SAMPLE PRETREATMENT AND EXTRACTION
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United States of America Patent
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Issued Date -
Sep 3, 2009
app pub date -
Feb 28, 2008
filing date -
Feb 28, 2008
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Abstract
A method for pretreating and extracting a liquid sample by sorbing an aqueous liquid sample, including an organic analyte and an acid or a base, in a solid sorbent material, and at least partially neutralizing the acid or base by reaction with neutralizing ions retained on a support surface, and contacting the liquid sample-sorbed sorbent material at elevated temperature and pressure with an organic solvent to extract the analyte into said solvent, preferably in a vessel having an extraction chamber with a zirconium metal interior surface.
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