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:
Oct. 23, 2018
Filed:
Jan. 12, 2016
Ecolab Usa, Inc., Saint Paul, MN (US);
John Wilhelm Bolduc, Inver Grove Heights, MN (US);
Eugene Tokhtuev, Duluth, MN (US);
Anatoly Skirda, Hermantown, MN (US);
Anna Pilipchenko, Duluth, MN (US);
Justin Scott Valenstein, Eagan, MN (US);
Amanda Bakken, Eagan, MN (US);
Stacy Fawbush, St. Paul, MN (US);
Jeffrey S. Hutchison, Minneapolis, MN (US);
Ecolab USA Inc., Saint Paul, MN (US);
Abstract
A method of fluorometrically detecting the concentration of chemical components in oxidizing formulations is disclosed. In a particular embodiment the detection is of the stabilizing component of picolinic acid, present in such formulations, although any component which fluoresces may be detected. According to the invention sample preparation of the oxidizing formulation includes adding to said sample an excess of reducing agent to bind peracid, and in the case of picolinic acid, adding to said sample an excess of terbium chloride. The sample then is subjected to radiation to induce fluorescence and the concentration of said chemical component is determined by a linear relationship between fluorescence emitted and the concentration of the target chemical.