✦ LIBER ✦

A Low Frequency 1H-NMR External Unit for the Analysis of Large Foodstuff Samples

✍ Scribed by Francesco Capozzi; Mauro A. Cremonini; Claudio Luchinat; Giuseppe Placucci; Carlo Vignali

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 63 KB
Volume: 138
Category: Article
ISSN: 1090-7807
DOI: 10.1006/jmre.1999.1729

No coin nor oath required. For personal study only.

✦ Synopsis

An inexpensive external unit that allows the use of a commercial high-resolution NMR spectrometer as a very low frequency instrument is described. The external unit is phase coherent, the pulse timing being given by the parent spectrometer. With the exception of the probe, the external unit does not contain any tuned elements. This permits easy change of frequency in the range 100 kHz-1 MHz. The external unit may be appropriately employed in food science where, in several cases, low frequency is desirable. An application to hen shell eggs at the frequency of 700 kHz is described.

📜 SIMILAR VOLUMES

Use of a low power, high frequency stabi

Use of a low power, high frequency stabilized capacitive plasma combined with graphite furnace vaporization for the atomic emission spectrometric analysis of serum samples

✍ S. Luge; J.A.C. Broekaert 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 610 KB

The analytical figures of merit of a stabilized capacitive plasma using Ar and He as plasma gases in combination with electrothermal evaporation in a modified Perkin-Elmer HGA 500 graphite furnace are given. The plasma is operated at 27.12 MHz, at a power of 150 W and with a gas flow between 30 l/h