WO2002095397A1 - Verfahren zur messung des 13co2/12co2-verhältnisses in der atemluft intubierter probanden - Google Patents
Verfahren zur messung des 13co2/12co2-verhältnisses in der atemluft intubierter probanden Download PDFInfo
- Publication number
- WO2002095397A1 WO2002095397A1 PCT/DE2002/001907 DE0201907W WO02095397A1 WO 2002095397 A1 WO2002095397 A1 WO 2002095397A1 DE 0201907 W DE0201907 W DE 0201907W WO 02095397 A1 WO02095397 A1 WO 02095397A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- carbon dioxide
- cooling
- liquid
- effected
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000000241 respiratory effect Effects 0.000 title claims abstract 7
- 238000012360 testing method Methods 0.000 title abstract description 15
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 27
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 claims abstract description 8
- 239000003570 air Substances 0.000 claims description 36
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 239000012080 ambient air Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000003507 refrigerant Substances 0.000 claims description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000003463 adsorbent Substances 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims 4
- 239000007787 solid Substances 0.000 claims 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000001771 impaired effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000004060 metabolic process Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 description 4
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 3
- 229910020366 ClO 4 Inorganic materials 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000004949 mass spectrometry Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000000155 isotopic effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 210000000496 pancreas Anatomy 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 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
- G01N21/17—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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure or temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
-
- 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
- G01N21/59—Transmissivity
- G01N21/61—Non-dispersive gas analysers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Definitions
- the aim of the invention is to remedy this deficiency.
- the essence of the method according to the invention is to separate the carbon dioxide exhaled by the test person by cooling, by sorption or by a combination of cooling and sorption from the exhaled air and then to evaporate, to desublimate or to desorb and to add a gas, the composition of which roughly corresponds to that of normal breathing air.
- this gas should not contain any carbon dioxide before metering in the carbon dioxide exhaled by the test subject and should correspond to the composition of the atmospheric air with regard to the main components.
- the gas After metering in the carbon dioxide exhaled by the test person, the gas should have a carbon dioxide content corresponding to the breathing air (i.e. about 2 to 5% by volume), so that NDIR devices calibrated in the usual way can be used to carry out 13 C breath tests.
- the separation of the carbon dioxide from the breathing air is to be effected by cooling, then Peltier elements, refrigerants or small refrigeration machines can be used, as is expressed in claims 2, 3, 4, 5 and 6. Liquid air or liquid nitrogen is particularly suitable as a refrigerant.
- the separation of the carbon dioxide from the breathing air of intubated patients can also be effected by absorption by means of a liquid. If sodium hydroxide solution or the aqueous solution of another strong base is used for this purpose, the carbon dioxide is released again by adding an equivalent amount or an excess of a strong acid such as hydrochloric acid or sulfuric acid.
- FIGS. 1, 2 and 3 Pipe filled with Mg (ClO 4 ) 2 for drying the aspirated ambient air
- the apparatus shown in FIGS. 1, 2 and 3 in different operating states consists of the shut-off devices 1, 2 and 3, a heat exchanger 4 for cooling to 9 * r the temperature of the liquid nitrogen or for heating to room temperature, an NDIR measuring device 5, a tube 6 filled with Mg (ClO) 2 for drying the breathing air, a tube 7 filled with soda lime for removing the carbon dioxide from the sucked-in ambient air and a tube filled with Mg (ClO) 2 for drying the sucked-in ambient air.
- a heat exchanger 4 for cooling to 9 * r the temperature of the liquid nitrogen or for heating to room temperature
- an NDIR measuring device 5 a tube 6 filled with Mg (ClO) 2 for drying the breathing air
- a tube 7 filled with soda lime for removing the carbon dioxide from the sucked-in ambient air
- Fig. I shows the normal operating state: The air exhaled by the subject is discharged from the shut-off device l into the environment. The heat exchanger 4 is neither cooled nor heated. The measuring device 5 is or is being prepared for the measurement.
- Fig. 2 shows the operating state in which the breath of the subject over the
- IO shut-off device 1 and the tube 6 filled with Mg (ClO) 2 is fed to the heat exchanger 4 cooled with liquid nitrogen and then leaves the apparatus via the shut-off device 3.
- all of the carbon dioxide is extracted from the air by sublimation.
- 3 shows the operating state in which ambient air is supplied to the heat exchanger 4 via the? -75? Blocking element 2, the tube 7 filled with soda lime and the tube 8 charged with Mg (ClO) 2 .
- the heat exchanger 4 is heated to ambient temperature so that the carbon dioxide previously frozen out of the test person's breathing air mixes with the air flow and reaches the NDIR device via the shut-off device 3, in which the 13 CO 2 / I2 CO 2 -
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Hematology (AREA)
- Urology & Nephrology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10292249.7T DE10292249B4 (de) | 2001-05-25 | 2002-05-25 | Verfahren zur Messung des 13CO2/12CO2-Verhältnisses in der Atemluft intubierter Probanden |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10125415.6 | 2001-05-25 | ||
DE10125415A DE10125415A1 (de) | 2001-05-25 | 2001-05-25 | Verfahren zur Messung des 13CO¶2¶/12CO¶2¶-Verhältnisses in der Atemluft intubierter Probanden |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002095397A1 true WO2002095397A1 (de) | 2002-11-28 |
Family
ID=7686037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/001907 WO2002095397A1 (de) | 2001-05-25 | 2002-05-25 | Verfahren zur messung des 13co2/12co2-verhältnisses in der atemluft intubierter probanden |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE10125415A1 (de) |
WO (1) | WO2002095397A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010094414A1 (de) * | 2009-02-19 | 2010-08-26 | Abb Ag | Verfahren und einrichtung zur durchführung von analysen von atemgasproben |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004037623A1 (de) | 2004-08-02 | 2006-03-16 | Spectro Analytical Instruments Gmbh & Co. Kg | Vorrichtung und Verfahren zur spektroskopischen Bestimmung von Kohlenstoff |
IT1391089B1 (it) * | 2008-07-10 | 2011-11-18 | Snam Progetti | Dispositivo di campionamento in linea e metodo per l'analisi delle emissioni di composti volatili in aria |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4298347A (en) * | 1980-02-25 | 1981-11-03 | Kor Incorporated | 13 CO2 Breath test |
US5093269A (en) * | 1986-12-12 | 1992-03-03 | Dragerwerk Aktiengesellschaft | Process and arrangement for determining at least one component of a test gas |
US5284054A (en) * | 1989-09-04 | 1994-02-08 | Ernst Loebach | Method and apparatus for preparing a gas mixture for purposes of analysis and application of the method |
EP0650051A2 (de) * | 1993-10-25 | 1995-04-26 | Kyoto Dai-ichi Kagaku Co., Ltd. | Verfahren zur Sammlung der Ausatmungsluft und automatische Ausatmungsluftsammelvorrichtung |
US5747809A (en) * | 1996-06-11 | 1998-05-05 | Sri International | NDIR apparatus and method for measuring isotopic ratios in gaseous samples |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD137323A1 (de) * | 1978-06-23 | 1979-08-29 | Klaus Wetzel | Verfahren zur bestimmung des relativen c-13-gehalts der atemluft |
KR100415336B1 (ko) * | 1995-10-09 | 2004-01-16 | 오쓰까 세이야꾸 가부시키가이샤 | 호흡 공기 샘플링 백 및 기체 측정 장치 |
DE19755471A1 (de) * | 1997-12-03 | 1999-06-17 | Ufz Leipzighalle Gmbh | Vorrichtung zur Untersuchung von Atemwegserkrankungen und diagnostische Mittel |
-
2001
- 2001-05-25 DE DE10125415A patent/DE10125415A1/de not_active Withdrawn
-
2002
- 2002-05-25 WO PCT/DE2002/001907 patent/WO2002095397A1/de not_active Application Discontinuation
- 2002-05-25 DE DE10292249.7T patent/DE10292249B4/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4298347A (en) * | 1980-02-25 | 1981-11-03 | Kor Incorporated | 13 CO2 Breath test |
US5093269A (en) * | 1986-12-12 | 1992-03-03 | Dragerwerk Aktiengesellschaft | Process and arrangement for determining at least one component of a test gas |
US5284054A (en) * | 1989-09-04 | 1994-02-08 | Ernst Loebach | Method and apparatus for preparing a gas mixture for purposes of analysis and application of the method |
EP0650051A2 (de) * | 1993-10-25 | 1995-04-26 | Kyoto Dai-ichi Kagaku Co., Ltd. | Verfahren zur Sammlung der Ausatmungsluft und automatische Ausatmungsluftsammelvorrichtung |
US5747809A (en) * | 1996-06-11 | 1998-05-05 | Sri International | NDIR apparatus and method for measuring isotopic ratios in gaseous samples |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010094414A1 (de) * | 2009-02-19 | 2010-08-26 | Abb Ag | Verfahren und einrichtung zur durchführung von analysen von atemgasproben |
Also Published As
Publication number | Publication date |
---|---|
DE10292249B4 (de) | 2015-10-29 |
DE10292249D2 (de) | 2004-04-29 |
DE10125415A1 (de) | 2002-11-28 |
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