Analysis of 13C and 15N CPMAS NMR‐spectra of soil organic matter and composts

FEBS Letters

Knicker, H.²  Gonzalez-Vila, F.J.¹  Fründ, R.²  Haider, K.M.⁴  Almendros, G.³  Lüdemann, H.-D.² 

[1] Centro de Recursos Naturales y Agrobiologia, CSIC, Sevilla, Spain;Inst. für Biophysik, Universität Regensburg, D-8400 Regensburg, Germany;Instituto Clencias, Medioamblentales, CSIC, Madrid, Spain;Inst. für Pflanzenernährung und Bodenkunde, D-3300 Braunschweig, Germany

关键词: 15N-NMR;    13C-NMR;    CPMAS;    Compost;    Humic acid;   

DOI  :  10.1016/0014-5793(91)80458-F

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

¹⁵N and ¹³C CPMAS spectra of composted plants are presented. The plants (L. rigidium and Zea mays) were grown in ¹⁵N enriched medium and fennented for several months until an approx. 80% of the dry matter was lost. In all ¹⁵N spectra the secondary amide/peptide peaks a 87 ppm contributes more than 80% of the total intensity. No new ¹⁵N peaks are formed during the fermentation process. Older attempts to assign a significant fraction of humic acid nitrogen to heteroaromatic structures formed in the fermentation process are thus most probably wrong.

【 授权许可】

Unknown