The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2021
Filed:
Aug. 17, 2018
Paul K. Westerhoff, Scottsdale, AZ (US);
Xiangyu BI, Tempe, AZ (US);
Shahnawaz Sinha, Chandler, AZ (US);
Jonathan D. Posner, Seattle, WA (US);
Charlie Corredor, Seattle, WA (US);
Paul K. Westerhoff, Scottsdale, AZ (US);
Xiangyu Bi, Tempe, AZ (US);
Shahnawaz Sinha, Chandler, AZ (US);
Jonathan D. Posner, Seattle, WA (US);
Charlie Corredor, Seattle, WA (US);
Arizona Board of Regents on behalf of Arizona State University, Scottsdale, AZ (US);
University of Washington, Seattle, WA (US);
Abstract
A composition for dry reagent colorimetric sensing of nanoparticles in aqueous media, including sodium borohydride (NaBH), methylene blue (MB), and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) in the form of a powdered mixture. The composition may be formed by combining MB, HEBES, and water to yield an aqueous mixture, removing water from the aqueous mixture to yield a solid mixture, and combining NaBHpowder with the solid mixture to yield the composition. The composition may be used to detect metallic nanoparticles an aqueous solution by combining the composition with an aqueous solution to yield a test solution, and assessing a concentration of the metallic nanoparticles in the test solution based on absorbance of light by the test solution. The composition may be provided in an assay kit for sensing nanoparticles in aqueous media.