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. 03, 2017
Filed:
May. 23, 2014
Nederlandse Organisatie Voor Toegepast—natuurwetenschappelijk Onderzoek Tno, 's-Gravenhage, NL;
James Peter Robert Day, 's-Gravenhage, NL;
Marijn Sandtke, 's-Gravenhage, NL;
Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO, 's-Gravenhage, NL;
Abstract
The present disclosure concerns a method and detector () for detecting an analyte () in a sample volume (), such as nitrosamine in an amine solvent. The method comprises measuring a resonance Raman spectrum (I) with a first light beam (PI) matching an electronic transition of the analyte (). The detection of the analyte is enhanced by measuring an off-resonance Raman spectrum () using a second light beam (P) that is shifted in wavelength at least 10 nm away from the electronic resonance. The resonance Raman signal (S) of the analyte () is isolated from the background (Q, Q) by a difference analysis between the resonance and off-resonance Raman spectra (I, I). The method and detector () can be employed for detecting nitrosamine in a carbon capture process or plant () that employs an amine solvent.