應用激發表面電漿波在H2S氣體的偵測

Detection of Hydrogen Sulfide Based on Excited Surface Plasma Waves

陳子江(Tzu-Chiang Chen) ； 林瑶冷(Yao-Leng Lin) ； 蘇文寬(Wen-Kuan Su)

《光學工程》 85期 (2004/03) Pp. 76-82

https://doi.org/10.30011/OE.200403.0009

摘要

本文主要是利用銀膜在含有硫化氫氣體環境下形成硫化銀薄膜，藉由銀與硫化銀介面之激發表面電漿波特性變化，以偵測硫化氫(H2S)氣體。經由理論模擬與分析H2S氣體與KR組態之銀膜反應前後的激發表面電漿波特性之後發現，光譜之吸收峰強度與共振角位置可以快速呈現H2S氣體對銀膜之介電常數所造成的細微改變。此結果可作為設計和製作偵測毒性或腐蝕性氣體之即時監測器的參考，並可應用在些工業場所及下水道工程硫化氫氣體的早期預警。

關鍵字

KR組態 ； 表面電漿波 ； 化學感測器 ； 硫化氫氣體

並列摘要

The detection of hydrogen sulfide based on surface plasmon resonance (SPR) reflectivity is discussed. The silver film will be sulfated quickly in the environment containing hydrogen sulfide gas and change into silver sulfide film. Through the theoretical simulation and analysis, the characteristics of the Kretschmann configuration surface plasmon resonance spectra before and after the silver film reacting with H2S gas are studied. The intensity of the absorption peak and the position of the resonance angle varied with the change of dielectric constant of the surface silver film, indicating that effects of the H2S gas on the silver film can be readily measured. The results can be used as a reference for designing the toxic or erosive gases instant monitoring devices that can be applied in the industry field and the construction of the sewer.

並列關鍵字

K-R configuration ； Surface Plasma wave ； Chemical sensor ； Hydrogen Sulfide