	US 11,719,684 B2
	Elemental sulfur analysis in fluids
Jay Locklear, Houston, TX (US); and Clinton Crowe, Houston, TX (US)
Assigned to CONOCOPHILLIPS COMPANY, Houston, TX (US)
Filed by CONOCOPHILLIPS COMPANY, Houston, TX (US)
Filed on Oct. 2, 2020, as Appl. No. 17/62,281.
Claims priority of provisional application 62/910,501, filed on Oct. 4, 2019.
Prior Publication US 2021/0102932 A1, Apr. 8, 2021
Int. Cl. G01N 33/28 (2006.01); G01N 21/75 (2006.01)

CPC G01N 33/287 (2013.01) [G01N 21/75 (2013.01); Y10T 436/109163 (2015.01); Y10T 436/188 (2015.01)]

6 Claims

1. A method of determining an amount of elemental sulfur S8 in a fluid, said method comprising adding tetrabutylammonium hydroxide 30-hydrate in an organic solvent to said fluid to obtain a colored solution; measuring absorbance of said colored solution at a wavelength between 190-750 nm; comparing said measured absorbance of said colored solution with an absorbance of a standard solutions of elemental sulfur S8 of known concentrations to determine a concentration of elemental sulfur S8 in said fluid.