Method for monitoring an aqueous flow using selective film

• US 6,232,783 B1
• Filed: 06/15/1999
• Issued: 05/15/2001
• Est. Priority Date: 12/02/1997
• Status: Expired due to Fees

• Current Assignee: Brims Ness Corporation
• Original Assignee: John H. Merrill
• Inventors: Merrill, John H.
• Primary Examiner(s): Brown, Glenn W.
• Assistant Examiner(s): HAMDAN, WASSEEM H
• Application Number:
  US09/333,200
• Time in Patent Office: 700 Days
• Field of Search: 324/439, 324/71.1, 324/444, 340/627, 73/614.1, 73/191
• US Class Current: 324/439
• CPC Class Codes: G01N 27/10 Investigation or analysis specially adapted for controlling or monitoring operations or for signalling
• CPC Class Codes: G01N 33/1813 Specific cations in water, e.g. heavy metals
• CPC Class Codes: G01N 33/1886 using probes, e.g. submersible probes, buoys

Abstract

A method and apparatus for detecting contaminants in an aqueous flow. The method includes the steps of providing a conduit having at least one collection portion upon which is disposed a selective film, disposing the aqueous flow through the conduit, attracting contaminants to the collection portion such that they are bonded to the selective film, and detecting a contaminant, or contaminants, based upon a predetermined property of the plurality of contaminants bonded to the ion collection portion. The selective film may include a molecularly imprinted polymer, a crown ether, an antibody selective for biological contaminants, such as Giardia Lamblia and cryptosporidia, or for detecting organics such as dioxin or furan, a cyclodextrin, or a cyclophane. The apparatus includes a conduit having an collection portion with a selective film disposed thereon, a sensor that senses contaminants collected on the collection portion and sends a signal corresponding to a value of a predetermined property of the contaminants, and a microprocessor in communication with the sensor and programmed to process the signal and determine the presence of contaminant based upon the processed signal.

Claims

1. A method for detecting at least one contaminant in an aqueous flow comprising the steps of:

providing a conduit having at least one ion collection portion upon which is disposed a selective film such that said selective film is selective for said at least one contaminant;

disposing the aqueous flow through the conduit;

attracting at least one contaminant to said selective film; and

detecting said at least one contaminant based upon a predetermined property of said contaminant disposed upon said selective film.

2. The method as claimed in claim 1 wherein said selective film comprises a molecularly imprinted polymer.

3. The method as claimed in claim 1 wherein said selective film comprises a crown ether.

4. The method as claimed in claim 1 wherein said selective film comprises an antibody film.

5. The method as claimed in claim 4 wherein said antibody film comprises biological antibodies for detecting biological contaminants.

6. The method as claimed in claim 5 wherein said biological contaminants are selected from a group consisting of Giardia Lamblia and cryptosporidia.

7. The method as claimed in claim 4 wherein said antibody film comprises dioxin antibodies for detecting a dioxin.

8. The method as claimed in claim 4 wherein said antibody film comprises furan antibodies for detecting a furan.

9. The method as claimed in claim 1 wherein said selective film comprises a cyclodextrin.

10. The method as claimed in claim 1 wherein said selective film comprises a cyclophane.

11. An apparatus for detecting at least one contaminant in an aqueous flow, said apparatus comprising:

a conduit;

a collection portion disposed within said conduit, said collection portion comprising a selective film such that said selective film is selective for said at least one contaminant;

a sensor for sensing a plurality of contaminants collected on said collection portion and sending a signal corresponding to a value of a predetermined property of said contaminants; and

a microprocessor in communication with said sensor, said microprocessor being programmed to process said signal and determine the presence of at least one of said contaminants based upon the processed signal;

wherein the aqueous flow flows through said conduit, a plurality of contaminants are attracted to said selective film and are bonded to said selective film, said sensor senses the bonding of the contaminants to said selective film and sends to said microprocessor corresponding to the value of the predetermined property of the contaminants, and said microprocessor processes the signal and determines the presence of at least one of said contaminants based upon the processed signal.

12. The apparatus as claimed in claim 11 wherein said selective film comprises a molecularly imprinted polymer.

13. The apparatus as claimed in claim 11 wherein said selective film comprises a crown ether.

14. The apparatus as claimed in claim 11 wherein said selective film comprises an antibody film.

15. The apparatus as claimed in claim 14 wherein said antibody film comprises biological antibodies for detecting biological contaminants.

16. The apparatus as claimed in claim 15 wherein said biological contaminants are selected from a group consisting of Giardia Lamblia and cryptosporidia.

17. The apparatus as claimed in claim 14 wherein said antibody film comprises dioxin antibodies for detecting a dioxin.

18. The apparatus as claimed in claim 14 wherein said antibody film comprises furan antibodies for detecting a furan.

19. The apparatus as claimed in claim 11 wherein said selective film comprises a cyclodextrin.

20. The apparatus as claimed in claim 11 wherein said selective film comprises a cyclophane.