基于近红外光谱技术的保水剂吸水倍率快速测定新方法  

A New Method for Rapid Determination of Water Absorbency of the SAP Based on Near Infrared Spectroscopy

作　　者：岳征文[1] 张瑞强[1] 阎立功 刘铁军[1] 高天明[1] 刘召[1] 

机构地区：[1]水利部牧区水利科学研究所,内蒙古呼和浩特010020

出　　处：《安徽农业科学》2013年第28期11477-11479,11562,共4页Journal of Anhui Agricultural Sciences

基　　金：中国水科院科研专项项目(MK2013J03);国家自然科学基金项目(40901136)

摘　　要：[目的]基于近红外光谱技术,研究保水剂吸水倍率的快速测定新方法。[方法]通过近红外光谱技术结合偏最小二乘法,对9种聚丙烯酰胺型保水剂的吸水倍率进行研究。[结果]保水剂样品光谱数据采用一阶导数法预处理后,应用PLS法建模预测效果最佳。真值与预测值的决定系数达99.55%,模型预测准确率都在96%以上,可应用于生产实践。[结论]应用近红外光谱技术结合PLS法可以准确预测出保水剂的吸水倍率,是一种快速、无损、环保的新方法。[ Objective ] The research aimed to study a new method for rapid determination of water absorbency of the SAP based on near infra- red spectroscopy. [ Method] By combining near infrared spectroscopy with partial least squares （PLS）, water absorbencies of the nine kinds of polyacrylamide-type SAPs were studied. [ Result ] After the pretreatment of spectral data of the SAP sample by using first-order derivative method, the prediction effect of modeling by PLS was the best. Determination coefficient between true and predicted values reached 99.55% , and accurate rate of the model prediction was over 96% , which could be applied to the production practice. [ Conclusion] By combining near infrared spectroscopy with PLS, water absorbency of the SAP could be predicted accurately. It was a kind of rapid, lossless and environmental new method.

关 键 词：近红外光谱技术 偏最小二乘法 保水剂 吸水倍率 

分 类 号：S181.3[农业科学—农业基础科学]