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WO2001094921A3 - Capteur de ph et procede d'utilisation de celui-ci - Google Patents

Capteur de ph et procede d'utilisation de celui-ci Download PDF

Info

Publication number
WO2001094921A3
WO2001094921A3 PCT/US2001/018694 US0118694W WO0194921A3 WO 2001094921 A3 WO2001094921 A3 WO 2001094921A3 US 0118694 W US0118694 W US 0118694W WO 0194921 A3 WO0194921 A3 WO 0194921A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensitive material
light
chromatic
sensor system
level
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.)
Ceased
Application number
PCT/US2001/018694
Other languages
English (en)
Other versions
WO2001094921A2 (fr
Inventor
Terry E Phillips
Rengaswamy Srinivasan
C Brent Bargeron
Hassan Saffarian
Elizabeth R Schemm
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.)
Johns Hopkins University
Original Assignee
Johns Hopkins University
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 Johns Hopkins University filed Critical Johns Hopkins University
Priority to EP01942145A priority Critical patent/EP1290429A2/fr
Priority to AU2001275436A priority patent/AU2001275436A1/en
Priority to US10/311,169 priority patent/US20030211011A1/en
Publication of WO2001094921A2 publication Critical patent/WO2001094921A2/fr
Publication of WO2001094921A3 publication Critical patent/WO2001094921A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
    • 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
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G01N21/80—Indicating pH value
    • 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
    • G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

L'invention concerne un capteur de pH et un procédé permettant de contrôler le niveau de pH d'un milieu en fonction des caractéristiques d'un matériau chromatique sensible au pH utilisé dans le capteur de pH. Le capteur de pH comprend au moins un logement présentant au moins une surface transparente, un ensemble de circuits photosensible, par exemple, une DEL, et un photodétecteur à l'intérieur du logement, et un matériau chromatique sensible au pH qui recouvre au moins une portion de la surface transparente; lequel matériau présente la caractéristique de se saturer lorsque un niveau de pH ambiant atteint un niveau prédéterminé, de telle sorte que lorsque le matériau chromatique sensible au pH est saturé, l'ensemble de circuits photosensible détecte une intensité de lumière incidente différente de celle qui est observée lorsque le matériau chromatique sensible au pH n'est pas saturé. Au fur et à mesure que le niveau de pH d'un milieu sous contrôle permanent, par exemple des conteneurs béton de stockage contenant des réactifs, etc. diminue, le matériau sensible au pH déposé sur la surface transparente du logement se sature progressivement en ions d'hydrogène et il devient achromatique. Lorsque le niveau de pH atteint le niveau prédéterminé, le matériau sensible au pH n'est plus capable d'absorber une quelconque lumière émise par la DEL, de telle sorte que la lumière est renvoyée au photodétecteur.
PCT/US2001/018694 2000-06-09 2001-06-08 Capteur de ph et procede d'utilisation de celui-ci Ceased WO2001094921A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01942145A EP1290429A2 (fr) 2000-06-09 2001-06-08 Capteur de ph et procede d'utilisation de celui-ci
AU2001275436A AU2001275436A1 (en) 2000-06-09 2001-06-08 A ph sensor system and method for using same
US10/311,169 US20030211011A1 (en) 2001-06-08 2001-06-08 Ph sensor system and method for using same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21054700P 2000-06-09 2000-06-09
US60/210,547 2000-06-09

Publications (2)

Publication Number Publication Date
WO2001094921A2 WO2001094921A2 (fr) 2001-12-13
WO2001094921A3 true WO2001094921A3 (fr) 2002-04-18

Family

ID=22783328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/018694 Ceased WO2001094921A2 (fr) 2000-06-09 2001-06-08 Capteur de ph et procede d'utilisation de celui-ci

Country Status (3)

Country Link
EP (1) EP1290429A2 (fr)
AU (1) AU2001275436A1 (fr)
WO (1) WO2001094921A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7008795B2 (en) * 2002-09-20 2006-03-07 Mitsubishi Electric Research Labs, Inc. Multi-way LED-based chemochromic sensor
US7723120B2 (en) 2005-10-26 2010-05-25 General Electric Company Optical sensor array system and method for parallel processing of chemical and biochemical information
US8133741B2 (en) 2005-10-26 2012-03-13 General Electric Company Methods and systems for delivery of fluidic samples to sensor arrays
US7883898B2 (en) 2007-05-07 2011-02-08 General Electric Company Method and apparatus for measuring pH of low alkalinity solutions
CN107860771A (zh) * 2017-12-26 2018-03-30 常州大学 一种近零流速的氢氧化钠溶液标定设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63191045A (ja) * 1987-02-04 1988-08-08 Onoda:Kk コンクリ−ト層の中性化深度測定器及びコンクリ−ト層の中性化深度測定方法
EP0416469A2 (fr) * 1989-09-05 1991-03-13 Pacesetter, Inc. Capteur de taux d'oxygène pour stimulateur cardiaque et méthode d'utilisation
WO1998037802A1 (fr) * 1997-02-27 1998-09-03 Minnesota Mining And Manufacturing Company Dispositif de mesure de parametres sanguins
US5925572A (en) * 1996-08-07 1999-07-20 University Of South Florida Apparatus and method for in situ pH measurement of aqueous medium
WO2000029832A1 (fr) * 1998-11-16 2000-05-25 Tufts University Detecteur a fibre optique pour mesure a long terme d'un analysat dans des fluides
US6113858A (en) * 1998-01-26 2000-09-05 Tang; Ruey-Long Monitor with in-situ optical probe for continuous concentration measurements

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63191045A (ja) * 1987-02-04 1988-08-08 Onoda:Kk コンクリ−ト層の中性化深度測定器及びコンクリ−ト層の中性化深度測定方法
EP0416469A2 (fr) * 1989-09-05 1991-03-13 Pacesetter, Inc. Capteur de taux d'oxygène pour stimulateur cardiaque et méthode d'utilisation
US5925572A (en) * 1996-08-07 1999-07-20 University Of South Florida Apparatus and method for in situ pH measurement of aqueous medium
WO1998037802A1 (fr) * 1997-02-27 1998-09-03 Minnesota Mining And Manufacturing Company Dispositif de mesure de parametres sanguins
US6113858A (en) * 1998-01-26 2000-09-05 Tang; Ruey-Long Monitor with in-situ optical probe for continuous concentration measurements
WO2000029832A1 (fr) * 1998-11-16 2000-05-25 Tufts University Detecteur a fibre optique pour mesure a long terme d'un analysat dans des fluides

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 470 (P - 798) 9 December 1988 (1988-12-09) *

Also Published As

Publication number Publication date
WO2001094921A2 (fr) 2001-12-13
EP1290429A2 (fr) 2003-03-12
AU2001275436A1 (en) 2001-12-17

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