腐植酸物质的表面增强拉曼散射

腐植酸物质的表面增强拉曼散射Ｅ．Ｊ．Ｌｉａｎｇ（梁二军）１，３，Ｙ．Ｈ．Ｙａｎｇ（杨育晖）３，Ｗ．Ｋｉｅｆｅｒ３１．郑州大学物理工程学院郑州４５００５２２．中国科学院化学研究所北京１０００８０３．ＩｎｓｔｉｔｕｔｆｕｅｒＰｈｙｓｉｋａｌｉｓｃｈｅＣｈ...

Surface Enhanced Raman Scattering of Naturally Occurring Humic Substances

Abstract A new method by surface enhaneced Raman spectroscopy for clarifying the structure and the properties of naturally occurring humic substances is presented. This technique is able to provide abundant structural and compositional information and is very sensitive and selective to humic substances extracted from each environment. It is shown that humic substances may have two or more chemical constituents of aromatic compounds. Humic substamces extracted from some soils and sea water are rich in carboxylate groups and possibly also 1,3 substituted heterocyclic aromatic constituents while those from black soil and coals are poor. The method is suitable for studying the binding sites of humic substances with metal ions.