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1. WO2007089154 - METHOD AND APPLICATION TO DETERMINE THE AMOUNT OF OIL OR CONDENSATE IN WATER OR IN WATER-BASED SAMPLES WITH THE HELP OF AN EXTRACTIVE AGENT

Publication Number WO/2007/089154
Publication Date 09.08.2007
International Application No. PCT/NO2007/000029
International Filing Date 29.01.2007
IPC
G01N 33/18 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
18Water
G01N 21/35 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
35using infra-red light
CPC
G01N 2021/3595
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 sub-millimetre waves, infrared, visible or ultraviolet 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
35using infra-red light
3595using FTIR
G01N 21/3577
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 sub-millimetre waves, infrared, visible or ultraviolet 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
35using infra-red light
3577for analysing liquids, e.g. polluted water
G01N 33/1833
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
18Water
1826organic contamination in water
1833Oil in water
Applicants
  • MUST AS [NO]/[NO] (AllExceptUS)
  • BRAKSTAD, Frode [NO]/[NO]
Inventors
  • BRAKSTAD, Frode
Common Representative
  • BRAKSTAD, Frode
Priority Data
2006053001.02.2006NO
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPLICATION TO DETERMINE THE AMOUNT OF OIL OR CONDENSATE IN WATER OR IN WATER-BASED SAMPLES WITH THE HELP OF AN EXTRACTIVE AGENT
(FR) PROCÉDÉ ET APPLICATION VISANT À DÉTERMINER LA QUANTITÉ D'HUILE OU DE CONDENSAT DANS DE L'EAU OU DANS DES ÉCHANTILLONS À BASE D'EAU À L'AIDE D'UN AGENT D'EXTRACTION
Abstract
(EN)
This invention consists of a method to use FTIR and a hydrocarbon-based solvent to extract oil and condensate components from water or water-based samples. The extract is concentrated and directly analyzed in the FTIR. Surprisingly enough, this invention has also shown that there exist one or more selective spectral areas ranging from 400 to 4000 cm-1 and which are suited to quantify the amount of oil-/condensate components. Once these have been determined, quantitative routine methods may then be developed. Calibration is carried out by spiking oil and condensate-free water samples, or through the help of an almost similar standard addition on real process samples, or through calibration pursuant to standard methods.
(FR)
L'invention concerne un procédé d'utilisation de spectroscopie par infrarouge à transformée de Fourier et d'un solvant à base d'hydrocarbures pour extraire des composants d'huile et de condensat à partir d'échantillons d'eau ou à base d'eau. L'extrait est concentré et analysé directement par spectroscopie par infrarouge à transformée de Fourier. L'invention a révélé qu'il existe une ou plusieurs zones spectrales s'étalant de 400 à 4000 cm-1, adaptées à quantifier la quantité de composants d'huile/condensat. Après détermination, des procédures quantitatives peuvent être développées. L'étalonnage est réalisé par addition connue d'échantillons d'eau exempts d'huile et de condensat, à l'aide d'une addition standard quasi similaire sur des échantillons réels, ou par étalonnage selon des procédés connus.
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