摘要
在波长485—640nm范围内,间隔0.5nm,测量Fe3+、Zn2+、Cu2+与2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚(简称5-Br-PADAP)显色配合物的吸光度。用连续小波变换(CWT)对测定的光谱数据进行预处理,再用支持向量回归(SVR)建模,建立了连续小波变换-支持向量回归方法(CWT-SVR)。方法用于模拟水样中Fe3+、Zn2+、Cu2+三组分的同时测定,结果满意,且明显优于SVR方法。
The spectrum of Fe^3＋, Zn^2＋, Cu^2＋ with 2-（ 5-bromo-2-Pyridylazo ）-5- diethylaminophenol as chromogenic reagent,with the wavelength of 585 640nm and interval of 0.5nm were sampled. The continuous wavelet transform （CWT） was used then to pretreat the data. A model was built by support vector regression, establishing continuous wavelet transformation-support vector regression method（CWT-SVR）. This method gave better result than SVR method when used to simultaneous determination of Fe^2＋ ,Zn^2＋, Cu^2＋ in aqueous solution.
出处
《光谱实验室》
CAS
CSCD
2008年第2期269-272,共4页
Chinese Journal of Spectroscopy Laboratory
基金
河南省科技发展计划项目(0624420016)
河南省教育厅科技攻关项目(2007150018)
