【摘要】 腐殖酸是自然界中结构组成复杂的大分子天然有机物质,具有较强的络合、螯合、吸附和氧化还原能力,研究腐殖酸的物理化学性质与环境行为具有重要的意义。由于腐殖酸分子组成的不确定性,一些实验方法,如可见光吸收法、紫外吸收法、红外光谱法、核磁共振法、体积排阻色谱、在线裂解分析等已应用于实验研究中腐殖酸的表征。文章综述了上述表征方法在腐殖酸结构与性能研究中的应用,讨论分析了不同方法存在的优缺点。优化或寻求更为准确可靠的腐殖酸表征方法,将有助于对腐殖酸的深入研究。更多还原

【Abstract】 Humic acids are natural organic macromolecules which are ubiquitous and complicated in the environment,having great activation in reaction,and can complex or react with metal ions,oxide,hydroxide minerals,organic matters and toxic pollutants.Thus,many characterization methods are used in researching the relationships among its composition,molecular weight,structure and redox behavior of humic acid,such as Visible Spectrometer,Ultraviolet Spectrometer,Fourier Transform Infrared Spectroscopy(FTIR),Nuclear Magnetic Resonance(NMR),Size Exclusion Chromatography(SEC),Pyrolysis-Gas Chromatography-Mass Spectrometry and so on.This paper reviews these characterization methods.更多还原