M. Ashrafkhorassani et Lt. Taylor, COMPARISON OF MODIFIER ADDITION TO THE MATRIX VERSUS MODIFIER ADDITION TO THE FLUID IN THE SUPERCRITICAL-FLUID EXTRACTION OF PCBS FROM RIVER SEDIMENT, American laboratory, 27(18), 1995, pp. 23
With the addition of a polar modifier to supercritical carbon dioxide,
it is possible to enhance its solvent properties with regard to polar
materials.