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Fig. 1. Thin sections in the x–y direction (planar view) of a 45/50-Accusand column for a two-phase system (water–organic liquid). (A) Reconstructed raw image collected above the I K-edge. Organic liquid is white, the aqueous phase is dark gray, and porous-medium grains are light gray. (B) False-color images, created by overlapping the binary images obtained separately for each fluid. Organic liquid is red, the aqueous phase is blue, and porous-medium grains (and unresolved fluid) are light gray.
