Chemistry: analytical and immunological testing – Including sample preparation – Liberation or purification of sample or separation of...
Patent
1995-09-14
1997-10-21
Soderquist, Arlen
Chemistry: analytical and immunological testing
Including sample preparation
Liberation or purification of sample or separation of...
436174, G01N 100
Patent
active
056795807
ABSTRACT:
Dissolved components of a liquid sample are recovered for analysis by delivering the sample to a concentrator comprising a cylindrical receptacle into which an uncontaminated gas, such as air, is introduced in a direction tangentially of the cylindrical wall. The gas is under sufficient pressure to effect swirling of the gas and liquid sample and atomization of the sample to rapidly evaporate the same and cause a residue containing the dissolved components to be deposited on the interior surface of the wall. A reconstituting solvent is then admitted to the receptacle to dissolve the residue and provide a reconstituted, concentrated sample for analysis. If desired, the sample may be concentrated to a given volume rather than to complete dryness. In nonlaboratory applications, a dilute liquid substance may be processed by rapid evaporation to provide a final product of desired concentration.
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Ball Carroll E.
Cage Brian R.
Fischer Michael F.
Gorman Paul G.
Steele David H.
Midwest Research Institute
Soderquist Arlen
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