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。
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.
出处
《传感技术学报》
CAS
CSCD
北大核心
2008年第1期1-4,共4页
Chinese Journal of Sensors and Actuators
基金
国家杰出青年基金资助(60425101)
国家自然科学基金资助(60736005)
