This article describes, in general, the methods for studying chromophores in lignin during bleaching process. Methods introduced include UV, UV Visible, IR, NMR, Raman and ESR spectroscopy.

• 简要综述了漂白过程中木素发色基团的几种研究方法,主要包括:紫外光谱和紫外可见光谱法;红外光谱法;核磁共振谱法;喇曼光谱法