| 用新近发展的1H NMR技术研究腐殖酸 |
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| 引用本文： | 王黎明,杨玉辉.用新近发展的1H NMR技术研究腐殖酸[J].波谱学杂志,1998,15(5):411-420. |
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| 作者姓名： | 王黎明 杨玉辉 |
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| 作者单位： | 1. 中国科学院武汉物理与数学研究所, 武汉 430071;2. 英国剑桥大学化学工程系, 剑桥 CB2 3RA |
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| 摘 要： | 将一些新近发展起来的1H NMR技术用于溶在不同溶剂(D2O,NaOH/D2O及DMSO-d6)中的腐殖酸样品的研究,这包括全相关谱方法(TOCSY),扩散谱方法和最大量子谱方法(MAXY).DMSO溶液的TOCSY谱中4与8之间的相关峰表明在腐殖酸中可能包含有不溶于水的多肽,扩散谱指出在碱性条件下,一些小分子脱离了腐殖酸聚合体,而MAXY谱编辑方法则使得一些细致的归属成为可能.
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| 关 键 词： | 腐殖酸 1H NMR TOCSY 自扩散测量 MAXY谱编辑 |
| 收稿时间： | 1998-03-26 |
APPLICATION OF NEWLY DEVELOPED 1H NMR TECHNIQUES TO THE STUDY OF HUMIC ACIDS |
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| Wang Liming,Mao Xi'an,Yang Yuhui.APPLICATION OF NEWLY DEVELOPED 1H NMR TECHNIQUES TO THE STUDY OF HUMIC ACIDS[J].Chinese Journal of Magnetic Resonance,1998,15(5):411-420. |
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| Authors: | Wang Liming Mao Xi'an Yang Yuhui |
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| Institution: | 1. Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071;2. Department of Chemical Engineering, University of Cambridge, Pembroke Street, CB2 3RA, Cambridge, UK |
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| Abstract: | Some newly developed one and two dimensional 1H NMR techniques, including totally correlated spectroscopy (TOCSY), self diffusion coefficient measurements and maximum quantum spectroscopy (MAXY), are applied to the study of a humic acid sample suspended or dissolved in D 2O, NaOH/D 2O and DMSO d 6. TOCSY experiments suggest that humic acids contain polypeptides that are soluble in DMSO but not in water, while the self diffusion coefficient measurements suggest that in basic solution there are small molecules that are not included in the humic acid aggregates. From the MAXY spectra, detailed assignments for the proton resonances become possible. |
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| Keywords: | Humic acids 1H NMR TOCSY Self diffusion measurement MAXY spectral editing |
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