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1. WO1996005500 - SIGNAL PROCESSING FOR CHEMICAL ANALYSIS OF SAMPLES

Publication Number WO/1996/005500
Publication Date 22.02.1996
International Application No. PCT/US1995/009926
International Filing Date 03.08.1995
IPC
G01J 3/433 2006.01
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28Investigating the spectrum
42Absorption spectrometry; Double-beam spectrometry; Flicker spectrometry; Reflection spectrometry
433Modulation spectrometry; Derivative spectrometry
G01N 21/31 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
G01N 21/64 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
63optically excited
64Fluorescence; Phosphorescence
CPC
G01J 3/4338
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28Investigating the spectrum
42Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry
433Modulation spectrometry; Derivative spectrometry
4338Frequency modulated spectrometry
G01N 21/314
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
314with comparison of measurements at specific and non-specific wavelengths
G01N 21/64
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
63optically excited
64Fluorescence; Phosphorescence
G01N 2201/1293
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2201Features of devices classified in G01N21/00
12Circuits of general importance; Signal processing
129Using chemometrical methods
1293resolving multicomponent spectra
Applicants
  • BECKMAN INSTRUMENTS, INC. [US/US]; 2500 Harbor Boulevard P.O. Box 3100 Fullerton, CA 92634-3100, US
Inventors
  • OBREMSKI, Robert, J.; US
  • SILZEL, John, W.; US
Agents
  • SHELDON, Jeffrey, G. ; Sheldon & Mak, Inc. 9th floor 225 South Lake Avenue Pasadena, CA 91101-3021, US
Priority Data
08/292,79817.08.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SIGNAL PROCESSING FOR CHEMICAL ANALYSIS OF SAMPLES
(FR) TRAITEMENT DE SIGNAUX POUR L'ANALYSE CHIMIQUE D'ECHANTILLONS
Abstract
(EN)
A method and apparatus determines the analyte content of a sample by generating first and second input signals and directing the input signals to the sample. The input signals differ in wavelength by at least 3 nanometers. Due to the interaction between the input signals and the sample, first and second output signals are generated. Each output signal comprises a resonant signal whose peak wavelength is substantially independent of the wavelength of the respective input signal, and a non-resonant output signal whose peak wavelength is dependent upon the wavelength of respective input signal. A detector is used to detect the two output signals, and by distinguishing the resonant output signals from the non-resonant output signals, data about the analyte content of the sample is determined. Principal components regression analysis or multivariate quantitative analysis can be applied to the output signals, for the purpose of distinguishing between the resonant and non-resonant signals. The method and apparatus can also distinguish resonant output signals from each other, and non-resonant output signals from each other.
(FR)
L'invention concerne un procédé et un appareil pour déterminer la teneur en analyte d'un échantillon en générant des premier et second signaux d'entrée et en dirigeant les signaux d'entrée sur l'échantillon. Les signaux d'entrée diffèrent en longueur d'onde par au moins 3 nanomètres. L'interaction entre les signaux d'entrée et l'échantillon génère des premier et second signaux de sortie. Chaque signal de sortie comprend un signal résonnant ayant un pic dont la longueur d'onde est sensiblement indépendante de la longueur d'onde du signal d'entrée respectif et un signal de sortie non résonnant ayant un pic dont la longueur d'onde dépend de la longueur d'onde du signal d'entrée respectif. On utilise un détecteur pour détecter les deux signaux de sortie et, en distinguant les signaux de sortie résonnants des signaux de sortie non résonnants, on obtient des données relatives à la teneur en analyte de l'échantillon. On peut appliquer aux signaux de sortie une analyse de régression des composants principaux ou une analyse quantitative multivariable, dans le but de distinguer entre les signaux résonnants et non résonnants. Le procédé et l'appareil décrits ici peuvent également distinguer les signaux de sortie résonnants entre eux, ainsi que les signaux de sortie non résonnants entre eux.
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