Recipient Organization
Common Sensing Inc
(N/A)
CLARK FORK,ID 83811
Performing Department
(N/A)
Non Technical Summary
There is still a need for low-cost, reliable dissolved gas sensors for water quality in environmental monitoring, aquaculture wastewater treatment and industry in order to provide analytical capability to facilities, communities greatly in need of such capability as water budgets become increasingly stringent and re-use increaingly important. This project seeks to further integrate both Total Dissolved Gas Pressure Measurement and optical dissolved oxygen (DO) measurement by combining a new copper-based oxygen phosphor with the TDGP measurement system.
Animal Health Component
50%
Research Effort Categories
Basic
50%
Applied
50%
Developmental
(N/A)
Goals / Objectives
This Phase I study seeks to integrate the analytical techniques for measurement of two important parameters in water quality monitoring, Total Dissolved Gas Pressure (TDGP) and oxygen. Using a highly emissive photoluminescent copper complex (1), which exhibits UV light-induced fluorescence with properties superior to ruthenium complexes now in use (increased photostability, fluorescence output and low cost), we will evaluate the quenching by oxygen of the fluorescence of complex 1 when dissolved, suspended or coated as a film on the membranes used for TDGP measurement.
Project Methods
To do this we will design and fabricate an electronic prototype excitation/detection/pressure sensing module in which a variety of membrane materials and configurations can be tested for oxygen quenching of the fluorescence of embedded complex 1. Using the same material for the gas permeable TDGP membrane and as a support for the oxygen-sensitive (but non-consumptive) complex 1 allows the quenching process to occur in the gas phase and thereby retain its linearity. This not only simplifies the signal analysis needed for such an optical based sensor but also opens the door to further integration of optical measurement of an increasing number of gaseous analytes, required in water quality monitors for aquaculture, groundwater and wastewater treatment.