杯[4]芳烃涂层的TSM声波吡啶传感器的研究

Studies on Thickness shear mode Acoustic Wave Pyridine Sensor Coated with Calix 4 arenes

吡啶是一种大气有毒污染物，可引起中枢神经系统抑郁症，刺激皮肤和呼吸系统，损害肝、肾，使胃肠功能失调等，工作场所允许最大浓度为１５ｍｇ／ｍ３［１］．目前吡啶测定方法常有ｐＨ滴定法、比色法、气相色谱法、紫外光谱法、流动注射分析法、库仑滴定法和微分阳极溶出...

The frequency shift response characteristics for pyridine vapour by thickness shear mode (TSM) acoustic wave sensors coated with three synthesized calix 4 arenes have been reported. It is shown that C undecylcalix 4 resorcinarene(CUCRA) is the most efficient host guest adsorptive material for sensing pyridine molecule. The CUCRA based TSM sensor possesses good reproducibility, high stability and short response time with a good linear determination range of 0 040￣8 000 mg/L and a low detection limit down to 0 008 mg/L of pyridine vapour while coating with 38 μg of CUCRA. The sensitivity is (54 63±2 35) Hz/(mg\5L -1 )( n =5, 25℃). There are some interference from alcohols, amines, carboxylic acid, heterocyclic and aromatic compounds. Compared with gas chromatographic method, the sensor can be used for the determination of pyridine vapour with recovery rate of 98.10%-103 92%.