Processing

Please wait...

PATENTSCOPE will be unavailable a few hours for maintenance reason on Saturday 31.10.2020 at 7:00 AM CET
Settings

Settings

Goto Application

1. WO2016139386 - A METHOD FOR MEASURING THE PRESENCE OF AN IMPURITY SUBSTANCE IN A LIQUID SAMPLE AND A DEVICE FOR THE SAME

Publication Number WO/2016/139386
Publication Date 09.09.2016
International Application No. PCT/FI2015/050141
International Filing Date 05.03.2015
IPC
G01N 21/78 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
75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
77by observing the effect on a chemical indicator
78producing a change of colour
CPC
G01N 2001/4027
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
1Sampling; Preparing specimens for investigation
28Preparing specimens for investigation ; including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
40Concentrating samples
4022by thermal techniques; Phase changes
4027evaporation leaving a concentrated sample
G01N 21/274
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
27using photo-electric detection
274Calibration, base line adjustment, drift correction
G01N 21/6402
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
6402Atomic fluorescence; Laser induced fluorescence
G01N 21/65
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
65Raman scattering
Applicants
  • TTY-SÄÄTIÖ [FI]/[FI]
Inventors
  • JÄRVINEN, Samu
  • TOIVONEN, Juha
  • SAARI, Sampo
  • KESKINEN, Jorma
Agents
  • BERGGREN OY
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD FOR MEASURING THE PRESENCE OF AN IMPURITY SUBSTANCE IN A LIQUID SAMPLE AND A DEVICE FOR THE SAME
(FR) PROCÉDÉ PERMETTANT DE MESURER LA PRÉSENCE D'UNE SUBSTANCE IMPURE DANS UN ÉCHANTILLON LIQUIDE ET UN DISPOSITIF POUR CE DERNIER
Abstract
(EN)
The invention relates to a method for measuring the presence of an impurity substance in a liquid sample by laser induced breakdown spectroscopy (LIBS). The method comprises: forming a droplet (210) from said liquid sample (200) using a droplet generator (110); levitating the droplet in a space in an electric field in such a way that it dries to a particle; controlling the measuring process with a control unit (350) using optical scattering or reflection measurements from an optical detector (140) with light from a laser (130); generating a laser pulse with a laser (150) in such a way that the laser pulse breaks down the particle, the constituents of the broken particle emitting a spectrum of radiation specific to the composition of the particle; detecting with a spectrometer (160) at least a part of the spectrum of radiation specific to the composition of the particle; and determining with a processing unit (199), using the detected part of the spectrum of radiation specific to the composition of the particle, the presence of at least one impurity substance in the liquid sample. In addition, a device for performing the method.
(FR)
L'invention se rapporte à un procédé permettant de mesurer la présence d'une substance impure dans un échantillon liquide par spectroscopie par claquage induit par éclair laser (LIBS pour Laser Induced Breakdown Spectroscopy). Le procédé consiste à : former une gouttelette (210) à partir dudit échantillon liquide (200) à l'aide d'un générateur de gouttelettes (110); soulever par lévitation la gouttelette dans un espace dans un champ électrique de telle manière qu'elle sèche en se transformant en particule; commander le processus de mesure avec une unité de commande (350) en utilisant des mesures de dispersion ou de réflexion optique provenant d'un détecteur optique (140) avec la lumière provenant d'un laser (130); générer une impulsion laser avec un laser (150) de telle sorte que l'impulsion laser décompose la particule, les constituants de la particule décomposée émettant un spectre de rayonnement spécifique à la composition de la particule; détecter au moyen d'un spectromètre (160) au moins une partie du spectre de rayonnement spécifique à la composition de la particule; et déterminer avec une unité de traitement (199), à l'aide de la partie détectée du spectre de rayonnement spécifique à la composition de la particule, la présence d'au moins une substance impure dans l'échantillon liquide. De plus, l'invention concerne un dispositif permettant de réaliser le procédé.
Latest bibliographic data on file with the International Bureau