noted above the pressurized fluid solvent used in the present invention is either a pressurized liquid solvent or a densified fluid solvent although a variety of solvents may be used it is preferred that an inorganic substance such as carbon dioxide xenon nitrous oxide or sulfur hexafluoride be used as the pressurized fluid solvent for cost and environmental reasons liquid supercritical or subcritical carbon dioxide is the preferred pressurized fluid solvent furthermore to maintain the pressurized fluid solvent in the appropriate fluid state the internal temperature and pressure of the system must be appropriately controlled relative to the critical temperature and pressure of the pressurized fluid solvent for example the critical temperature and pressure of carbon dioxide is approximately 31 degrees celsius and approximately 73 atmospheres respectively the temperature may be established and regulated in a conventional manner such as by using a heat exchanger in combination with a thermocouple or similar regulator to control temperature likewise pressurization of the system may be performed using a pressure regulator and a pump and or compressor in combination with a pressure gauge these components are conventional and are not shown in fig1 and 2 as placement and operation of these components are known in the art the system temperature and pressure may be monitored and controlled either manually or by a conventional automated controller which may include for example an appropriately programmed computer or appropriately constructed microchip that receives signals from the thermocouple and pressure gauge and then sends corresponding signals to the heat exchanger and pump and or compressor respectively unless otherwise noted the temperature and pressure is appropriately maintained throughout the system during operation as such elements contained.