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New multi-use device can shed light on oxygen intake
Date:9/22/2009

is placed on the tip of an optrode.

Oxygen binds to the fluorescent dye. When a blue light is passed through the optrode, the dye emits red light back. The complex analysis of that red light reveals the concentration of oxygen present at the tip of the optrode.

The optrode is oscillated between two points, one just above the surface of the sample and another a short distance away. Based on the difference in the oxygen concentrations, called flux, the amount of oxygen being taken in by the sample is calculated.

It's the intake, or oxygen transportation, that Porterfield said is important to understand.

"Just knowing the oxygen concentration in or around a sample will not necessarily correlate to the underlying biological processes going on," he said.

Porterfield said future work will focus on altering the device to measure things such as sodium and potassium intake as well. The National Science Foundation funded the research.


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Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert  

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