Inexpensive Submersible Long-Term Dissolved Oxygen Recorder

Polestar Technologies, Inc. proposes a Phase II SBIR Project to complete the development of an inexpensive compact optical system for continuous dissolved oxygen monitoring in areas at risk of eutrophication induced by hypoxia and anoxia. The proposed monitor will facilitate the development of improved theoretical models by enabling better data collection with regard to spread and degree of oxygen reduction occurring in the suspect areas. This monitor will also significantly reduce maintenance costs and improve reliability of data. An innovative sensor design will incorporate a unique biostatic barrier that has been shown to inhibit biological encapsulation of the system¿s sensing membrane. The Phase II effort will result in the development of prototypes to be tested in the Chesapeake Bay.