色谱信号的基线校正新技术  

New technology of baseline correction in chromatography

作　　者：王瑛[1] 莫金垣[1] 

机构地区：[1]中山大学化学与化学工程学院,广东广州510275

出　　处：《计算机与应用化学》2003年第5期701-702,共2页Computers and Applied Chemistry

基　　金：国家自然科学基金(29975033);广东省自然科学基金(980340)

摘　　要：色谱信号的基线漂移问题严重影响了分析的准确性。本文在充分利用小波函数的优良性能基础上,综合运用曲线拟合与阈值截断技术,首次提出了用于色谱信号基线校正的阈值拟合技术(TFT)。该技术能将信号中的漂移基线准确提取出来并对原信号进行校正,大大提高了分析的精度。该方法操作简单,结果准确,人为因素影响小,能使基线漂移问题得以有效解决。The drifting baselines in chromatography affect the veracity of analysis gready. In this paper, Threshold Fitting Technology ( TFT ) was presented to subtract the baselines from the original signals and emendate the signals. In TFT, curve fitting and threshold technology are both employed, and the good qualities of wavelet are adopted, too. TFT can improve the precision of chromatography a-nalysis by correct the baseline accurately.

关 键 词：色谱信号 校正技术 色谱小波 阈值拟合 基线漂移 色谱分析 

分 类 号：O657.7[理学—分析化学]