用探地雷达询问声表面波无源无线传感器探测地下H2S
Sub-surface H2S detection by a Surface Acoustic Wave passive wireless sensor interrogated with a ground penetrating radar
摘要:
长期监测土壤中的有机污染物是一项重大的环境挑战。我们建议,以满足这个问题的发展,一种聚合物,专门选择性地与硫化氢反应,涂层声表面波传感器设计为被动合作目标的化合物,并探测他们的反应,使用探地雷达,从而提供了能力,以监测地下环境中的硫化氢的存在。通过在网状聚合物基质中包括铅(II)阳离子来带来选择性,所述网状聚合物基质可以作为薄层沉积在表面声波传感器上。我们展示了一种信号增强机制,其中吸水放大信号检测,使传感器最敏感的H2S在地下环境中饱和的水分。
英文摘要:
Long-term monitoring of organic pollutants in the soil is a major environmental challenge. We propose to meet this issue by the development of a polymer dedicated to selectively react with H2S, coating surface acoustic wave transducers designed as passive cooperative targets with the compound, and probing their response using Ground Penetrating RADAR, thus providing the capability to monitor the presence of H2S in the subsurface environment. The selectivity is brought by including lead(II) cation in a reticulated polymer matrix which can be deposited as a thin layer on a surface acoustic wave sensor. We demonstrate a signal enhancement mechanism in which water absorption magnifies the signal detection, making the sensor most sensitive to H2S in an underground environment saturated with moisture.
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