FLOW-BY SOLID PHASE EXTRACTION DEVICE

PURPOSE: Provided is a method for removing dissolved species from a fluid while allowing suspended solid particles to remain in the fluid, where the fluid includes dissolved species and suspended solid particles. CONSTITUTION: A method includes providing a solid phase extraction article(10) comprising a first end(18), a second end(20) opposite the first end, an axis(A) extending from the first end to the second end, and a porous, particle loaded, fibrous sheet material(12) formed into a spiral configuration about the axis. The sheet material is preferably wound around itself, each layer of sheet material is preferably spaced from each adjacent layer of sheet material, and the sheet material comprises a first working surface, a second working surface opposite the first working surface, and an inner portion between the first and second working surfaces, where the inner portion comprises active particles. The method further includes passing a fluid including dissolved species and suspended solid particles through the solid phase extraction article from the first end to the second end in an axial direction. The suspended solid particles preferably do not substantially obstruct the first or second working surfaces so that the fluid including dissolved species can reach the inner portion of the sheet material. The fluid also preferably contacts both the first and second working surfaces of the sheet material, and active particles contained within the sheet material remove the dissolved species from the fluid as the fluid passes through the solid phase extraction article.