Chinese Journal of Magnetic Resonance ›› 2014, Vol. 31 ›› Issue (4): 523-534.doi: 10.11938/cjmr20140407

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An Automatic Baseline Correction Method for NMR Spectra

ZHONG Cai-jiao,CHEN Zhi-wei*,CHEN Zhong   

  1. Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance Research,Xiamen University, Xiamen 361005, China
  • Received:2014-03-01 Revised:2014-10-29 Online:2014-12-05 Published:2014-12-05
  • Contact: Zhi-Wei CHEN E-mail:chenzhiwei@xmu.edu.cn
  • About author:*Corresponding author:CHEN Zhi-wei, Tel:13030892886, E-mail: chenzhiwei@xmu.edu.cn.
  • Supported by:

    国家自然科学基金资助项目(81101037).

Abstract:

An automatic baseline correction method for nuclear magnetic resonance (NMR) spectra is presented. It is based on improved baseline recognition in peak regions using an iterative moving averaging algorithm, followed by an iterative baseline modeling procedure. The method combines advantages of two baseline correction methods in order to improve baseline modeling in peak regions. A set of baseline anchor points in peak regions are picked during baseline recognition, and utilized for baseline modeling with baseline points. The proposed baseline correction method was shown to perform well on
NMR spectra even when they have a large nonlinear baseline distortion.

Key words: nuclear magnetic resonance, automatic baseline correction, iteration, data processing

CLC Number: