压电晶体传感器阵列用于小分子脂肪醇的识别

Discriminating Aliphatic Alcohol with Small Molecule by Array of Piezoelectric Crystal Sensors

将多个表面涂有不同选择性吸附材料的压电晶体传感器组成阵列 ,用于小分子脂肪醇同系物及同分异构体的识别。阵列对甲醇、乙醇、 2 -丙醇、 1 -丁醇蒸气的响应频移值采用主成分分析法降维投影 ,在二维空间同种醇聚为一类 。

An array,which consists of several piezoelectric crystal sensors,each coated with different absorptive and selective material,is presented to recognize aliphatic alcohol homologue and isomer of small molecular size.The frequency shift data obtained from the array as the response to the vapor of methanol,ethanol,2 propanol and 1 butanol are analyzed by using a principal component analysis method.The two dimension display of the original and auto stalled data shows well defined clusters for identical alcohol.