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:
Jul. 12, 2022
Filed:
Oct. 29, 2020
Applicant:
Saudi Arabian Oil Company, Dhahran, SA;
Inventors:
Assignee:
Saudi Arabian Oil Company, Dhahran, SA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/33 (2006.01); A01N 57/34 (2006.01); G01N 21/78 (2006.01);
U.S. Cl.
CPC ...
G01N 21/33 (2013.01); A01N 57/34 (2013.01); G01N 21/78 (2013.01);
Abstract
The present application discloses methods for detecting and quantifying tetrakis(hydroxymethyl) phosphonium sulfate (THPS) in a water sample. In the methods, a water sample is mixed with a KMnOsolution to form a mixture. An intensity of KMnOabsorption in the mixture is then measured at a wavelength of 525 nm. The measured intensity is normalized by subtracting a background intensity at a wavelength of 650 nm. The presence and concentration of THPS in the water sample can then be determined by comparing the normalized intensity with intensity values of KMnOabsorption of calibration samples comprising KMnOand known THPS concentrations.