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:
Sep. 12, 2017
Filed:
Mar. 09, 2016
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Chanbasha Basheer, Dhahran, SA;
Mousa Yaser Amayreh, Dhahran, SA;
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Abstract
An automated dispersive liquid-liquid microextraction method of detecting and quanta N-nitrosamines in an aqueous sample. The method includes (a) extracting an aqueous solution containing the N-nitrosamines by mixing an extraction solvent and a dispersive solvent with the aqueous solution, such that the N-nitrosamines, or a portion thereof, re-distribute from the aqueous solution to the extraction solvent, (b) permitting the resulting mixture in (a) to form a two-phase mixture containing an aqueous phase comprising containing the aqueous solution with reduced amounts of the N-nitrosamines and an organic phase containing the extraction solvent with the N-nitrosamines extracted from the aqueous solution, (c) injecting the organic phase, or a portion thereof, into an injection port of a gas chromatograph coupled with at least one mass spectrometer, and (d) analyzing the N-nitrosamines by gas chromatography and mass spectrometry to detect and quantify the concentration of the N-nitrosamines in the aqueous solution.