence of the resulted material is extremely quenched by oxygen and the resulted material can be used as a useful probe for the measurement of oxygen in gas mixture. The photochemical properties and the analytical performance of the room-temperature phosphorescence (RTP) probe were studied by using a gas flow-injection,analysis (gFIA) system, which incorporated a convenient exponential dilution chamber for gas sample introduction. It showed that the sensor had merits of rapid response (typical response times were 18 s from N-2 to O-2 stream and 86 s from O-2 to N-2 stream for 95% signals change) high precision (2.7parts per thousand at 0.6% O-2 (V/V) level) and low detection limit (0.09 % O-2 (V/V)).

关 键 词：钯卟啉 室温 燐光 氧传感器 氧分析 流动注射 光学传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]