Development of an Inexpensive RGB Color Sensor for the Detection of Hydrogen Cyanide Gas,ACS Sensors

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Development of an Inexpensive RGB Color Sensor for the Detection of Hydrogen Cyanide Gas
ACS Sensors ( IF 8.2 ) Pub Date : 2017-10-12 00:00:00 , DOI: 10.1021/acssensors.7b00396
Lee A. Greenawald ₁ , Gerry R. Boss ₂ , Jay L. Snyder , Aaron Reeder ₃ , Suzanne Bell ₄

Affiliation

An inexpensive red, green, blue (RGB) color sensor was developed for detecting low ppm concentrations of hydrogen cyanide gas. A piece of glass fiber filter paper containing monocyanocobinamide [CN(H₂O)Cbi] was placed directly above the RGB color sensor and an on chip LED. Light reflected from the paper was monitored for RGB color change upon exposure to hydrogen cyanide at concentrations of 1.0–10.0 ppm as a function of 25%, 50%, and 85% relative humidity. A rapid color change occurred within 10 s of exposure to 5.0 ppm hydrogen cyanide gas (near the NIOSH recommended exposure limit). A more rapid color change occurred at higher humidity, suggesting a more effective reaction between hydrogen cyanide and CN(H₂O)Cbi. The sensor could provide the first real time respirator end-of-service-life alert for hydrogen cyanide gas.

中文翻译：

用于检测氰化氢气体的廉价RGB颜色传感器的开发

开发了一种廉价的红色，绿色，蓝色（RGB）颜色传感器，用于检测低ppm浓度的氰化氢气体。将一块含有单氰基氰胺[CN（H ₂ O）Cbi]的玻璃纤维滤纸直接放在RGB颜色传感器和芯片上LED上方。纸张反射的光在浓度为1.0-10.0 ppm（相对湿度为25％，50％和85％）的情况下暴露于氰化氢中时，可以监测RGB颜色的变化。在暴露于5.0 ppm氰化氢气体后10 s内，颜色发生了快速变化（接近NIOSH建议的暴露极限）。在较高的湿度下颜色变化更快，表明氰化氢与CN（H ₂O）Cbi。该传感器可以为氰化氢气体提供第一个实时呼吸器使用寿命终止警报。

更新日期：2017-10-13

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