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A wireless hybrid chemical sensor for detection of environmental volatile organic compounds

机译:检测环境的挥发性有机化合物的无线混合化学传感器

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摘要

A hybrid sensor for monitoring volatile organic compounds (VOCs) in air is developed. The device combines two orthogonal sensing principles, selective molecular binding with a microfabricated quartz tuning fork detector and separation of analytes with a column. The tuning fork detector is functionalized with molecular imprinted polymers for selective binding to benzene, toluene, ethylbenzene, and xylenes (BTEX), and the separation column provides further discrimination of the analytes for real world complex sample analysis. The device is wireless, portable, battery-powered, and cell-phone operated, and it allows reliable detection in parts per billion (ppb) by volume-levels of BTEX in the presence of complex interferents. The hybrid device is suitable for occupational, environmental health, and epidemiological applications.
机译:开发了一种用于监测空气中挥发性有机化合物(VOC)的混合传感器。该设备结合了两种正交传感原理,利用微细加工的石英音叉检测器进行选择性分子结合以及使用色谱柱分离分析物。音叉检测器通过分子印迹聚合物功能化,可选择性结合至苯,甲苯,乙苯和二甲苯(BTEX),并且分离柱可进一步区分分析物,以进行实际的复杂样品分析。该设备是无线,便携式,电池供电和手机操作的,并且在存在复杂干扰物的情况下,可以通过BTEX的体积水平可靠地检测出十亿分之几(ppb)的浓度。混合设备适用于职业,环境健康和流行病学应用。

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