Claims
- 1. An apparatus for directly measuring electrochemical properties of compounds in a high resistivity liquid comprising:
- (a) an electrolytic solution;
- (b) a housing including a hydrophilic membrane having a plurality of pores for containment of said electrolytic solution and for immersion in said high resistivity liquid;
- (c) said hydrophilic membrane for permitting passage of a portion of said electrolytic solution into said plurality of pores and for preventing substantial passage of said high resistivity liquid into said pores thereby facilitating the formation of an interface between said electrolytic solution and said high resistivity liquid in each of said plurality of pores and allowing extraction of said compounds in said high resistivity liquid into said electrolytic solution; and
- (d) a plurality of electrodes, including a porous sensing electrode, immersed in said electrolytic solution with at least the sensing electrode positioned directly on said membrane in proximate relationship to said interface between said electrolytic solution and said high resistivity liquid for detecting and measuring the concentration of said compounds extracted from the high resistivity fluid into the electrolytic solution.
- 2. The apparatus of claim 1 wherein said electrolytic solution is composed of a polar solvent.
- 3. The apparatus of claim 2 wherein said electrolytic solution is composed of an aqueous solution.
- 4. The apparatus of claim 3 wherein said electrolytic solution is composed of a sulfoxide based polar organic solvent.
- 5. The apparatus of claim 4 further having lithium chlorate added to the sulfoxide based polar organic solvent.
- 6. The apparatus as recited in claim 5 wherein said sulfoxide based polar organic solvent is dimethylsulfoxide.
- 7. The apparatus of claim 1 wherein said electrolytic solution is composed of carbonate based polar organic solvents.
- 8. The apparatus of claim 1 wherein said housing is a glass cylinder.
- 9. The apparatus of claim 1 wherein said plurality of electrodes comprises a reference electrode and a sensing electrode.
- 10. The apparatus of claim 9 wherein said reference electrode is composed of silver/silver chloride (Ag/AgCl).
- 11. The apparatus of claim 1 wherein said electrodes are sputtered onto the porous membrane.
- 12. The apparatus of claim 1 wherein said sensing electrode is epoxied to said permeable membrane.
Parent Case Info
This is a continuation-in-part application of a application Ser. No. 07/743,436, filed on Aug. 8, 1991.
US Referenced Citations (13)
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
743436 |
Aug 1991 |
|