Cross-polarized magic-angle-spinning NMR (CPMAS-NMR) techniques are assumed to be only semi-quantitative in the assessment of carbon distribution in humic substances or natural organic matter, due to a number of interferences such as spinning side bands (SSB) in spectra, paramagnetic species in samp
State of the Art of CPMAS 13C-NMR Spectroscopy Applied to Natural Organic Matter
β Scribed by Pellegrino Conte; Riccardo Spaccini; Alessandro Piccolo
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 10 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
For Abstract see ChemInform Abstract in Full Text.
π SIMILAR VOLUMES
13 C labeling was used to enhance the sensitivity of 13 C solid-state NMR to study the effect of tabletting on the polymorphism of a steroidal drug. The steroidal drug Org OD 14 was 13 C labeled and formulated into tablets containing only 0.5-2.5% active ingredient. The tablets were subsequently
Solid-state 13 C NMR spectroscopy and dipolar dephasing technique was used to determine the extent of condensation in various technical lignins. The accuracy of dipolar dephasing method was first investigated with the aid of some lignin model compounds and two various methods to determine the degree
The solid-state Nuclear Magnetic Resonance (NMR) was used to characterize surfaces of silica gels chemically modified by alkenyltrialkoxysilanes and trialkoxysilyl terminated 1,4-polyisoprenes. The formation of covalent bonds created between alkoxy functional groups from alkenyltrialkoxysilane or tr