Journal of magnetic resonance.
Publisher:
Academic Press,. San Diego : Elsevier (2004)
Frequency: Monthly
Country: United States
Language: English
Start Year:1997 -
ISSN:
1090-7807 (Print)
1096-0856 (Electronic)
1090-7807 (Linking)
1096-0856 (Electronic)
1090-7807 (Linking)
Impact Factor
2.2
2022
| NLM ID: | 9707935 |
| (DNLM): | SR0089794(s) |
| (OCoLC): | 35454788 |
| LCCN: | 97-658016 |
| Classification: | W1 JO748DB |
The role of diffusion in ferritin-induced relaxation enhancement of protons. The influence of proton diffusion on nuclear magnetic resonance (NMR) relaxation was investigated in the presence of horse spleen ferritin at 7 T. Binary mixtures of water and glycerol were used to control diffusion within the range of 0.6-2.0 × 10(-9)m(2)/s, which was confirmed by pulsed gradient techniques. The effect of chemical exchange by hydrolysis between water and glycerol on relaxation was characterized with Carr-Purcell-Meiboom-Gill (CPMG) dispersion experiments. The relaxation rate enhancement of the protons due to ferritin was found to be inversely proportional to the diffusion co...
A new method for quantitation of spin concentration by EPR spectroscopy: application to methemoglobin and metmyoglobin. A new method of EPR spectral analysis is developed to quantitate overlapping signals. The method requires double integration of a number of spectra containing the signals in different proportions and the subsequent solution of a system of linear equations. The result gives the double integral values of the individual lines, which can then be further used to find the concentrations of all the paramagnetic species present. There is no requirement to deconvolute the whole spectrum into its individual components. The method is employed to quantify different heme species in methemoglobin and metmyo...