基于主成分F模型的棉糖含量色度定量检测方法研究

The Chromatic Quantitative Testing Method of Cotton Sugar Content Based on Principal Component Model F

为了解决色度定量法(CQTM)中单一色度参数与标准糖溶液的线性拟合波动性大的问题,发挥色度仪多指标综合评价的优势,在初步掌握各色度参数与3,5-二羟基甲苯-硫酸标准显色溶液关系模型的基础上,首先通过主成分分析法对具有较强相关性的色度参数因子降维,然后建立主成分F模型与标准含糖量的关系模型。通过棉花含糖量的实测检验,证实了这种定量检测方法的可行性,并且具有F模型的色度参数可选择、线性拟合波动性可控制、空白溶液参比可省略等优点。

In order to solve the problem of poor linear fitting fluctuation between the single chromatic parameter and standard sugar solution with chromatic quantitative testing method (CQTM) and to take the advantages of comprehensive evaluation of multi index colorimeter,based on the relationship between the chromatic parameters and the 3,5- two hydroxyl toluene-sulfuric acid,the principal component analysis method was used to reduce the dimension of chromatic parameters,and the relationship between the principal component model F and the standard sugar content was established.By measuring test of the cotton sugar content,the feasibility of this method was proved.And it was considered that this model F has advantages of the selectable chromatic parameters,controllable linear fitting fluctuation and omissible blank solution.