公开(公告)号：US10705018B2

公开(公告)日：2020-07-07

申请号：US16234928

申请日：2018-12-28

申请人： Authentix, Inc.

发明人： Olusola Soyemi ,  Anahita Kyani

IPC分类号： G01N21/64 ,  G01N33/28 ,  C10L1/00

摘要： A method of fuel analysis comprising subjecting a fuel sample comprising a fuel marker and a fuel matrix to fluorescence spectroscopy to generate a measured emission spectrum comprising a first spectral component (type and amount of marker in sample), a second spectral component (spectral perturbation), and a third spectral component (matrix fluorescence); deconvoluting the measured emission spectrum to yield a deconvoluted measured emission spectrum (first and second spectral components) via removal of third spectral component; decoupling the deconvoluted measured emission spectrum to yield a corrected emission spectrum (first spectral component) via a projection function which orthogonally projects the deconvoluted measured emission spectrum onto a subspace devoid of the second spectral component; and determining the amount of fuel marker in the fuel sample from the corrected emission spectrum. The method of fuel analysis comprises temperature corrections.

公开(公告)号：US09995681B2

公开(公告)日：2018-06-12

申请号：US14808041

申请日：2015-07-24

申请人： Authentix, Inc.

发明人： Jeffrey L. Conroy ,  Philip B. Forshee ,  Paul J. Cronin ,  Olusola Soyemi

IPC分类号： G01N21/64 ,  G01N33/28

CPC分类号： G01N21/643 ,  G01N33/2882 ,  G01N2021/6439

摘要： Device and methods for detecting/quantifying a fluorescent taggant in a liquid sample. Generally, the liquid samples are fuels having low concentrations (measured in ppb) of a fluorescent taggant. The detection/quantification generates a predicted concentration of the fluorescent tagging compound using a process selected from the group of a multivariate process, a background subtraction process, or a combination of both. The invention addresses the detection of an adulteration of gasoline and diesel fuels.