毛细管电泳激光诱导荧光检测信号的小波滤噪  

Eliminating Noise of LIF Detection Signal for Capillary Electrophoresis by Wavelet Transform

作　　者：刘中华[1] 周平[1] 

机构地区：[1]武汉大学化学与分子学院,武汉430072

出　　处：《分析科学学报》2003年第5期404-406,共3页Journal of Analytical Science

摘　　要：采用小波滤噪方法对毛细管电泳激光诱导荧光检测信号进行了处理,研究了小波变换中小波基的选择及噪声阈值的选择对滤噪的影响。结果表明,采用DB4小波基能有效消除毛细管电泳激光诱导荧光检测信号中存在的噪声,使信噪比得到较大改善。A new wavelet de- noising method used in the process of LIF detection for capillary electrophoresis was reported. Confirmation of de- noising cutoff and choice of wavelet function were investigated. The experimental result showed that this DB wavelet could be used to pick up real signal and de- noise effectively, and signal to noise ratio was greatly improved.

关 键 词：毛细管电泳 激光诱导荧光检测 信号处理 小波变换 滤噪 

分 类 号：O657.8[理学—分析化学]