用小波变换方法定量分析多组分溶液的吸收光谱

An Absorption spectrum Quantitative Analysis of Multi Component Solution Using Wavelet Transform

用小波变换的方法分析多组分溶液的吸收光谱， 可以测量多组分混合溶液中各组分的含量。我们只需知道待测组分的标准吸收光谱和混合溶液的吸收光谱， 而不必知道其它的组分和噪声的性质， 也不必用物理或化学的方法将待测组分从混合物中提取出来， 利用小波变换的时频特性和多尺度的性质， 在一个合适的尺度下， 可以准确地测量待测组分的浓度而抑制其它组分的影响。用同样的方法， 可以将混合物中所有已知组分的浓度计算出来。也就是说， 只要知道混合物中某一物质存在，利用紫外－ 可见光光谱分析仪，就可以将该物质的含量求出来。这种方法与传统的方法相比， 要求的条件较低， 不需物理或化学的分离， 分析速度快， 精确度也较高。

Using Absorption spectroscopic analysis to analyze Multi component solution with wavelet transform, the quantities of each component in the mixed solution can be measured. What we need to know is only the standard absorption spctrum of the component to be measured and that of the mixed solution, while we do not need to know the properties of other components and noises. Also, we do not have to extract the component to the measured by physical or chemical method. If handled properly, the concentration of the component to be measured can be obtained accurately, while the influence of other components can be suppressed. In the same way, all other components in the mixture can be calculated. That is, if it is known there exists a substance in a mixture, the quantity of the substance can be found with an ultravisible spectroscopic instrument. Compared with the traditional method this one is simpler, and it is not required to do physical or chemical separation. The speed of analysis is high, and the accuracy is quite good.