Radiant energy – Ionic separation or analysis – Methods
Patent
1979-10-12
1981-07-28
Anderson, Bruce C.
Radiant energy
Ionic separation or analysis
Methods
250289, 73 611C, 159 13R, 159 49, B01D 5944, B01D 122
Patent
active
042812461
ABSTRACT:
An interface between a liquid chromatograph and a mass spectrometer is provided for conducting a liquid stream from the chromatograph to the spectrometer. The stream passes from the chromatograph continuously along a tapered concentrator wire toward the narrow end of the wire. The stream is heated in order to evaporate solvent therefrom and to increase the concentration of the solute therein. When the stream reaches the narrow end of the wire, the vacuum created by the mass spectrometer draws the stream through an elongated capillary tube which has a pointed carrier wire positioned therein. A gap is provided in the tube where the tube and the carrier wire intersect the concentrator wire. The capillary tube is either formed with a reduced diameter at one end adjacent the spectrometer or the carrier wire has a ball of solder at that end in order to partially restrict the flow through the tube. The carrier wire is longitudinally moveable within the tube in order to control the flow of material into the spectrometer. Other uses for the tapered and heated wires are contemplated for removing solvent from a liquid stream in order to diminish the stream's flow rate or to increase the concentration of the solute of such a stream. Methods for conducting liquid from a liquid chromatograph to a mass spectrometer and for removing solvent from a liquid stream are also disclosed.
REFERENCES:
patent: 2601097 (1952-06-01), Crawford
patent: 3080746 (1963-03-01), Nerheim
patent: 3896661 (1975-07-01), Parkhurst et al.
patent: 3929004 (1975-12-01), Gunew et al.
patent: 3997298 (1976-12-01), McLafferty et al.
patent: 4055987 (1977-11-01), McFadden
patent: 4112297 (1978-09-01), Miyagi et al.
Christensen Richard G.
Hertz Harry S.
White, V Edward
Anderson Bruce C.
The United States of America as represented by the Administrator
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