小波变换用于氢氧化钠标准溶液标定探讨

在用GB601-2002方法配制NaOH标准溶液时,尝试使用MATLAB小波工具箱函数处理数据,以确定滴定终点并计算标液浓度。实验表明,将第一代、第二代小波变换用于滴定终点的检测,其所得结果与手工指示剂法结果经统计,有95%的把握认为两种方法所得结果无显著差异,小波变换法确定终点比手工指示剂法准确、快速、简便。

Wavelet Transformation for Calibration of Standard Solution NaOH

The method of preparation of NaOH solution with GB601-2002 standard was that tried to use MATLAB wavelet toolbox functions to process the data to determine the titration end point and calculate the standard of concentration.Tests showed that the first generation and second generation wavelet transformation were used for the titration end point detection,and the results obtained by the statistical results of hand-indicator method showed with 95% certainty that the results of both methods was no significant difference in the wavelet transform method to determine the end than used the manual indicator method.This method was accurate,fast and easy.