We have prepared and characterized hydrosulfide-selective ChemFET devices based on a nitrile butadiene rubber membrane containing tetraoctylammonium nitrate as a chemical recognition element that is applied to commercially available field-effect transistors. The sensors have fast (120 s) reversible responses, selectivity over other biologically relevant thiol-containing species, detection limits of 8 mM, and a detection range from approximately 5 to 500 mM. Sensitivities are shown to be 53 mV per decade at pH 8. Use of this compact, benchtop sensor platform requires little training – only the ability to measure DC voltage, which can be accomplished with a conventional multimeter or a simple analog data acquisition device paired with a personal computer. To the best of our knowledge, this report describes the first example of direct potentiometric measurement of the hydrosulfide ion in water.

我们已经基于腈丁二烯橡胶膜（包含硝酸四辛基铵作为化学识别元素）制备并表征了硫化氢选择性ChemFET器件，并将其应用于商用场效应晶体管。传感器具有快速（120 s）可逆响应，对其他生物学相关的含硫醇物质的选择性，8 mM的检测限和大约5至500 mM的检测范围。在pH为8的情况下，灵敏度为每十年53 mV。使用这种紧凑的台式传感器平台几乎不需要培训-仅具有测量DC电压的能力，这可以通过传统的万用表或与之配对的简单模拟数据采集设备来完成。一台个人计算机。据我们所知，