✦ LIBER ✦

Quantitative analysis by nuclear magnetic resonance using precision coaxial tubing

✍ Scribed by Koichi Hatada; Yoshio Terawaki; Hiroshi Okuda

Publisher: John Wiley and Sons
Year: 1977
Tongue: English
Weight: 388 KB
Volume: 9
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270090906

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Quantitative analysis by n.m.r. using precision coaxial tubing is described. A solution of the intensity standard is placed in the central capillary and the sample of interest in the surrounding annulus. By this method the contamination of the sample by the standard compound can be avoided and an accurate determination can be carried out by using solutions of correct concentrations of the intensity standard. Applications to several types of quantitative problems are given. In order to get a higher accuracy and precision the experimental conditions were also studied.

📜 SIMILAR VOLUMES

Quantitative analysis by nuclear magneti

Quantitative analysis by nuclear magnetic resonance with fourier transform II13C resonance

✍ B. Thiault; M. Mersseman 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 497 KB

## Abstract Quantitative analyses have been carried out by ^13^C NMR spectroscopy using Fourier transformation. The Overhauser effect, due to the broad band decoupling of protons, has been suppressed using the two existing methods (gated decoupling and paramagnetic species), and results from each a

Quantitative analysis by nuclear magneti

Quantitative analysis by nuclear magnetic resonance with fourier transformation: I—Proton case

✍ B. Thiault; M. Mersseman 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 364 KB

## Abstract For quantitative analysis by NMR spectroscopy with Fourier transform, the usual experimental conditions have to be partly modified. Careful regulation of the delays between the different phases of the process is particularly important. The filters of the spectrometer and the calculation

Quantitative analysis of pyrrolizidine a

Quantitative analysis of pyrrolizidine alkaloid mixtures from Senecio vulgaris by carbon-13 nuclear magnetic resonance spectroscopy

✍ L. A. C. Pieters; A. J. Vlietinck 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 294 KB 👁 1 views

A I3C NMR method has been developed for obtaining simultaneously structural and quantitative information on mixtures of pyrrolizidine alkaloids from Senecio vulgaris L. (Compositae). The samples contained seneciphylline, senecionine, retrorsine and the corresponding E geometrical isomers, spartioidi

Regiospecific analysis of natural mixtur

Regiospecific analysis of natural mixtures of triglycerides using quantitative 13C nuclear magnetic resonance of acyl chain carbonyl carbons

✍ Giovanna Vlahov 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 167 KB 👁 2 views

High-resolution 13C NMR spectroscopy of the carbonyl carbons of triglyceride acyl chains was used as a quantitative method for the regiospeciÐc analysis of the triglyceride fraction of vegetable oils of di †erent botanical origins. The carbonyl carbon resonances of saturated, oleyl and linoleyl chai

Quantitation of Gluconeogenesis by 2H Nu

Quantitation of Gluconeogenesis by 2H Nuclear Magnetic Resonance Analysis of Plasma Glucose Following Ingestion of 2H2O

✍ John G. Jones; Rui A. Carvalho; A.Dean Sherry; Craig R. Malloy 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 79 KB

We present a simple 2 H NMR assay of the fractional contribution of gluconeogenesis to hepatic glucose output following ingestion of 2 H 2 O. The assay is based on the measurement of relative deuterium enrichment in hydrogens 2 and 3 of plasma glucose. Plasma glucose was enzymatically converted to g

Quantitative assessment of cartilage sta

Quantitative assessment of cartilage status in osteoarthritis by quantitative magnetic resonance imaging: Technical validation for use in analysis of cartilage volume and further morphologic parameters

✍ Heiko Graichen; Rüdiger v. Eisenhart-Rothe; Thomas Vogl; Karl-Hans Englmeier; Fe 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 133 KB 👁 2 views

## Abstract ## Objective Quantitative diagnostic tools for osteoarthritis (OA) are important for evaluating the treatment response to structure‐modifying drugs. This study was undertaken to test the technical validity (accuracy) of quantitative magnetic resonance imaging (qMRI) for reliable determ