METHODS AND SENSORS FOR DETECTING OR MEASURING AN ACID OR BASE

The invention relates to a method and sensors for measuring the concentratio n of an acid or base or the pH in an environment. The sensor is composed of an index of refraction transducer having at its outer surface at least one compound with at least one functional group of a Lewis acid, a Lewis bas...

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Bibliographic Details
Main Authors SUGGS, JAMES V, MOORE, JEFFREY L, CAMPBELL, DANIEL P
Format Patent
LanguageEnglish
French
Published 11.05.2000
Edition7
Subjects
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
TECHNICAL SUBJECTS COVERED BY FORMER USPC
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TESTING
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Summary:The invention relates to a method and sensors for measuring the concentratio n of an acid or base or the pH in an environment. The sensor is composed of an index of refraction transducer having at its outer surface at least one compound with at least one functional group of a Lewis acid, a Lewis base, a Bronsted acid, a Bronsted base, or a combination thereof, with the provisos that (i) the compound does not undergo a color change when contacted with th e acid or base, and (ii) when there are naturally occurring functional groups, no transducer attached compounds, and exactly one overlayer, then the overlayer is not poly(vinyl alcohol).
Bibliography:Application Number: CA19992348503