Small volume liquid-liquid extraction device and method of use
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United States of America Patent
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N/A
Issued Date -
Sep 20, 2007
app pub date -
Mar 14, 2006
filing date -
Mar 14, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A device and method for performing small volume liquid-liquid extraction. A slug of a liquid specimen is aspirated into a tube, such as a pipette or pipette tip. The slug of the liquid specimen is caused to contact a filament array that resides within the tube. The slug of the liquid specimen is caused to spread across and adhere to individual filaments of the filament array as it is drawn through the tube. A slug of an extracting solvent that is immiscible with the liquid specimen is subsequently aspirated into the tube and contacted with the liquid specimen-covered filaments. The extracting solvent is selected to extract a particular solute(s) from the liquid specimen. The extracting solvent within the tube may be caused to repeatedly traverse the filament array in order to enhance the extraction process. The solute-carrying extracting solvent is subsequently expelled from the tube for separation.
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