ZA722460B - Method and apparatus for the detection of selected components in fluids - Google Patents

Method and apparatus for the detection of selected components in fluids

Info

Publication number
ZA722460B
ZA722460B ZA722460A ZA722460A ZA722460B ZA 722460 B ZA722460 B ZA 722460B ZA 722460 A ZA722460 A ZA 722460A ZA 722460 A ZA722460 A ZA 722460A ZA 722460 B ZA722460 B ZA 722460B
Authority
ZA
South Africa
Prior art keywords
fluids
detection
selected components
components
Prior art date
Application number
ZA722460A
Other languages
English (en)
Inventor
J Mcnerney
Original Assignee
Selco Mining Corp Ltd
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 Selco Mining Corp Ltd filed Critical Selco Mining Corp Ltd
Publication of ZA722460B publication Critical patent/ZA722460B/xx

Links

Classifications

    • 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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • 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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
    • 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
    • G01N33/0045—Hg

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
ZA722460A 1971-04-23 1972-04-12 Method and apparatus for the detection of selected components in fluids ZA722460B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13768471A 1971-04-23 1971-04-23

Publications (1)

Publication Number Publication Date
ZA722460B true ZA722460B (en) 1973-01-31

Family

ID=22478606

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA722460A ZA722460B (en) 1971-04-23 1972-04-12 Method and apparatus for the detection of selected components in fluids

Country Status (8)

Country Link
US (1) US3714562A (enExample)
AU (1) AU458884B2 (enExample)
CA (1) CA944178A (enExample)
DE (1) DE2219718A1 (enExample)
FR (1) FR2136543A5 (enExample)
GB (1) GB1373069A (enExample)
SE (1) SE384737B (enExample)
ZA (1) ZA722460B (enExample)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924219A (en) * 1971-12-22 1975-12-02 Minnesota Mining & Mfg Gas detection device
US3901067A (en) * 1973-06-21 1975-08-26 Gen Monitors Semiconductor gas detector and method therefor
US4092119A (en) * 1973-11-23 1978-05-30 Calspan Corporation Environmental quality indicator
DE2408218C3 (de) * 1974-02-21 1983-11-03 Ehlen, Karl Josef, Dr., 5000 Köln Schaltungsanordnung zum Nachweis von Gasen
US3950980A (en) * 1974-03-27 1976-04-20 Minnesota Mining And Manufacturing Company Vapor sampling device
US3933028A (en) * 1974-04-23 1976-01-20 Ford Motor Company Air/fuel ratio sensor for air/fuel ratios in excess of stoichiometry
GB1536305A (en) * 1976-08-31 1978-12-20 Rosemount Eng Co Ltd Catalytic gas detector
FR2456283A1 (fr) * 1979-05-11 1980-12-05 Gaz De France Dispositif de declenchement d'alarme associe a une conduite dans laquelle circule un fluide entrainant avec lui des particules solides
DE3173036D1 (en) * 1980-12-31 1986-01-02 Geoffrey William Ball Gas monitor
USD277835S (en) 1982-07-02 1985-03-05 Jerome Instrument Corporation Mercury vapor analyzer
CH665908A5 (de) * 1983-08-30 1988-06-15 Cerberus Ag Vorrichtung zum selektiven detektieren der gasfoermigen bestandteile von gasgemischen in luft mittels eines gassensors.
US5010021A (en) * 1983-09-06 1991-04-23 Arizona Instrument Corp. Method for restoring the sensing capacity of an electrical sensor
US5134080A (en) * 1983-09-06 1992-07-28 Arizona Instrument Corp. Fluid component detection method
US4724008A (en) * 1983-09-06 1988-02-09 Arizona Instruments Method for restoring the sensing capacity of an electrical sensor
US5087574A (en) * 1983-09-06 1992-02-11 Arizona Instrument Corp. Fluid component detection method with feedback
US4953387A (en) * 1989-07-31 1990-09-04 The Regents Of The University Of Michigan Ultrathin-film gas detector
US5380490A (en) * 1991-01-18 1995-01-10 Canon Kabushiki Kaisha Apparatus for measuring a test specimen
US5587130A (en) * 1993-03-15 1996-12-24 Arizona Board Of Regents Selected area adhesion and surface passivation of metal films
US5466605A (en) * 1993-03-15 1995-11-14 Arizona Board Of Regents Method for detection of chemical components
US5521099A (en) * 1994-09-23 1996-05-28 Arizona Board Of Regents Method and apparatus for sensing combustible gases employing and oxygen-activated sensing element
US5985673A (en) * 1994-12-22 1999-11-16 Arizona Baord Of Regents Method for regeneration of a sensor
US5571401A (en) * 1995-03-27 1996-11-05 California Institute Of Technology Sensor arrays for detecting analytes in fluids
US5759493A (en) * 1996-04-30 1998-06-02 Arizona Instrument Corporation Apparatus for detecting a specified gas within a mixture
DE19741697C2 (de) * 1996-12-06 2002-02-21 Roth Hansjoachim Chip zur Überwachung der Quecksilberkonzentration in der Luft
US6897070B2 (en) * 1999-09-01 2005-05-24 Micron Technology, Inc. Detection of gas phase materials
US6422059B1 (en) * 2000-08-01 2002-07-23 Calgon Carbon Corporation Apparatus for detecting changes in concentrations of components of fluid mixtures
US6479297B1 (en) * 2000-08-31 2002-11-12 Micron Technology, Inc. Sensor devices, methods and systems for detecting gas phase materials
US6786076B2 (en) 2002-11-25 2004-09-07 Reliable Instruments Llc Thin film gas sensor
DE102006012088B4 (de) * 2006-03-14 2008-02-14 Heraeus Sensor Technology Gmbh Verwendung einer epitaktischen Widerstandsstruktur als stoffsensitiven Sensor, Verfahren zum Betreiben des stoffsensitiven Sensors sowie stoffsensitiver Sensor
JPWO2016103561A1 (ja) * 2014-12-22 2017-10-05 パナソニックＩｐマネジメント株式会社 化学物質濃縮器および化学物質検出装置
USD768012S1 (en) * 2015-05-27 2016-10-04 Bitfinder, Inc. Air quality monitoring device
US10514371B2 (en) 2017-11-01 2019-12-24 Savannah River Nuclear Solutions, Llc Reactive diffusive gradient in thin-film sampler and mercury speciation by use of same
US11319225B2 (en) 2018-10-24 2022-05-03 Savannah River Nuclear Solutions, Llc Modular system and method for mercury speciation in a fluid sample

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558279A (en) * 1967-06-20 1971-01-26 Ionics Electrochemical sensor device
US3625756A (en) * 1969-01-21 1971-12-07 Naoyoshi Taguchi Method for making a gas-sensing element

Also Published As

Publication number Publication date
SE384737B (sv) 1976-05-17
CA944178A (en) 1974-03-26
US3714562A (en) 1973-01-30
AU4121772A (en) 1973-10-25
GB1373069A (en) 1974-11-06
AU458884B2 (en) 1975-02-18
FR2136543A5 (enExample) 1972-12-22
DE2219718A1 (de) 1972-11-09

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