Methylene Blue Dye Test Strips for Qualitative Detection of Hydroxyl Radicals

 

Description of Technology

 

Michigan State University’s invention is a method for indicating the presence of hydroxyl radicals in an aqueous solution. The method uses a simple procedure requiring inexpensive materials, without the addition of competitive probe chemicals that potentially can interfere with the reaction. Mythylene blue dye qualitatively indicates the presence of hydroxyl radicals by visible, distinct bleaching of the blue dye on a paper test strip. A lack of bleaching indicates the absence of hydroxyl radicals in the sample.

 

Key Benefits

  • Provides a rapid, qualitative, visual means of indicating the presence of hydroxyl radicals
  • Simple and inexpensive
  • Avoids the use of chemical probes, which are needed for previous methods
  • Could be applied to remediation of organic and solvent wastes, as well as wastewater treatment

 

Applications

 

The invention can be used to monitor the progress of in situ chemical oxidation of chlorinated solvents at clean-up sites, as well as checking for wastewater and effluent at treatment sites.

 

Patent Status

 

U.S. patent 7,939,340

 

Inventors

 

Andrea Satoh, Susan Masten, James Trosko

 

Tech ID

 

TEC2005-0084

 

Patent Information:

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For Information, Contact:

Raymond DeVito
Technology Manager
Michigan State University
devitora@msu.edu