Characterization of soil organic nitrogen after addition of biogenic waste composts by means of NMR and GC-MS
1998
Siebert, Stefanie | Knicker, Heike | Hatcher, Mark A. | Leifield, Jens | Kögel-Knabner, I.
Este trabajo constituye el Capítulo 17 del libro.-- El DOI del volumen 707 es: 10.1021/bk-1998-0707.
Mostrar más [+] Menos [-]Application of composts to soils leads to increases in soil organic carbon and nitrogen. The effect of biowaste compost on the chemical composition of the organic N fraction was examined in different soils. Sandy and loamy soils were mixed with biowaste composts, both fresh and mature, and incubated for eighteen months. NMR spectroscopic characterization of the bulk samples and their residues after hydrolysis with 6 N HCl revealed no major changes in the organic nitrogen functionality as a result of the compost application. These spectra show that more than 80% of the total organic nitrogen of all samples was derived from peptide-like material. This conclusion was supported by the results obtained from tetramethylammonium hydroxide (TMAH) thermochemolysis.
Mostrar más [+] Menos [-]Peer reviewed
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