Solid phase extraction method and apparatus

Details Solid phase extraction method and apparatus Solid phase extraction method and apparatus

1993-06-24

1995-04-04

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210636, 210660, 21032175, 21032184, 21050042, 2105021, 210505, 210 87, 210138, 210142, 210145, 210909, B01D 1504

Patent

active

054034892

ABSTRACT:
A method and apparatus for performing solid phase extraction (SPE) on a fluid that contains solubles and suspended solids. The method includes: (a) providing a volume of fluid that contains solubles and suspended solids, (b) processing the volume of fluid to extract solubles therefrom by the steps comprising: (i) passing a first portion of the volume of fluid through a SPE medium that has first and second sides, the first portion of the volume of fluid passing through the SPE medium from the first side to the second side; and then (ii) passing a second portion of the volume of fluid through the SPE medium from the second side to the first side; and (c) repeating step (b) a plurality of times such that no substantial amount of the suspended solids is removed from the processed volume of fluid and solubles are retained on the SPE medium. The apparatus includes a conduit, a SPE medium located in the conduit, and a fluid flow direction altering mechanism or a SPE rotating mechanism.

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