Quantitative produced water analysis using mobile1H NMR

Using PGSE NMR for chemical mixture analysis: Quantitative aspects

Pulsed gradient spin echo NMR coupled with a data processing approach such as direct exponential curve resolution algorithm may be used to resolve individual components in a mixture. Differences in the diffusivities of the components lead to differences in their signal decay behavior in the experiment and allow for pure component spectra to be resolved. Because the experiment is echo-based, dif...

NMR-Spectroscopy in Drug Analysis Quantitative NMR Spectroscopy

Quantitative analysis of phospholipids by 31P-NMR.

High-field 31P nuclear magnetic resonance spectroscopy was used to quantitate phospholipids in mixtures in organic solvents. The sample is dissolved in chloroform-methanol and analyzed at 161.7 MHz with decoupling of the protons. Signals were identified using authentic compounds, and their relative distribution was measured in mole percent. The method has good accuracy and reproducibility, and ...

Characterization of antibacterial compounds produced by the actinomycetes using NMR spectral analysis

A total of 3 strains were found with potential antibacterial activity. The MMKK5 strain showed moderate, good and excellent growth in GAA broth during 7, 14 and 21 day of incubation respectively while in starch-casein broth weak growth observed in 7 days incubation but finally at twenty one days showed excellent growth. MMKK2 showed moderate to good growth up to 21 days of incubation. Whereas, ...

Quantitative analysis of protein-ligand interactions by NMR.

Protein-ligand interactions have been commonly studied through static structures of the protein-ligand complex. Recently, however, there has been increasing interest in investigating the dynamics of protein-ligand interactions both for fundamental understanding of the underlying mechanisms and for drug development. NMR is a versatile and powerful tool, especially because it provides site-specif...