The performance of SCF as a solvent can be greatly affected by addition of a cosolvent to the system. A cosolvent can be added to a SCF to enhance its solvent strength and/or selectivity.

• 在超临界流体中加入少量的共溶剂能对其溶剂性能产生很大的影响，它能提高超临界流体的溶剂强度和选择性。