酒精的光学特性及浓度检测  

The Optical Characteristics of Alcohol and Alcoholicity Detection

作　　者：冯军勤[1] 周誉昌[1] 刘桂雄[2] 吴庭万[3] 

机构地区：[1]广东工业大学实验中心,广州市广州大学城510090 [2]华南理工大学机械工程学院,广州市510640 [3]华南理工大学物理学院,广州市510640

出　　处：《光谱实验室》2006年第2期253-257,共5页Chinese Journal of Spectroscopy Laboratory

摘　　要：通过对酒精透射光谱和吸收光谱的研究发现,其特征吸收峰随浓度不同发生漂移,从分子结构能级角度对其做了定性解释;根据部分稳定的特征吸收峰处不同波长点的吸光度,利用最小二乘法建立了多元线性回归模型,运用此模型实现了根据特征吸收峰波长的位置、强度、形状来预测酒精浓度,测定数据与样品浓度之间在一定范围呈良好的线性关系。The transmission spectrum and the absorption spectrum of alcohol shows that the characteristic absorption peak shifts with alcoholicity due to the molecular configuration. A multiple regression model was established based on the position,the intensity and the shape of the characteristic absorption peak, and used to detect alcoholicity. The predictive results show a linear relationship between predicted values and real values in some range,and can be used as a means to detect the alcoholicity.

关 键 词：酒精 光学特性 峰值漂移. 

分 类 号：O657.33[理学—分析化学]