WO1997000437A1 - Optische sonde mit sensor aus einem optischen polymeren - Google Patents
Optische sonde mit sensor aus einem optischen polymeren Download PDFInfo
- Publication number
- WO1997000437A1 WO1997000437A1 PCT/EP1996/002550 EP9602550W WO9700437A1 WO 1997000437 A1 WO1997000437 A1 WO 1997000437A1 EP 9602550 W EP9602550 W EP 9602550W WO 9700437 A1 WO9700437 A1 WO 9700437A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical
- sensor
- fiber
- spectrometer according
- polymer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
Definitions
- the invention relates to an ATR spectrometer containing an optical probe, and to a method for analyzing liquid media, optionally containing a solid, according to the preamble of claim 9.
- ATR Attenuated Total Reflection
- the light With each reflection at the interface, the light enters the medium as a so-called damped wave and interacts with its molecules, with some being absorbed and the rest being scattered back into the sensor.
- the light beam in the probe now shows a deficit in the excitation energy of certain molecules and can therefore be analyzed with a spectrometer and used to identify these molecules.
- ATR spectroscopy In contrast to conventional transmission spectroscopy, which shines through glass cuvettes a few mm thick, ATR spectroscopy only measures in a very thin layer around the probe. The thickness of this layer is a function of the wavelength, the refractive indices, the angle of incidence and the polarization. It is of the order of a wavelength of the absorbed light.
- EP 221 01 1 describes a method which allows the measurement of highly concentrated dye solutions and dispersions using ATR spectroscopy.
- highly refractive glasses such as heavy flint glass, aluminum oxide (sapphire), diamond, strontium titanate, titanium oxide, zirconium oxide and quartz glass, the materials for the sensors in question are mentioned. The good measurement results with sapphire prisms are particularly emphasized.
- Probes with sensors made of these materials have the disadvantages that they are comparatively expensive and rigid and - depending on the material and construction - can easily break.
- the invention seeks to remedy this.
- the senor contains an optical polymer or a mixture of different optical polymers.
- the invention thus relates to an ATR spectrometer containing an optical probe with a sensor made of transparent material and a feed line and a discharge line for light, characterized in that the sensor contains an optical polymer or a mixture of different optical polymers.
- the spectrometer according to the invention is outstandingly suitable for methods for analyzing liquid media, possibly containing a solid, in particular dye solutions.
- the spectrometer is also particularly suitable for the analysis of blood, since the sensor can be used sterilized and disposed of after use without major financial loss.
- the optical (translucent) polymer can be present as an essentially pure substance, but it can also be a mixture of different optical polymers.
- Transparent polymers such as polymethyl methacrylate, polycarbonates, polystyrenes, polyolefins, polyesters, polysulfones, polyether sulfones, polyetherimides, polyarylates, polyamides, polyester carbonates, copolymers such as, for example, methyl methacrylate and methacrylic acid-pentafluoro-n-propyl ester, and polymer blends of polymethyl methylene fluoride / poly are suitable as polymers.
- Polymethyl methacrylate is preferably used.
- the senor is in the form of a fiber, which can simultaneously serve as a light guide for the supply and removal of the light and as a sensor, the sensor also being able to be composed of several fibers.
- a protective cover and any cladding that may be present should be removed at the points on the fiber that are to act as sensors.
- “Cladding” means a chemical modification of the polymer surface (eg fluorination) or the application of another polymer that is supposed to protect the fiber. They are removed by detaching them with suitable solvents such as ethyl acetate or petroleum ether.
- Preferred fiber diameters are between 0.2 and 10 mm, preferably between 0.5 and 5 mm.
- the number of reflections of the light in the fiber can be set.
- the sensor can be adapted to the concentration range of the solution to be examined.
- the sensor is extremely flexible due to the material used and the fiber shape and, for example, wound in a spiral shape, can also be used in relatively small measuring cells of relatively long length.
- the lead and the lead for the light can be part of the fiber.
- the fiber shape also opens up the possibility of connecting the sensor to another fiber, preferably a glass fiber, as a result of which the light can be transported almost without loss over long distances.
- the connection can be designed as a plug connection and connect fibers with different diameters. FSMA plugs are preferably used for this purpose.
- a special embodiment of the probe according to the invention is characterized in that the fiber is mirrored at one end and that the lead and the lead for the light are arranged at the other end.
- a glass fiber can also be melted into the polymer fiber.
- the fiber shape also allows the probe to be placed in a flow cell.
- the probe according to the invention also has the surprising property that if the sensor is in the form of a fiber or a straight or curved rod, the light can be analyzed in an angular range from 0 to 401 1, in particular from 5 to 351 to the axis of the fiber, without any disadvantages or the staff can lead.
- Usual UV / VIS / NIR spectrometers are suitable as spectrometers, which can be designed, for example, as grating spectrometers, diode array spectrometers or a CCD spectrometer (Charged Compled Derile).
- the spectrometer according to the invention can also be combined as desired with individual or more features from the embodiments or from claims 2 to 8.
- the probe with the optical polymer itself can also be an invention.
- Embodiments of the method according to the invention can also be found in claims 9 to 16.
- the probe of the spectrometer according to the invention has the main advantages that it is inexpensive and extremely flexible, that it can be adapted to the concentration range of the solution to be examined, which closes the gap in the measurable concentrations between conventional transmission spectroscopy and the previous ATR spectroscopy .
- the probe of the spectrometer according to the invention is described in more detail below with reference to the exemplary embodiments shown schematically in FIGS. 1 to 4.
- 2 shows a probe installed in a flow cell
- 3 shows a probe, put together from several polymers
- 4 shows a probe with melted glass fiber, mirrored at one end.
- Fig. 1 shows a rotationally symmetrical probe, consisting essentially of a sensor, which is present as a fiber 1 made of an optical polymer, a feed line 2 and a lead 3 for the light. This is focused by a lens 4 and introduced into the fiber 1 via the feed line 2, it being possible for part of the light to be blocked out by an aperture 5.
- the light can be guided through the fiber in an angular range which is limited by the angles 6 and 7 to the axis 10 of the fiber and which is also determined by the dimensions of the lens 4 and the diaphragm 5 .
- the light enters the lead 3 and is fed by this to a lens 8, which in turn forwards it to the analysis part of the spectrometer, not shown.
- the interaction of the light with the medium to be examined takes place at the light-irradiated interface 9, which forms the fiber with the medium. It can be seen that with an increasing number of light reflections, which in turn is determined by the fiber length and the angular range, the total area 9 increases disproportionately.
- the probe can thus be adapted to a wide concentration range, since both the lower limit and the upper limit of the analyzable concentration range become smaller with increasing length.
- a one-piece probe 1 1 is shown, which is installed in a flow cell 12 by means of plug 14.
- One-piece here means that lead 2, sensor and lead 3 are contained in a fiber made of an optical polymer.
- the fiber In the area of the inlet 2 and outlet 3, the fiber is provided with a protective sheath 13, but not in the area which is in contact with the medium Touch is - and serves as a sensor.
- a sensor fiber 1 is connected to the feed line 2 and the discharge line 3 via two plug connections 15, preferably FSMA plug connections.
- Fig. 4 shows a probe, the sensor 17 is provided at one end with a mirror 16 and into which a glass fiber 18 is melted, which serves as a light supply.
- a probe analogous to FIG. 3 was used to measure the concentration of a black dye in aqueous solution.
- a polymethyl methacrylate light guide was used as the lead (2.3).
- a 4 cm long rod made of polycarbonate was attached in between so that the free distance between the plugs was 2 cm, the rest was needed for the plug connection.
- the spectra of the solution of the black dye in the concentrations 100 g / L, 300 g / L and 500 g / L shown in FIG. 5 were measured with this probe.
- the absorbance is defined here as the negative decimal logarithm of the transmission.
- FIG. 8b shows a probe design analogous to FIG. 3, but with a bent rod made of polycarbonate of 3 mm diameter as a sensor. It was connected to polymethyl methacrylate fibers by FSMA plugs, which served as feed and discharge for the light. The same dye as in Example 1 was examined with such a probe. The spectrum in Fig. 8a shows that the measurable dye concentration with this arrangement was above 1 g / L.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Spectrometry And Color Measurement (AREA)
- Optical Measuring Cells (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9502636A JPH11508038A (ja) | 1995-06-14 | 1996-06-13 | 光学ポリマーから作られたセンサーを有する光学プローブ |
EP96922801A EP0832426A1 (de) | 1995-06-14 | 1996-06-13 | Optische sonde mit sensor aus einem optischen polymeren |
AU63555/96A AU6355596A (en) | 1995-06-14 | 1996-06-13 | Optical probe with sensor made of an optical polymer |
US08/981,197 US5926269A (en) | 1995-06-14 | 1996-06-13 | Optical probe with sensor made of optical polymer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19521628.8 | 1995-06-14 | ||
DE19521628A DE19521628A1 (de) | 1995-06-14 | 1995-06-14 | Optische Sonde mit Sensor aus einem optischen Polymeren |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997000437A1 true WO1997000437A1 (de) | 1997-01-03 |
Family
ID=7764362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/002550 WO1997000437A1 (de) | 1995-06-14 | 1996-06-13 | Optische sonde mit sensor aus einem optischen polymeren |
Country Status (7)
Country | Link |
---|---|
US (1) | US5926269A (de) |
EP (1) | EP0832426A1 (de) |
JP (1) | JPH11508038A (de) |
AU (1) | AU6355596A (de) |
CA (1) | CA2224681A1 (de) |
DE (1) | DE19521628A1 (de) |
WO (1) | WO1997000437A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19805612A1 (de) * | 1998-02-12 | 1999-08-19 | Bayer Ag | Verfahren zur kontrollierten Herstellung oder Modifizierung von polymeren Produkten mittels IR-ATR-Spektroskopie |
DE10030927C1 (de) * | 2000-06-24 | 2002-05-23 | Glukomeditech Ag | Refraktometrisches Verfahren zur langzeitstabilen genauen Messung der Konzentrationen gelöster Stoffe sowie eine miniaturisierbare Vorrichtung zu seiner Durchführung |
US6952603B2 (en) * | 2001-03-16 | 2005-10-04 | Roche Diagnostics Operations, Inc. | Subcutaneous analyte sensor |
DE10208214B4 (de) * | 2002-02-26 | 2004-09-30 | BSH Bosch und Siemens Hausgeräte GmbH | Vorrichtung zur Überprüfung der Belagbildung und wasserführendes Gerät |
US8379207B2 (en) * | 2008-10-15 | 2013-02-19 | Baker Hughes Incorporated | Method and apparatus for estimating a fluid property |
EP2555670B1 (de) * | 2010-04-05 | 2021-11-10 | KAZ Europe SA | Medizinische sonde mit einführungsdetektor und korrespondierendes verfahren |
US20130100450A1 (en) * | 2010-07-22 | 2013-04-25 | Amit Bhatnagar | Apparatus for determining optical density of liquid sample and optical waveguide thereof |
FR2978547B1 (fr) * | 2011-07-29 | 2014-11-28 | Diafir | Capteur a fibre optique a ondes evanescentes |
US9791367B2 (en) | 2013-06-04 | 2017-10-17 | Pims Passive Imaging Medical Systems Ltd | Hybrid fiber optic probe device for attenuated total reflection spectroscopic applications in UV, visible and IR ranges |
BE1022968B1 (nl) | 2015-04-24 | 2016-10-24 | Atlas Copco Airpower Naamloze Vennootschap | Oliesensor voor een compressor. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0221011A2 (de) * | 1985-09-26 | 1987-05-06 | Ciba-Geigy Ag | Analysenverfahren, unter Verwendung der abgeschwächten Totalreflexion |
DE4038354A1 (de) * | 1990-12-01 | 1992-06-11 | Bruker Analytische Messtechnik | Atr-messsonde |
WO1993020240A1 (en) * | 1992-04-06 | 1993-10-14 | Abbott Laboratories | Method and device for detection of nucleic acid or analyte using total internal reflectance |
WO1994028395A1 (en) * | 1993-06-02 | 1994-12-08 | Hoechst Aktiengesellschaft | Optical sensor for detection of chemical species |
US5396325A (en) * | 1993-02-22 | 1995-03-07 | The Mercury Iron & Steel Co. | Optical sensor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0206433B1 (de) * | 1985-06-25 | 1993-05-05 | The Dow Chemical Company | Verfahren zur Messung des Lichtabsorptionsvermögens eines Flüssigkeitsmediums |
DE4038054A1 (de) * | 1990-11-29 | 1992-06-04 | Man Technologie Gmbh | Verfahren und vorrichtung zur selektiven katalytischen no(pfeil abwaerts)x(pfeil abwaerts)-reduktion in sauerstoffhaltigen abgasen |
US5170056A (en) * | 1991-02-28 | 1992-12-08 | Galileo Electro-Optics Corporation | Optical fiber coupled devices for remote spectroscopy in the infrared |
DE4214594C2 (de) * | 1992-05-03 | 1994-07-07 | Roland Dr Ing Emmrich | Verfahren zur Herstellung eines Sensors, der die Erzeugung geometrisch sehr genau abgegrenzter elektrischer Felder erlaubt, und Sensor |
-
1995
- 1995-06-14 DE DE19521628A patent/DE19521628A1/de not_active Withdrawn
-
1996
- 1996-06-13 CA CA002224681A patent/CA2224681A1/en not_active Abandoned
- 1996-06-13 EP EP96922801A patent/EP0832426A1/de not_active Withdrawn
- 1996-06-13 AU AU63555/96A patent/AU6355596A/en not_active Abandoned
- 1996-06-13 WO PCT/EP1996/002550 patent/WO1997000437A1/de not_active Application Discontinuation
- 1996-06-13 US US08/981,197 patent/US5926269A/en not_active Expired - Fee Related
- 1996-06-13 JP JP9502636A patent/JPH11508038A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0221011A2 (de) * | 1985-09-26 | 1987-05-06 | Ciba-Geigy Ag | Analysenverfahren, unter Verwendung der abgeschwächten Totalreflexion |
DE4038354A1 (de) * | 1990-12-01 | 1992-06-11 | Bruker Analytische Messtechnik | Atr-messsonde |
WO1993020240A1 (en) * | 1992-04-06 | 1993-10-14 | Abbott Laboratories | Method and device for detection of nucleic acid or analyte using total internal reflectance |
US5396325A (en) * | 1993-02-22 | 1995-03-07 | The Mercury Iron & Steel Co. | Optical sensor |
WO1994028395A1 (en) * | 1993-06-02 | 1994-12-08 | Hoechst Aktiengesellschaft | Optical sensor for detection of chemical species |
Non-Patent Citations (1)
Title |
---|
KANG S -W ET AL: "DETERMINING THE ABSORPTION COEFFICIENT OF HEMOGLOBIN DERIVATIVES WITH INTEGRATED OPTIC WAVEGUIDE SENSOR", PROCEEDINGS OF THE ANNUAL INTERNATIONAL CONFERENCE OF THE ENGINEERI IN MEDICINE AND BIOLOGY SOCIETY, PARIS, OCT. 29 - NOV. 1, 1992, vol. 14 PART 1, 29 October 1992 (1992-10-29), MORUCCI J P;PLONSEY R; COATRIEUX J L; SWAMY LAXMINATAYAN, pages 171/172, XP004272281 * |
Also Published As
Publication number | Publication date |
---|---|
JPH11508038A (ja) | 1999-07-13 |
DE19521628A1 (de) | 1997-01-09 |
CA2224681A1 (en) | 1997-01-03 |
US5926269A (en) | 1999-07-20 |
EP0832426A1 (de) | 1998-04-01 |
AU6355596A (en) | 1997-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102008056559B4 (de) | Sensoranordnung | |
DE69915851T2 (de) | Optischer sensor mit gestapelten dielektrischen schichten | |
DE69331188T2 (de) | Vorrichtung und verfahren zur molekularen charakterisierung | |
DE69719939T2 (de) | Verfahren und Vorrichtung für Immunotest unter Verwendung von fluoreszensinduzierter Oberflächen-plasmonresonanz | |
DE19856591C2 (de) | Vorrichtung zur spektroskopischen Analyse eines fluiden Mediums mittels abgeschwächter Reflexion | |
AT510765B1 (de) | Vorrichtung zur photometrischen bzw. spektrometrischen untersuchung einer flüssigen probe | |
DE10392315B4 (de) | Optische Konfiguration und Verfahren für differentielle Brechungskoeffizientenmessungen | |
WO2003083458A2 (de) | Infrarotmessvorrichtung, insbesondere für die spektrometrie wässriger systeme, vorzugsweise von mehrkomponentensystemen | |
DE4135021C2 (de) | Optische Messsonde zur Messung der Lichttransmission von Flüssigkeiten | |
DE4223840C2 (de) | Refraktometer | |
WO1997000437A1 (de) | Optische sonde mit sensor aus einem optischen polymeren | |
EP1281062A1 (de) | Plasmonenresonanzsensor | |
WO2003034046A1 (de) | Oberflächenplasmonen-resonanz-sensor | |
DE2937352B1 (de) | Multipass-Anordnung | |
DE3605518A1 (de) | Messzelle fuer die spektrometrie sowie verfahren zum messen der adsorption oder emission einer probe im rohrinnenraum dieser messzelle | |
WO2008025488A1 (de) | Plasmonenresonanzsensor | |
DE69026448T2 (de) | Verbesserung in geschwächter Totalreflektions-Spektroskopie | |
DE4424628A1 (de) | Verfahren und Anordnung zur Brechzahlmessung verschiedener Medien | |
DE202023100328U1 (de) | Ein auf Tamm-Plasmonen-Polariton basierendes Gerät zur Messung von Blutplasma | |
DE102012106867A1 (de) | Vorrichtung und Verfahren zur resonator-verstärkten optischen Absorptionsmessung an Proben mit kleinem Absorptionswirkungsquerschnitt | |
DE102015213147B4 (de) | Verfahren zur Bestimmung und Messkopf zur Erfassung einer Oberflächeneigenschaft genau einer Seite einer lichtdurchlässigen Probe | |
DE19751403A1 (de) | Kombinierte Absorptions- und Reflektanzspektroskopie zur synchronen Ermittlung der Absorption, Fluoreszenz, Streuung und Brechung von Flüssigkeiten, Gasen und Festkörpern | |
DE69207686T2 (de) | Geometrie-Messung der Beschichtungen von optischen Fasern | |
DE19920184A1 (de) | Verfahren für die gleichzeitige Erfassung von diffuser und specularer Reflexion von Proben, insbesondere undurchsichtiger Proben, sowie Reflektanz-Meßsonde | |
DE10002238A1 (de) | Reflektanz-Meßsonde |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AU AZ BB BG BR BY CA CN CZ EE GE HU IS JP KG KP KR KZ LK LR LT LV MD MG MK MN MX NO NZ PL RO RU SG SI SK TJ TM TR TT UA US UZ VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1996922801 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2224681 Country of ref document: CA Ref country code: CA Ref document number: 2224681 Kind code of ref document: A Format of ref document f/p: F Ref country code: JP Ref document number: 1997 502636 Kind code of ref document: A Format of ref document f/p: F |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08981197 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1996922801 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1996922801 Country of ref document: EP |