Directly coupled sample changer system for fluid NMR spectroscop

Details Directly coupled sample changer system for fluid NMR spectroscop Directly coupled sample changer system for fluid NMR spectroscop

1993-10-14

1995-03-14

Arana, Louis

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324318, G01V 300

Patent

active

053979893

ABSTRACT:
An NMR spectrometer (10) for the measurement of liquid samples having a probe head (20) exhibiting an upper and a lower support (21 or 22), a connector (5) for a feed conduit (15) for the introduction of a liquid sample (1) into the spectrometer (10) and a connector (6) for a drain conduit (16) for the drainage of the liquid sample (1) out of the spectrometer (10), a sample tube (3), arranged between the upper and the lower supports (21 or 22), for the acceptance of the fluid sample (1), whereby the one end of the sample tube (3) is connected to the connector (5) for the feed conduit (15) and the other end to the connector (6) for the drain conduit (16), exhibits, coaxially to the sample tube (3) a further tube (4) for the acceptance of a calibration fluid (2) which, on one end, is connected to an additional connector (7) for a feed conduit (17) to introduce the calibration fluid (2) into the spectrometer (10) and, on its other end, to an additional connector (8) for a drain conduit (18) to drain the calibration fluid (2) out of the spectrometer (10). In this manner, it is possible to measure the sample fluid (1) in a simple fashion, without the previous mixing of additives and, subsequent to the measurement, to regain the sample fluid in its original state, while allowing for the introduction of a calibration fluid (2) for field stabilization and for the quantitative comparison of line intensities.

REFERENCES:
patent: 3525928 (1970-08-01), Nagao et al.
patent: 4638251 (1987-01-01), King
patent: 4775836 (1988-10-01), Starewicz et al.
patent: 5221903 (1993-06-01), Kasten et al.
GB-Book: M. L. Martin et al.: "Practical NMR Spectroscopy" Heyden & Son Ltd., London, 1980.
Catalog 5/92-7 from Wilmad Class Company in Buena, N.J. 08310 USA, pp. 28 and 29.
NMR-Spektroskopie, H. Gunther, 1983, pp. 52-54, chapter 3.1.
Direct Coupling of a Liquid Chromatograph to a Continuous Flow Hydrogen Nuclear Magnetic Resonance Detector for Analysis of Petroleum and Synthetic Fuels, 266B Analytical Chemistry, James F. Haw et al., 1980 pp. 1135-1140.

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