A Novel QCM-based Biosensor for Detection of Microorganisms Producing Hydrogen Sulfide
A Novel QCM-based Biosensor for Detection of Microorganisms Producing Hydrogen Sulfide
复制标题
一种基于 QCM 的新型生物传感器，用于检测产生硫化氢的微生物
DOI：
10.1080/00032710802238028
复制
发表时间：
2008-01-01
影响因子：
2
通讯作者：
Ren, Jiali
中科院分区：
文献类型：
--
作者：
He, Fengjiao;Cui, Xiaoying;Ren, Jiali
提出了一种新型的气体渗透膜压电石英晶体微天平（QCM）装置，用于检测产生硫化氢（H2S）的微生物。其检测原理是基于硫化氢在压电晶体传感器的银电极上的吸附，引起QCM谐振频率的急剧下降。选择100Hz频移作为判断是否存在产生H2S的微生物的标准值。考察了影响检测的因素。干燥剂在传感器响应中具有重要的实际意义。这种新型的生物传感器可能是一种潜在的候选人检测细菌产生硫化氢。
A novel piezoelectric quartz crystal microbalance (QCM) device with gas permeable membrane is proposed for the detection of microorganisms producing hydrogen sulfide (H2S). The detection theory is based on the adsorption of hydrogen sulfide onto the silver electrode of the piezoelectric crystal sensor, which causes a dramatic decrease in the resonant frequency of QCM. A 100Hz frequency shift is chosen as the criteria value to judge the presence of microorganisms producing H2S. Factors affecting detection were investigated. Desiccant is of great practical importance in sensor response. This new biosensor can be a potential candidate for detecting bacteria which produce hydrogen sulfide.