APPLICATION OF 1H-NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY TO STUDY THE STRUCTURE OF SOME HUMIC ACIDS | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 3, Volume 28, Issue 12, December 2003, Page 8499-8506 PDF (375.24 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2003.247783 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. A. Taha,; A. S. Modaihsh; M. O. Mahjoub | ||||
| Soli Sci. Dept., College of Agric., King Saud University, Saudi Arabia | ||||
| Abstract | ||||
| A study has been made using the'H-n.m.r. spectroscopic technique to inllestigate the structure or some humic acids extracted (rom different composts. The results galle useful information about the nature of the extracted humic acids, whiCh differed slightly from one to another and quite similar with a litlle difference in the intensity of the resonances.The 'H-NMR spectra of the extracted humic acids identified polymethylene compounds and terminal melhyl groups 01 polymethylene chains. In addition, protons attached to carbon J to carboxylic groups or aromatic rings have also identified. 'H-NMR spectra of the studied humic acids showed that protons of aromatic rings are presented in humic acids. The humic acid extracted from Bostan compost (Bos-HA) contained the highest aliphatic hydrogen content. On the other hand, humic adds from Sanbest (San·HA) and AI-Enzy (Enz-HA) composts exhibited the highest aromatic hydrogen content. | ||||
| Keywords | ||||
| compost; humic acids (HA); 'H-NMR spectroscopy | ||||
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