【摘要】 研究了新型敏感材料PMPS对神经性毒剂模拟剂甲基膦酸二甲酯(DMMP)的响应特性。在石英晶体微天平(QCM)的电极上滴涂上PMPS溶液得到敏感膜,发现QCM当响应、恢复时间为30-60s时,可以产生大约11.83Hz/ppm(ppmi.e.×10-6)的频率响应,理论上LOD为0.25ppm(ppmi.e.×10-6),并具有较好的重复性和选择性。该实验结果表明,与PVDF相比,PMPS是一种更适宜检测DMMP的敏感材料。更多还原

【Abstract】 A new sensitive material PMPS was investigated for the response to DMMP. The novel quartz crystal microbalance (QCM) sensors were prepared by dip-coating method using PMPS solution to get sensitive layers. It shows that QCM can provide about 11.83 Hz/ppm(ppm i.e.×10-6) frequency shift and 0.25 ppm(ppm i.e.×10-6) LOD in theory with reacting/dissolving time 30-60 s. The QCM sensors coated with PMPS films also present a good selective and repeating ability. This result indicates that compared with PVDF, PMPS is a preferable sensitive material for chemical warfare agent detection at room temperature.更多还原