小波分析对奇异性检测用于滴定终点确定的研究  

STUDY ON THE DETERMINATION OF END-POINT IN POTENTIOMETRIC TITRATION BY WAVELET SINGULARITY DETECTION

作　　者：朱凤岗[1] 朱雪田[2] 

机构地区：[1]山东农业大学理学院,泰安271018 [2]北京邮电大学电信学院

出　　处：《理化检验（化学分册）》2003年第5期263-266,268,共5页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：在分析化学领域中,利用数学判断法确定滴定终点,随着计算机的日益普及而备受关注。此文在介绍当前普遍采用的二进小波变换奇异性检测方法的基础上,提出基于多分辨率分析和连续小波变换两种奇异性检测方法,并应用于氢氧化钠对盐酸和磷酸滴定曲线判断终点的试验中,取得了良好的效果。An introduction of the binary wavelet transform singularity detection was presented and two new singularity detection methods based on the continuous wavelet transform (CWT) and the multiresolution analysis were proposed. Manipulations of the two methods were very simple with high precision and with the right wavelet function. Its feasibility was proved in the application to determine end-points in the titration of NaOH with HCI and with phosphoric acid.

关 键 词：小波分析 奇异性检测 滴定终点 滴定分析法 化学分析 信号处理 判定 

分 类 号：O655.2[理学—分析化学] TN911.7[理学—化学]