Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1996-04-26
1997-09-16
Porta, David P.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
25033907, 364498, G01J 328
Patent
active
056683731
ABSTRACT:
This invention provides methods and apparatus for determining the presence or absence of a specific constituent in a mixture. The method includes the steps of (a) applying energy to the mixture to cause constituents in the mixture to produce characteristic patterns of spectral lines and detecting quantity values at the spectral lines, wherein a quantity value may represent a contribution of two or more constituents; (b) comparing detected quantity values for a number N of spectral lines from a pattern of spectral lines characteristic of the specific constituent with known quantity values for the N spectral lines; (c) determining whether the detected quantity values for the N spectral lines fall within a predetermined error range, and; (d) determining the presence of the constituent in the mixture when detected quantity values of a number of spectral lines less than N fall within the predetermined error range.
REFERENCES:
patent: 4707603 (1987-11-01), Niemela et al.
patent: 5072115 (1991-12-01), Zhou
patent: 5175430 (1992-12-01), Enke et al.
patent: 5247175 (1993-09-01), Schoen et al.
patent: 5440119 (1995-08-01), Labowsky
patent: 5453613 (1995-09-01), Gray et al.
patent: 5475612 (1995-12-01), Espinosa et al.
patent: 5481476 (1996-01-01), Windig
Abraham et al., "Data Comparison Study Between Field and Laboratory Detection of Polychlorinated Biphenyls and Polycyclic Aromatic Hydrocarbons at Superfund Sites," Haz. Waste & Haz. Mat., 10:461-473 (1993).
Bendl et al., "MS-UTIL: a program for interpretation and manipulation of mass spectra and chemical structures," Comput. Methods Programs Biomed. 46:23-28 (1995).
Lareau et al., "Peak identification for Mass Spectroscopy," Surface and Interface Analysis, 17:38-42 (1991).
Robbat et al., "Evaluation of a Thermal Desorption Gas Chromatograph/Mass Spectrometer: On-Site Detection of Polychlorinated Biphenyls at a Hazardous Waste Site," Analytical Chemistry 64:358-364 (1992).
Robbat et al., "On-Site Detection of Polycyclic Aromatic Hydrocarbons in Contaminated Soils by Thermal Desorption Gas Chromatography/Mass Spectrometry," Analytical Chemistry 64:1477-1483 (1992).
Stauffer et al., "Probability-Based-Matching Algorithm with Forward Searching Capabilities for Matching Unknown Mass Spectra of Mixtures," Anal. Chem. 57:1056-1060 (1985).
Steiger et al., "Automated peak interpretation in low-resolution SIMS spectra; a comparison of two algorithms," Vacuum 33:321-327 (1983).
Gankin Yuriy V.
Robbat, Jr. Albert
Bruce David Vernon
Porta David P.
Trustees of Tufts College
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