质子核磁共振法测定腐植酸结构特征
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摘要: 作者采用质子核磁共振法对厦门港沉积物中的腐值酸进行了测定.在对腐值酸的活性官能团、元素组成及红外光谱测定结果的基础上,讨论了腐植酸的结构特征,实验结果给出了有关腐植酸中脂肪族化台物的构成单元、芳香族化合物上的取代官能团类型.结果表明,采用以DMSO-d为溶剂比采用以NaOD为溶剂所得到的腐植酸的H-NMR谱图效果要好,这一结果对于揭示不同来源和发育阶段的腐植酸在结构特征上的差异是有所帮助的.
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