连续小波变换用于滴定终点的确定

DETERMINATION OF POTENTIOMETRIC TITRATION END-POINT BY USING CONTINUOUS WAVELET TRANSFORM

针对基于二进小波变换奇异性检测方法的不足 ,提出基于连续小波变换奇异性检测方法 ,该方法具有较细致的局部奇异性刻画能力 ,能够对滴定曲线的滴定终点进行精确的定位。将这种方法应用于NaOH对HCl和H3 PO4滴定曲线滴定终点的确定 ,取得了理想的结果。

According to the shortcoming of binary wavelet transform, a new singularity detection method with the CWT (Continuous Wavelet Transform) was presented. The method had better ability for quantitative description of singularity. The method was apllied to determine the titration end-point of the titration curves of NaOH-HCl and NaOH-H 3PO 4 with the pleased results.