Inventors: Merrill JH
Method for monitoring an aqueous flow using selective film
Publication date: 2001
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.
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