Method and means for vaporizing liquids for detection or...

Details Method and means for vaporizing liquids for detection or... Method and means for vaporizing liquids for detection or...

G - Physics

01

N

73/97

G01N 25/14 (2006.01)

Patent

CA 1227950

ABSTRACT OF THE DISCLOSURE Method of vaporizing a solution containing a solvent and molecules of interest for detection or analysis, where the molecules of interest are non-volatile or ionic or thermally labile or a combination thereof. The method involves partially vaporizing the solution in a heated passageway; controlling the temperature of the solution in the passageway to maintain a predetermined degree of vaporization as the flow rate or solu- tion composition varies; spraying the partially vaporized solution through a nozzle to form a thermospray of relatively dry particles entrained in an intense vapor jet; controlling the downstream environment to prevent recondensation of solu- tion of the molecules of interest. The remaining solvent carried by the relatively dry particles is vaporized by internal enthalpy. Apparatus for the practice of this method is also disclosed.

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