便携式恶臭检测系统的线性度与稳定性分析

Analysis of linearity and stability on portable malodor detection system

为了检测环境中恶臭气体的体积分数并且有效减小气相色谱装置的体积,利用MEMS加工工艺,制造了一款芯片式色谱柱。在此基础上设计了1套用于恶臭气体分析的系统,可以有效地实现恶臭气体的分离与检测。对系统的线性度进行了研究,并以异丁烯气体为例,通过多次重复性实验,得到整个系统的线性度,其相关系数为0.998 0,误差平方和为72.95。此外,还与现有的商品化气相色谱仪进行对比,其性能优于现有仪器的标准。

In order to detect the volumetric contents of malodorous gases in the environment as well as to reduce effectively the volume of gas chromatograph device,a chip type chromatographic column is created using the MEMS processing technology. On this basis,a system for malodorous gas analysis is designed,which can effectively realize the separation and detection of malodorous gases. The linearity of this system is studied through using isobutylene as an example.Through repeated experiments,the linearity of the whole system is gained.The correlation coefficient is 0. 998 0and the sum of the squared errors（SSE） is 72. 95. In addition,it is found that this system has superior performances compared with existing commercial gas chromatographs.