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1. (WO2001004612) A METHOD OF DETERMINING THE CONTENT OF A COMPONENT IN A FLUID SAMPLE AND AN APPARATUS THEREFOR
PCT Biblio. Data
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Pub. No.:
WO/2001/004612
International Application No.:
PCT/DK2000/000370
Publication Date:
18.01.2001
International Filing Date:
06.07.2000
IPC:
G01N 21/3577
(2014.01),
G01N 21/359
(2014.01),
G01N 33/06
(2006.01)
[IPC code unknown for G01N 21/3577][IPC code unknown for G01N 21/359]
G
PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33
Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
02
Food
04
Dairy products
06
Determining fat content, e.g. by butyrometer
Applicants:
FOSS ELECTRIC A/S
[DK/DK]; Slangerupgade 69, P.O. Box 260, DK-3400 Hillerød (DK)
(For All Designated States Except US)
.
JUHL, Henrik, Vilstrup
[DK/DK]; (DK)
(For US Only)
Inventors:
JUHL, Henrik, Vilstrup
; (DK)
Agent:
LARSEN, Anna
; Foss Electric A/S, P.O. Box 260, DK-3400 Hillerød (DK)
Priority Data:
PA 1999 00998
09.07.1999
DK
Title
(EN)
A METHOD OF DETERMINING THE CONTENT OF A COMPONENT IN A FLUID SAMPLE AND AN APPARATUS THEREFOR
(FR)
PROCEDE DETERMINANT LE CONTENU D'UN COMPOSANT DANS UN ECHANTILLON DE FLUIDE ET APPAREIL A CET EFFET
Abstract:
(EN)
A method of quantitative determining the content or concentration of a component in a fluid sample by IR analysis, the method comprising the following steps: a) directing one or more IR light beams through each of a number, n, of different parts of a fluid sample, the IR light including at least one wavelength within a waveband which the component absorbs, b) for each of the n parts of the sample, detecting the IR light having passed through the respective part of the sample, c) obtaining, for each of the parts, at least one value on the basis of the detected IR light, the value representing information from which the content or concentration may be estimated, d) calculating at least two statistical parameters, such as statistical moments, eg. a mean value and a standard deviation, characteristic of a statistical distribution of the obtained values, and e) estimating or determining the content or concentration of the component on the basis of the at least two statistical parameters. Thereby the content may be determined fairly accurate even through the instrument is simple and the measured sample is not homogenised. The obtained accuracy depends on the number of repetitive measurements on each sample. A better accuracy may be obtained by increasing the number of measurements.
(FR)
L'invention concerne un procédé servant à déterminer le contenu ou la concentration quantitative d'un composant dans un échantillon de fluide par analyse IR. Ce procédé consiste : a) à diriger un ou plusieurs faisceaux de lumière IR à travers un nombre n de différentes parties d'un échantillon de fluide, la lumière IR comprenant au moins une longueur d'onde à l'intérieur d'une gamme d'ondes que le composant absorbe, b) pour chacune des parties n de l'échantillon, à détecter la lumière IR ayant passé à travers la partie respective de l'échantillon, c) à obtenir, pour chacune des parties, au moins une valeur sur la base de la lumière IR détectée, la valeur représentant les informations au moyen desquelles le contenu ou la concentration peut être estimé, d) à calculer au moins deux paramètres statistiques, tels que des moments statistiques, à savoir une valeur moyenne et un écart standard, caractéristique de la répartition statistique des valeurs obtenues et e) à estimer ou à déterminer le contenu ou la concentration du composant sur la base d'au moins deux paramètres statistiques. Ainsi, le contenu peut être déterminer de manière assez précise même si l'instrument est simple et l'échantillon mesuré n'est pas homogénéisé. Cette précision dépend du nombre de mesures effectuées sur chaque échantillon. Un plus grande précision peut être obtenue en augmentant le nombre de mesures.
Designated States:
AE, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CR, CU, CZ, DE, DK, DM, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, US, UZ, VN, YU, ZA, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)