CA2088100A1 - Methods and apparatus for isotopic analysis - Google Patents

Methods and apparatus for isotopic analysis

Info

Publication number
CA2088100A1
CA2088100A1 CA2088100A CA2088100A CA2088100A1 CA 2088100 A1 CA2088100 A1 CA 2088100A1 CA 2088100 A CA2088100 A CA 2088100A CA 2088100 A CA2088100 A CA 2088100A CA 2088100 A1 CA2088100 A1 CA 2088100A1
Authority
CA
Canada
Prior art keywords
isotope
light
bearing species
analyte
methods
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2088100A
Other languages
French (fr)
Other versions
CA2088100C (en
Inventor
Daniel E. Murnick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rutgers State University of New Jersey
Original Assignee
Rutgers State University of New Jersey
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rutgers State University of New Jersey filed Critical Rutgers State University of New Jersey
Publication of CA2088100A1 publication Critical patent/CA2088100A1/en
Application granted granted Critical
Publication of CA2088100C publication Critical patent/CA2088100C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
    • G01N27/628—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas and a beam of energy, e.g. laser enhanced ionisation
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/622—Ion mobility spectrometry
    • G01N27/623—Ion mobility spectrometry combined with mass spectrometry
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
    • G01N21/68—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence using high frequency electric fields
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/13—Tracers or tags
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T436/00—Chemistry: analytical and immunological testing
    • Y10T436/20—Oxygen containing
    • Y10T436/204998—Inorganic carbon compounds

Abstract

The isotopic composition of a multiatomic isotope-bearing species such as CO2 in an analyte is measured by maintaining the analyte in a condition such that isotope-bearing species are present in an excited state and directing light at wavelengths corresponding to transition energies of isotope-bearing species with different isotopes. The interaction between the analyte and light at the different wavelengths is monitored, as by monitoring the optogalvanic effect caused by the light of the different wavelengths. The light may be supplied by a laser (10) including the isotope-bearing species. A stable isotope such as <1><3>C or <1><8>O can be used as a tracer in a chemical or biological test and detected using the composition-determining method. <IMAGE>
CA002088100A 1992-02-03 1993-01-26 Methods and apparatus for isotopic analysis Expired - Fee Related CA2088100C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/829,416 1992-02-03
US07/829,416 US5394236A (en) 1992-02-03 1992-02-03 Methods and apparatus for isotopic analysis

Publications (2)

Publication Number Publication Date
CA2088100A1 true CA2088100A1 (en) 1993-08-04
CA2088100C CA2088100C (en) 1997-11-25

Family

ID=25254486

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002088100A Expired - Fee Related CA2088100C (en) 1992-02-03 1993-01-26 Methods and apparatus for isotopic analysis

Country Status (10)

Country Link
US (3) US5394236A (en)
EP (1) EP0556614B1 (en)
JP (1) JP3338497B2 (en)
KR (1) KR970007066B1 (en)
CN (1) CN1043685C (en)
AT (1) ATE224538T1 (en)
AU (1) AU659905B2 (en)
CA (1) CA2088100C (en)
DE (1) DE69332297T2 (en)
TW (1) TW254850B (en)

Families Citing this family (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394236A (en) * 1992-02-03 1995-02-28 Rutgers, The State University Methods and apparatus for isotopic analysis
US5412467A (en) * 1993-03-24 1995-05-02 Praxair Technology, Inc. Gas emission spectrometer and method
US5900533A (en) * 1995-08-03 1999-05-04 Trw Inc. System and method for isotope ratio analysis and gas detection by photoacoustics
WO1997026827A1 (en) * 1996-01-26 1997-07-31 Battelle Memorial Institute Optical non-radioactive breath analysis
US5818580A (en) * 1996-03-12 1998-10-06 Rutgers, The State University Simultaneous multisample analysis and apparatus therefor
US5706082A (en) * 1996-05-14 1998-01-06 Alimenterics Inc. Optogalvanic spectroscopy with phase independent detection
US5747809A (en) * 1996-06-11 1998-05-05 Sri International NDIR apparatus and method for measuring isotopic ratios in gaseous samples
US5944670A (en) * 1996-12-02 1999-08-31 Oridion Medical Ltd. Breath test for the diagnosis of bacterial infection
US6186958B1 (en) 1997-02-26 2001-02-13 Oridion Medical Breath test analyzer
IL121793A (en) * 1997-09-17 2008-06-05 Lewis Coleman Isotopic gas analyzer
US5910403A (en) * 1997-05-15 1999-06-08 The Regents Of University Of California Methods for measuring cellular proliferation and destruction rates in vitro and in vivo
WO1999012471A2 (en) 1997-09-11 1999-03-18 Oridion Medical Ltd. Breath test analyser
USRE38728E1 (en) * 1997-09-11 2005-04-19 Oridion Medical, LTD Breath test analyzer
US6284219B1 (en) 1998-06-30 2001-09-04 Phenome Sciences Inc. In vivo determination of metabolic function for use in therapy management
AT408376B (en) * 1999-04-07 2001-11-26 Lendl Bernhard Dr METHOD FOR INFRARED-OPTICALLY DETERMINING THE CONCENTRATION OF AT LEAST ONE ANALYTIC IN A LIQUID SAMPLE
US6656127B1 (en) * 1999-06-08 2003-12-02 Oridion Breathid Ltd. Breath test apparatus and methods
JP2003524149A (en) * 1999-06-08 2003-08-12 オリディオン ブレシド リミティド Gas analyzer verification test equipment
US6179691B1 (en) * 1999-08-06 2001-01-30 Taiwan Semiconductor Manufacturing Company Method for endpoint detection for copper CMP
US6800855B1 (en) * 1999-12-27 2004-10-05 Nippon Sanso Corporation Spectroscopic method for analyzing isotopes by using a semiconductor laser
US6609068B2 (en) 2000-02-22 2003-08-19 Dow Global Technologies Inc. Personal computer breath analyzer for health-related behavior modification and method
JP2004508534A (en) * 2000-02-22 2004-03-18 ダウ　グローバル　テクノロジーズ　インコーポレイティド Personal computer breath analyzer for health related behavior modification and its method
US7004909B1 (en) * 2001-03-19 2006-02-28 Pranalytica, Inc. Diagnostic method for high sensitivity detection of component concentrations in human gas emissions
US7001587B2 (en) * 2001-10-24 2006-02-21 The Regents Of The University Of California Measurement of protein synthesis rates in humans and experimental systems by use of isotopically labeled water
CA2475924C (en) * 2002-02-12 2016-03-29 The Regents Of The University Of California Non-invasive method for measuring rates of biosynthesis of biological molecules by label incorporation
US6888127B2 (en) * 2002-02-26 2005-05-03 Halliburton Energy Services, Inc. Method and apparatus for performing rapid isotopic analysis via laser spectroscopy
IL148468A (en) 2002-03-03 2012-12-31 Exalenz Bioscience Ltd Breath collection system
AU2003234688A1 (en) * 2002-04-05 2003-10-27 The Regents Of The University Of California Method for isolating and measuring proliferation of long-term label retaining cells and stem cells
WO2004011426A2 (en) * 2002-07-30 2004-02-05 The Regents Of The University Of California Method for automated, large-scale measurement of the molecular flux rates of the proteome or the organeome using mass spectrometry
WO2004021863A2 (en) * 2002-09-04 2004-03-18 The Regents Of The University Of California Methods for measuring rates of replication and death of nfectious microbial agents in an infected host organism
DK1546373T3 (en) * 2002-09-13 2009-03-30 Univ California Methods for measuring rates of reverse cholesterol transport in vivo as an index of antiatherogenesis
US20070248540A1 (en) * 2002-09-16 2007-10-25 The Regents Of The University Of California Biochemical methods for measuring metabolic fitness of tissues or whole organisms
SG152923A1 (en) * 2002-09-16 2009-06-29 Univ California Biochemical methods for measuring metabolic fitness of tissues or whole organisms
SG152922A1 (en) 2002-11-04 2009-06-29 Univ California Deuterated glucose or fat tolerance tests for high-throughput measurement of the metabolism of sugars or fatty acids in the body
US9682425B2 (en) 2009-12-08 2017-06-20 Baker Hughes Incorporated Coated metallic powder and method of making the same
US7262020B2 (en) * 2003-07-03 2007-08-28 The Regents Of The University Of California Methods for comparing relative flux rates of two or more biological molecules in vivo through a single protocol
US20050202406A1 (en) 2003-11-25 2005-09-15 The Regents Of The University Of California Method for high-throughput screening of compounds and combinations of compounds for discovery and quantification of actions, particularly unanticipated therapeutic or toxic actions, in biological systems
CA2553223A1 (en) * 2004-01-15 2005-08-04 Cedars-Sinai Medical Center System and method for expression proteomics based on isotope ratio modification
TW200538738A (en) 2004-02-20 2005-12-01 Univ California Molecular flux rates through critical pathways measured by stable isotope labeling in vivo, as biomarkers of drug action and disease activity
AU2005222430A1 (en) * 2004-03-11 2005-09-22 The Regents Of University Of California Temporal or spatial characterization of biosynthetic events in living organisms by isotopic fingerprinting under conditions of imposed isotopic gradients
US20050238577A1 (en) * 2004-03-29 2005-10-27 The Regents Of The University Of California Isolation of epithelial cells or their biochemical contents from excreta after in vivo isotopic labeling
US7251037B2 (en) * 2005-03-07 2007-07-31 Caleb Brett Usa, Inc. Method to reduce background noise in a spectrum
US20060251576A1 (en) * 2005-05-03 2006-11-09 The Regents Of The University Of California Methods for measuring cholesterol metabolism and transport
TW200711660A (en) 2005-06-10 2007-04-01 Univ California Monitoring two dimensions of diabetes pathogenesis separately or concurrently (insulin sensitivity and beta-cell sufficiency): uses in diagnosis, prognosis, assessment of disease risk, and drug development
EP1887342A1 (en) * 2006-08-11 2008-02-13 Geoservices Device for quantifiying the relative contents of two isotopes of at least one specific gaseous constituent contained in a gaseous sample from a fluid related assembly and process.
US7616305B2 (en) * 2006-11-30 2009-11-10 Rutgers, The State University Analytical methods and apparatus
WO2009108687A2 (en) * 2008-02-25 2009-09-03 University Of Utah Research Foundation Device and system to reconstruct travel history of an individual
US8178355B2 (en) * 2008-09-15 2012-05-15 Platypus Technologies, Llc. Detection of vapor phase compounds by changes in physical properties of a liquid crystal
KR101068996B1 (en) * 2008-09-18 2011-09-30 한국표준과학연구원 A method for verification of animal age based on stable isotopic ratio measurement
JP5587344B2 (en) * 2009-02-02 2014-09-10 プラネタリー・エミッションズ・マネージメント System for monitoring greenhouse gas flux
US10240419B2 (en) 2009-12-08 2019-03-26 Baker Hughes, A Ge Company, Llc Downhole flow inhibition tool and method of unplugging a seat
US9110008B2 (en) * 2010-07-26 2015-08-18 Los Gatos Research Method for isotopic analysis of water in bodily fluids
TWI393892B (en) * 2010-09-20 2013-04-21 Univ Nat Formosa Detection method of electro - optical signal and its detection system
US8945936B2 (en) 2011-04-06 2015-02-03 Fresenius Medical Care Holdings, Inc. Measuring chemical properties of a sample fluid in dialysis systems
US8631876B2 (en) 2011-04-28 2014-01-21 Baker Hughes Incorporated Method of making and using a functionally gradient composite tool
CA2867844A1 (en) * 2011-05-26 2012-11-29 Southwest Sciences Incorporated Laser based, temperature insensitive, carbon dioxide isotope ratio measurement
US9139928B2 (en) 2011-06-17 2015-09-22 Baker Hughes Incorporated Corrodible downhole article and method of removing the article from downhole environment
US9707739B2 (en) 2011-07-22 2017-07-18 Baker Hughes Incorporated Intermetallic metallic composite, method of manufacture thereof and articles comprising the same
US9643250B2 (en) 2011-07-29 2017-05-09 Baker Hughes Incorporated Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle
US9833838B2 (en) 2011-07-29 2017-12-05 Baker Hughes, A Ge Company, Llc Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle
US9033055B2 (en) 2011-08-17 2015-05-19 Baker Hughes Incorporated Selectively degradable passage restriction and method
US9090956B2 (en) 2011-08-30 2015-07-28 Baker Hughes Incorporated Aluminum alloy powder metal compact
US9109269B2 (en) 2011-08-30 2015-08-18 Baker Hughes Incorporated Magnesium alloy powder metal compact
US9856547B2 (en) 2011-08-30 2018-01-02 Bakers Hughes, A Ge Company, Llc Nanostructured powder metal compact
US9643144B2 (en) 2011-09-02 2017-05-09 Baker Hughes Incorporated Method to generate and disperse nanostructures in a composite material
WO2013036885A1 (en) 2011-09-08 2013-03-14 The Regents Of The University Of California Metabolic flux measurement, imaging and microscopy
US20140353486A1 (en) 2011-12-07 2014-12-04 Glaxosmithkline Llc Methods for determining total body skeletal muscle mass
CN102512207A (en) * 2011-12-13 2012-06-27 苏州生物医学工程技术研究所 B-ultrasonic probe type photoacoustic imaging mammary gland scanner and scanning method thereof
US9010416B2 (en) 2012-01-25 2015-04-21 Baker Hughes Incorporated Tubular anchoring system and a seat for use in the same
US9605508B2 (en) 2012-05-08 2017-03-28 Baker Hughes Incorporated Disintegrable and conformable metallic seal, and method of making the same
US9134319B2 (en) 2013-03-15 2015-09-15 The Regents Of The University Of California Method for replacing biomarkers of protein kinetics from tissue samples by biomarkers of protein kinetics from body fluids after isotopic labeling in vivo
US9816339B2 (en) 2013-09-03 2017-11-14 Baker Hughes, A Ge Company, Llc Plug reception assembly and method of reducing restriction in a borehole
WO2015122475A1 (en) * 2014-02-12 2015-08-20 積水メディカル株式会社 Carbon isotope analysis device and carbon isotope analysis method
CA2936851A1 (en) 2014-02-21 2015-08-27 Terves, Inc. Fluid activated disintegrating metal system
US11167343B2 (en) 2014-02-21 2021-11-09 Terves, Llc Galvanically-active in situ formed particles for controlled rate dissolving tools
US10865465B2 (en) 2017-07-27 2020-12-15 Terves, Llc Degradable metal matrix composite
CN104502440B (en) * 2014-12-29 2017-10-27 中国石油天然气股份有限公司 Calcite and dolomite C-O isotopes on-line testing method in biased sample
US9910026B2 (en) * 2015-01-21 2018-03-06 Baker Hughes, A Ge Company, Llc High temperature tracers for downhole detection of produced water
EP3267180A4 (en) * 2015-03-04 2019-02-27 National University Corporation Nagoya University Carbon isotope analysis device and carbon isotope analysis method
US10378303B2 (en) 2015-03-05 2019-08-13 Baker Hughes, A Ge Company, Llc Downhole tool and method of forming the same
US10221637B2 (en) 2015-08-11 2019-03-05 Baker Hughes, A Ge Company, Llc Methods of manufacturing dissolvable tools via liquid-solid state molding
US10016810B2 (en) 2015-12-14 2018-07-10 Baker Hughes, A Ge Company, Llc Methods of manufacturing degradable tools using a galvanic carrier and tools manufactured thereof
US11025028B2 (en) * 2017-08-24 2021-06-01 National University Corporation Nagoya University Light generating device, and carbon isotope analyzing device and carbon isotope analyzing method employing same
US11754478B2 (en) 2018-08-16 2023-09-12 Abb Schweiz Ag Rapid equilibrator for water isotope analysis
US20210137413A1 (en) * 2019-11-07 2021-05-13 Vitalii Vorkov Method of Exhaled Gas Analysis and a Universal Portable Breath Content Analyzer for Carrying out the Method
CN112763572A (en) * 2020-12-30 2021-05-07 辽宁红沿河核电有限公司 Method and device for non-radioactive measurement of purification efficiency of iodine adsorber
CN112858217B (en) * 2021-03-12 2022-07-15 中国科学技术大学 Device and spectrum appearance of dual wavelength method ration detection carbon 14 isotope

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE294634C (en) *
US3096010A (en) * 1960-03-23 1963-07-02 Lloyd C Baldwin Game carrier
US3996010A (en) * 1974-11-29 1976-12-07 Searle Cardio-Pulmonary Systems Inc. Breathing gas analyzer
US4184127A (en) * 1977-06-23 1980-01-15 The United States Of America As Represented By The Secretary Of Commerce Frequency stabilized laser
US4402606A (en) * 1981-02-25 1983-09-06 Zalewski Edward F Optogalvanic intracavity quantitative detector and method for its use
US4585344A (en) * 1983-11-30 1986-04-29 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Discharge cell for optogalvanic spectroscopy having orthogonal relationship between the probe laser and discharge axis
US4684805A (en) * 1985-08-21 1987-08-04 General Motors Corporation Method and apparatus for measuring stable isotopes
US4707133A (en) * 1986-03-06 1987-11-17 The United States Of America As Represented By The Secretary Of The Army Apparatus for plasma diagnostics
US4830010A (en) * 1986-04-04 1989-05-16 Marshall Barry J Methods for the diagnosis of gastrointestinal disorders
EP0253927A1 (en) * 1986-04-21 1988-01-27 Baylor College of Medicine A breath test for measuring urease activity in the stomach using carbon isotope urea
IL90105A (en) * 1988-04-29 1993-05-13 Igen Inc Method and apparatus for conducting electro- chemiluminescence measurements
GB2218514B (en) * 1988-05-12 1991-12-11 Gen Motors Corp Process evaluation by isotope enrichment
US4968887A (en) * 1989-07-14 1990-11-06 Evionics, Inc. Gaseous nitrogen detection using excited-state laser spectroscopy
DE4000584A1 (en) * 1990-01-10 1991-07-11 Muetek Gmbh METHOD AND DEVICE FOR DETERMINING CONCENTRATION OF ISOTOPES
JP2844503B2 (en) * 1991-11-20 1999-01-06 東京瓦斯株式会社 Gas measurement device
US5317156A (en) * 1992-01-29 1994-05-31 Sri International Diagnostic tests using near-infrared laser absorption spectroscopy
US5394236A (en) * 1992-02-03 1995-02-28 Rutgers, The State University Methods and apparatus for isotopic analysis

Also Published As

Publication number Publication date
EP0556614B1 (en) 2002-09-18
CA2088100C (en) 1997-11-25
AU659905B2 (en) 1995-06-01
US5394236A (en) 1995-02-28
KR970007066B1 (en) 1997-05-02
US5864398A (en) 1999-01-26
CN1043685C (en) 1999-06-16
US5783445A (en) 1998-07-21
AU3211493A (en) 1993-08-05
KR930018271A (en) 1993-09-21
TW254850B (en) 1995-08-21
EP0556614A1 (en) 1993-08-25
DE69332297D1 (en) 2002-10-24
DE69332297T2 (en) 2003-02-13
ATE224538T1 (en) 2002-10-15
CN1077284A (en) 1993-10-13
JP3338497B2 (en) 2002-10-28
JPH0720054A (en) 1995-01-24

Similar Documents

Publication Publication Date Title
AU3211493A (en) Methods and apparatus for isotopic analysis
DE69025639D1 (en) Method and device for measuring the optical absorption of gas mixtures
AU1477988A (en) Detector assembly for analyzer instrument
AU4050597A (en) Apparatus and method for real-time measurement of cellular response
CA2138671A1 (en) Concentration detector for colored toner
GR3029912T3 (en) Method of preparing a radioactive rhenium complex solution.
EP1380833A3 (en) Apparatus for spectrometrically measuring isotopic gas
ES2035318T3 (en) PARTICLE ASYMMETRY ANALYZER.
EP0746756A4 (en) Methods and apparatus for determining a first parameter(s) of an object
Moulin et al. Determination of uranium in solution at the ng 1− 1 level by time-resolved laser-induced spectrofluorimetry: application to geological samples
IL94822A0 (en) Method and apparatus for determining the characteristics of a fluid having a biological analyte
DE69219767T2 (en) METHOD AND DEVICE FOR MONITORING THE GLUCOSE CONCENTRATION
EP0329889A3 (en) Method and apparatus for analyzing a web of material
EP0350874A3 (en) Surface analysis method and apparatus
CA2008591A1 (en) Process for the analysis of relaxation spectrum and resonances in materials
Decambox et al. Direct and fast determination of uranium in human urine samples by laser-induced time-resolved spectrofluorometry
ATE142335T1 (en) DEVICE FOR PERFORMING SEVERAL SIMULTANEOUS MEASUREMENTS OF ELECTROCHEMILUMINESCENT PHENOMENA
Carroll et al. Luminescence originating in an optical fiber
Delumyea et al. Comparison of reflectance and photoacoustic photometry for determination of elemental carbon in aerosols
ATE41059T1 (en) PROCEDURE FOR DETECTING ALLERGEN-CONTAINING HOUSE DUST.
Devilliers et al. Use of a fluoride-selective electrode for the detection of fluorinated compounds in air
JPH03199952A (en) Method and apparatus for analyzing iodine
CA2170774A1 (en) A method and apparatus for determining the concentration of a component present in a fluid stream in dispersed form
Vasudev et al. Detection of off-gas compounds by cavity ring-down spectroscopy
JPS55115252A (en) Analytical electron microscope

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed