EP0340018A2
Expired / Lapsed
EP
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Composition, apparatus and method for sensing ionic components
Assignee: 3M Co
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Filing: 1989-04-27
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Granted: —
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Expires: 2009-04-27
Abstract
Abstract A composition of matter useful for sensing the concentration of an ionic component in a medium comprising a cationic or anionic matrix material and a sensing component chemically bonded to the matrix material and being effective to provide a signal in response to the presence of the ionic component in the medium.
Inventors
- 👤 Masao Yafuso
- 👤 Henry Ka-Wah-Hui
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:12
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/84; G01N21/00; G01N21/62; G01N21/63; G01N21/64; G01N21/6428; G01N21/75; G01N31/00; G01N31/22; G01N31/221; G01N21/77; G01N21/78; G01N21/80
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
64 words
A apparatus for measuring the concentration of an ionic component in a medium comprising: sensor means including a cationic or anionic matrix material and a sensing component chemically bonded to said matrix material and being effective to provide a signal in response to the presence of said ionic component in said medium; and signal means capable of transmitting said signal from said sensing component.
Claim 2
Independent Claim
64 words
A apparatus for measuring the concentration of an ionic component in a medium comprising: sensor means including a cationic or anionic matrix material and a sensing component chemically bonded to said matrix material and being effective to provide a signal in response to the presence of said ionic component in said medium; and signal means capable of transmitting said signal from said sensing component.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 wherein said sensing component is covalently bonded to said matrix material.
Claim 4
Independent Claim
17 words
The apparatus of any of claims 1 or 2 wherein said ionic component is H⁺ or OH⁻.
Claim 5
Independent Claim
26 words
The apparatus of any of claims 1, 2 or 3 wherein said sensing component is a fluorescence indicator and said signal means comprises an optical fiber.
Claim 6
Independent Claim
71 words
A method for sensing the concentration of an ionic component in a medium comprising: contacting said medium with a composition comprising a cationic or anionic matrix material and a sensing component chemically bonded to said matrix material and being effective to provide a signal in response to the presence of said ionic component in said medium; and analyzing said signal to determine the concentration of said ionic component in said medium.
Claim 7
Independent Claim
71 words
A method for sensing the concentration of an ionic component in a medium comprising: contacting said medium with a composition comprising a cationic or anionic matrix material and a sensing component chemically bonded to said matrix material and being effective to provide a signal in response to the presence of said ionic component in said medium; and analyzing said signal to determine the concentration of said ionic component in said medium.
Claim 8
Independent Claim
148 words
An apparatus for measuring the concentration of an ionic component in a medium comprising: sensor means including a combination of at least two of:(1) a cationic matrix material and a first sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a first concentration range;(2) a substantially nonionic matrix material and a second sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a second concentration range; and (3) an anionic matrix material and a third sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a third concentration range; and signal means capable of transmitting said signals from said first, second and third sensing components.
Claim 9
Independent Claim
148 words
An apparatus for measuring the concentration of an ionic component in a medium comprising: sensor means including a combination of at least two of:(1) a cationic matrix material and a first sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a first concentration range;(2) a substantially nonionic matrix material and a second sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a second concentration range; and (3) an anionic matrix material and a third sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a third concentration range; and signal means capable of transmitting said signals from said first, second and third sensing components.
Claim 10
Dependent Claim
26 words
The apparatus of claim 6 wherein said first, second and third sensing components are chemically bonded to said cationic, substantially nonionic and anionic matrix materials, respectively.
Claim 11
Independent Claim
41 words
The apparatus of any of claims 6 or 7 wherein said first, second and third sensing components are derived from the same indicator material and at least two of said first, second and third concentration ranges are at least partially different.
Claim 12
Independent Claim
29 words
The apparatus of any of claims 6, 7 or 8 wherein said first, second and third sensing components are fluorescence indicators and said signal means is an optical fiber.
Claim 13
Independent Claim
157 words
A method for sensing the concentration of an ionic component in a medium comprising: contacting said medium with a composition comprising a combination of at least two of:(1) a cationic matrix material and a first sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a first concentration range;(2) a substantially nonionic matrix material and a second sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a second concentration range; and(3) an anionic matrix material and a third sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a third concentration range; and analyzing said signal or signals provided by said sensing components to determine the concentration of said ionic component in said medium.
Claim 14
Independent Claim
157 words
A method for sensing the concentration of an ionic component in a medium comprising: contacting said medium with a composition comprising a combination of at least two of:(1) a cationic matrix material and a first sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a first concentration range;(2) a substantially nonionic matrix material and a second sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a second concentration range; and(3) an anionic matrix material and a third sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a third concentration range; and analyzing said signal or signals provided by said sensing components to determine the concentration of said ionic component in said medium.
Claim 15
Dependent Claim
134 words
A composition of matter useful for sensing the concentration of an ionic component in a medium comprising a combination of at least two of: (1) a cationic matrix material and a first sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a first concentration range; (2) a substantially nonionic matrix material and a second sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a second concentration range; and (3) an anionic matrix material and a third sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a third concentration range.
Claim 16
Dependent Claim
134 words
A composition of matter useful for sensing the concentration of an ionic component in a medium comprising a combination of at least two of: (1) a cationic matrix material and a first sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a first concentration range; (2) a substantially nonionic matrix material and a second sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a second concentration range; and (3) an anionic matrix material and a third sensing component associated therewith and being effective to provide a signal in response to the presence of said ionic component in said medium in a third concentration range.
Claim 17
Dependent Claim
50 words
A composition of matter useful for sensing the concentration of an ionic component in a medium comprising a cationic matrix material and a sensing component chemically bonded to said matrix material and being effective to provide a signal in response to the presence of said ionic component in said medium.
Claim 18
Dependent Claim
50 words
A composition of matter useful for sensing the concentration of an ionic component in a medium comprising a cationic matrix material and a sensing component chemically bonded to said matrix material and being effective to provide a signal in response to the presence of said ionic component in said medium.
References Cited (Backward Citations)
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