Method for solid-phase micro extraction and apparatus therefor
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United States of America Patent
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Aug 17, 2010
Grant Date -
Mar 13, 2008
app pub date -
Apr 19, 2002
filing date -
Apr 19, 2002
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Abstract
The present invention is directed to a system for pre-treatment of a sample to be introduced in a chromatograph, and a method for performing solid-phase extraction of a component present in a sample. The system uses a syringe having a needle being provided with a porous body having a monolithic structure along at least an appropriate length of the needle and across an overall diameter of the needle. The method includes the steps of inserting the needle into the sample, passing the sample through the needle to retain an analyte within the porous body, and desorbtion of the retained analyte from the porous body.
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