WO2015044157A1 - Durchflusseinrichtung für ein spektrometersystem und verfahren zum betreiben einer solchen - Google Patents
Durchflusseinrichtung für ein spektrometersystem und verfahren zum betreiben einer solchen Download PDFInfo
- Publication number
- WO2015044157A1 WO2015044157A1 PCT/EP2014/070290 EP2014070290W WO2015044157A1 WO 2015044157 A1 WO2015044157 A1 WO 2015044157A1 EP 2014070290 W EP2014070290 W EP 2014070290W WO 2015044157 A1 WO2015044157 A1 WO 2015044157A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow
- liquid
- distance
- optical element
- measuring gap
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 230000008859 change Effects 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims description 57
- 239000012528 membrane Substances 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 239000000523 sample Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000004941 mixed matrix membrane Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/05—Flow-through cuvettes
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/11—Filling or emptying of cuvettes
-
- 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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/255—Details, e.g. use of specially adapted sources, lighting or optical systems
-
- 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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/11—Filling or emptying of cuvettes
- G01N2021/115—Washing; Purging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/025—Mechanical control of operations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/068—Optics, miscellaneous
Definitions
- the invention relates to a flow-through device for a spectrometer system according to the preamble of patent claim 1 and a method for operating such a flow-through device.
- Spectroscopy is a nondestructive material analysis method that uses light, typically between 1 and 500,000 nm wavelength. Spectroscopy is used primarily for the quantitative determination of known substances, their identification, for process control and monitoring and quality assurance.
- a spectroscopic measurement setup includes a spectrometer for separating and measuring the various light components and a measuring head for optical coupling to the sample. Depending on the measurement method, a light source is also required.
- measurements of the ingredients or properties of liquid samples usually employ either immersion probes or flow cells.
- a flow-through device for a spectrometer system has a first, to a spectrometer op- table couplable optical element and a second, to a
- Light source couplable optical element which are arranged spaced from one another in the region of a measuring gap through which a liquid can flow, wherein in the region of this
- Messspaltes emerging from the second optical element and in the first optical element reaching light beam is at least partially absorbable by the liquid.
- a flow rate of the liquid through the measuring gap can be influenced by changing the distance between the two optical elements.
- the distance of the optical elements can be changed both by moving one of the two or by moving both optical elements.
- the distance of the two optical element is controllable.
- the size of the measurement gap can be controlled during a measurement, so that a best light efficiency can be set from a spectroscopic point of view.
- the flow-through device can in particular also be adapted to inhomogeneities in the sample substance.
- the distance between the two optical elements can be controlled with a micrometer screw or hydraulically. This has the advantage that the distance can be set very accurately and thus the different Properties of different sample liquids in fine gradations can be well taken into account.
- a control device is provided, with which the distance between the two optical elements can be automatically increased or reduced in dependence on a light intensity, which can be measured by a measuring device optically coupled to the first optical element.
- a measuring device optically coupled to the first optical element.
- a by-pass system is part of the flow-through device, by means of which a further liquid as a reference liquid can be introduced into the measuring gap.
- a reference spectrum which is basically required for each position or each distance of the optical elements for the evaluation of data, does not have to be read from a database, but can be measured in each case in situ.
- a new reference spectrum can be recorded for each new position of the optical elements, in which, after a change in the size of the measuring gap, firstly said reference liquid is examined.
- the by-pass system is designed to automatically introduce a cleaning fluid during operation and then, in consequence, to introduce the reference fluid into the measurement gap.
- the reference spectrum can be recorded particularly reliably, because it is ruled out that residues of other liquids falsify the reference spectrum.
- the flow-through device is substantially tubular.
- it may take the form of a capillary.
- the flow-through device can easily be connected to existing superstructures and is easy to clean.
- a pump or the like may possibly be dispensed with. It is here that an adaptation of the size of the measuring gap to sample properties is advantageous, since in this way the respective different properties of different samples with respect to the capillary effect can be taken into account.
- At least one expandable membrane in particular a very extensible and / or deformable membrane, is arranged between the associated optical element and an inner wall region of the flow-through device.
- the membrane deforms in a change in the distance between the two optical elements so that it forms a bottleneck with the optical elements, so the measuring gap.
- the selection of the material from which the membrane is to be produced is free here except for the requirements of ductility and / or ductility and can be chosen to be process-specific, in particular as a polymer membrane or as a mixed-matrix membrane.
- the material of the membrane is preferably selected so that it is able to withstand the liquids to be examined or individual components of these liquids, so in particular by this, as well as by any cleaning agents used, is not chemically attacked.
- This has the advantage that with the membrane a possible collection of solid particles, as they occur in inhomogeneous liquids, can be prevented at the optical elements in the flow device.
- the cleaning of the flow-through device, ie the flow cell, is also considerably simplified by the use of the membrane.
- the membrane seals the system of leaks, on the other hand, it is so stretchable that at the maximum distance of the optical elements a strong
- Measurement gap realized bottleneck in the liquid flow is reduced and the flow of the process liquids remains laminar in a wider range.
- Also part of the invention is a method for operating such a flow device for a spectrometer system, wherein a flow rate of the liquid is influenced by the measuring gap by changing the distance of the two optical elements.
- FIG. 1 shows a schematic representation of an exemplary
- FIG. 2 shows a schematic representation of another exemplary flow-through device in an embodiment of the invention
- FIG. 3 shows a schematic representation of an additional exemplary flow-through device in an embodiment of the invention.
- FIG. 4 shows a schematic representation of the membrane shown in FIG.
- FIG. 1 shows a flow device 1 is shown.
- a liquid 8 flows along a plurality of wall regions 12 and through a measuring gap 6 which is arranged through two optical elements 2, 3 which are arranged at a distance 10 from one another.
- swirling occurs in two regions 9 near the measuring gap.
- the optical elements 2, 3 are movable here parallel to the drawing plane, so that they can be changed in their distance 10.
- the size of the measuring gap 6 is variable, and the amount of liquid 8, which can flow in a predetermined time through the measuring gap 6 is thus changed by a change in the distance 10 of the two optical elements 2, 3.
- the liquid 8 now flows through the measuring gap 6 and at least partially absorbs light which emerges from the second optical element 3. Thus, only a certain proportion of the light emerging from the second optical element 3, which has a reduced spectrum, enters the first optical element 2
- Flow device 1 are used for another liquid 8, so in the measuring gap 6 at the set distance for the preceding liquid 8 may either be too much or too little light absorbed. If too much light is absorbed, that is to say if it is a substantially darker liquid, the distance 10 must be reduced so that it is still possible to draw conclusions about the properties of the liquid 8 from the light reaching the first optical element 2. If, however, it is a very fluid, largely transparent liquid 8, for example, the measuring gap 6 must be increased so that the amount of liquid 8 between the two optical elements 2, 3 is sufficient, for example, to produce a measurable absorption of light. Other properties, such as the viscosity of the liquid 8, can thus be taken into account by adjusting the measuring gap 6.
- FIG. 2 shows a flow-through device 1 in which, very similar to the flow-through device 1 shown in FIG. 1, a liquid 8 flows between wall regions 12 and two optical elements 2, 3 through a measuring gap 6.
- the two regions 9, in which Verwirbe- take place significantly smaller than in the example shown in FIG 1.
- the membranes 11 are fastened between edges of the measuring gap 6 and inner edges of the wall regions 12 of the flow-through device 1.
- the membranes 11 adapt to the changed geometry of the wall regions 12 and the two optical elements 2, 3 due to their flexibility.
- the membrane 11 in the example shown, even less acute angles occur at the corner regions of the wall regions 12 and the optical elements 2, 3. This is the cause of the already mentioned advantageous reduction of the areas 9, in which the liquid 8 swirls.
- FIG. 3 shows a flow-through device 1 in a built-in state in a spectrometer system.
- Two displaceable cylinders 13 receive here the two Optikele- elements 2, 3 and form here a mechanical guide.
- the distance 10 between the two optical elements 2, 3 is adjustable, for example via a micrometer screw.
- a light source 5 for example a halogen lamp or an LED element
- a light beam 7 passes first into the second optical element 3, then into the measuring gap 6, and finally via the first optical element 2 into a spectrometer 4.
- a Liquid 8 are the spectral parts of the light beam 7 absorbed.
- the liquid 8 is in the example shown via two tubes 16, which via the membrane 11 with the
- Measuring gap 6 are connected, passed through the measuring gap 6. If an excessively high or too low brightness is detected in the spectrometer 4, the measuring gap 6 can be adjusted in the example shown by displacing the cylinders 13. If too much light enters the spectrometer 4, the measuring gap 6 will be increased, but if too little light enters the spectrometer 4, the measuring gap 6 will be reduced so as to ensure the best possible measurement result, ie for different sample substances.
- the system can, for example, additionally be equipped with a by-pass system, which is set up in such a way that, after changing the distance 10 of the two optical elements 2, 3, it first automatically ensures that the measuring gap 6 is flushed with a cleaning fluid Follow a reference liquid to introduce into the measuring gap 6, so that the spectrometer 4 can be adjusted or calibrated based on the reference liquid for the now used distance 10. After the adjustment process, the liquid 8 to be analyzed is again introduced into the measuring gap 6 via the two tubes 16.
- a fully automated analysis of a wide variety of substances can be carried out or, for example, carried out. also the process flow can be varied.
- FIG. 4 shows a schematic representation of the membrane 11 used in the example shown in FIG. 3.
- the two openings 15, which in the present case are the larger of the openings 14, 15, are intended to seal the flow-through device 1 in the region of the two optical elements 2, 3 with the associated cylinders 13.
- the two smaller openings 14 accommodate two tubes 16 and thus seal the throughflow device 1 in the direction of the supply and discharge of the liquid 8 to be examined. Since the mem- ran 11 is highly elastic or highly flexible, it can simultaneously adapt to a changed geometry by moving the cylinder 13 with the optical elements 2, 3 and get their sealing function. In addition, edges that can be used to collect residues of the sample or other liquids and substances are avoided constructively by the round shapes used.
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- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SG11201601930QA SG11201601930QA (en) | 2013-09-27 | 2014-09-24 | Flow apparatus for a spectrometer system and method for operating same |
US15/025,483 US20160209321A1 (en) | 2013-09-27 | 2014-09-24 | Flow Apparatus For A Spectrometer System And Method For Operating Same |
CN201480051851.7A CN105556281A (zh) | 2013-09-27 | 2014-09-24 | 用于光谱仪系统的通流设备和用于运行该通流设备的方法 |
EP14781832.2A EP3022545A1 (de) | 2013-09-27 | 2014-09-24 | Durchflusseinrichtung für ein spektrometersystem und verfahren zum betreiben einer solchen |
KR1020167011240A KR20160065918A (ko) | 2013-09-27 | 2014-09-24 | 분광계 시스템용 유동 장치 및 그의 작동 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013219544.3 | 2013-09-27 | ||
DE201310219544 DE102013219544A1 (de) | 2013-09-27 | 2013-09-27 | Durchflusseinrichtung für ein Spektrometersystem und Verfahren zum Betreiben einer solchen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015044157A1 true WO2015044157A1 (de) | 2015-04-02 |
Family
ID=51688030
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/070290 WO2015044157A1 (de) | 2013-09-27 | 2014-09-24 | Durchflusseinrichtung für ein spektrometersystem und verfahren zum betreiben einer solchen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20160209321A1 (de) |
EP (1) | EP3022545A1 (de) |
KR (1) | KR20160065918A (de) |
CN (1) | CN105556281A (de) |
DE (1) | DE102013219544A1 (de) |
SG (1) | SG11201601930QA (de) |
WO (1) | WO2015044157A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110327996B (zh) * | 2019-09-03 | 2019-12-24 | 中国科学院上海高等研究院 | 微流控芯片、微流控系统及红外微流控分析方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0300965A1 (de) * | 1987-07-22 | 1989-01-25 | Ciba-Geigy Ag | Prozessküvette |
WO1998020338A1 (en) * | 1996-11-01 | 1998-05-14 | Foss Electric A/S | A method and flow system for spectrometry and a cuvette for the flow system |
DE102005052752A1 (de) * | 2005-11-04 | 2007-05-10 | Clondiag Chip Technologies Gmbh | Vorrichtung und Verfahren zum Nachweis von molekularen Wechselwirkungen |
US20080252881A1 (en) * | 2007-04-10 | 2008-10-16 | Schlumberger Technology Corporation | High-pressure cross-polar microscopy cells having adjustable fluid passage and methods of use |
DE102009037240A1 (de) * | 2009-08-12 | 2011-02-17 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Bestimmung chemischer und/oder physikalischer Eigenschaften von Betriebsstoffen in einer Maschinenanlage |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1054813A (en) * | 1964-01-16 | 1967-01-11 | Apparatus for the spectral examination of liquids | |
CN85200040U (zh) * | 1985-04-01 | 1985-12-20 | 清华大学 | 池厚连续可调加温高压红外流动池 |
JPS61231435A (ja) * | 1985-04-08 | 1986-10-15 | Hitachi Ltd | フロ−セル |
US5351120A (en) * | 1993-07-12 | 1994-09-27 | American Air Liquide | Spectroscopic cell design |
JP3615438B2 (ja) * | 1999-11-04 | 2005-02-02 | 住江織物株式会社 | 自動調色検定装置及び染液の自動調液システム |
US6974938B1 (en) * | 2000-03-08 | 2005-12-13 | Tibotec Bvba | Microscope having a stable autofocusing apparatus |
US7027147B2 (en) * | 2001-03-19 | 2006-04-11 | E. I. Dupont De Nemours And Company | Method and apparatus for measuring the color properties of fluids |
US6762832B2 (en) * | 2001-07-18 | 2004-07-13 | Air Liquide America, L.P. | Methods and systems for controlling the concentration of a component in a composition with absorption spectroscopy |
ITMI20021192A1 (it) * | 2002-05-31 | 2003-12-01 | Loris Bellini S P A | Macchina di tintura con controllo automatico in linea dell'esaurimento del bagno |
US8303894B2 (en) * | 2005-10-13 | 2012-11-06 | Accuri Cytometers, Inc. | Detection and fluidic system of a flow cytometer |
FR2903775B1 (fr) * | 2006-07-12 | 2009-01-16 | Tethys Instr Soc Par Actions S | Dispositif d'ecoulement d'un fluide et appareillage de mesure optique utilisant un tel dispositif. |
-
2013
- 2013-09-27 DE DE201310219544 patent/DE102013219544A1/de not_active Withdrawn
-
2014
- 2014-09-24 CN CN201480051851.7A patent/CN105556281A/zh active Pending
- 2014-09-24 SG SG11201601930QA patent/SG11201601930QA/en unknown
- 2014-09-24 US US15/025,483 patent/US20160209321A1/en not_active Abandoned
- 2014-09-24 KR KR1020167011240A patent/KR20160065918A/ko not_active Application Discontinuation
- 2014-09-24 EP EP14781832.2A patent/EP3022545A1/de not_active Withdrawn
- 2014-09-24 WO PCT/EP2014/070290 patent/WO2015044157A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0300965A1 (de) * | 1987-07-22 | 1989-01-25 | Ciba-Geigy Ag | Prozessküvette |
WO1998020338A1 (en) * | 1996-11-01 | 1998-05-14 | Foss Electric A/S | A method and flow system for spectrometry and a cuvette for the flow system |
DE102005052752A1 (de) * | 2005-11-04 | 2007-05-10 | Clondiag Chip Technologies Gmbh | Vorrichtung und Verfahren zum Nachweis von molekularen Wechselwirkungen |
US20080252881A1 (en) * | 2007-04-10 | 2008-10-16 | Schlumberger Technology Corporation | High-pressure cross-polar microscopy cells having adjustable fluid passage and methods of use |
DE102009037240A1 (de) * | 2009-08-12 | 2011-02-17 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Bestimmung chemischer und/oder physikalischer Eigenschaften von Betriebsstoffen in einer Maschinenanlage |
Also Published As
Publication number | Publication date |
---|---|
EP3022545A1 (de) | 2016-05-25 |
DE102013219544A1 (de) | 2015-04-02 |
US20160209321A1 (en) | 2016-07-21 |
KR20160065918A (ko) | 2016-06-09 |
CN105556281A (zh) | 2016-05-04 |
SG11201601930QA (en) | 2016-04-28 |
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