Sensor membrane of an optical sensor

Details Sensor membrane of an optical sensor Sensor membrane of an optical sensor

1997-04-14

2000-10-31

Snay, Jeffrey

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

422 8208, 436136, 4271632, G01N 2164

Patent

active

061397989

ABSTRACT:
The sensor membrane of an optical sensor for detection of O.sub.2, H.sub.2 O.sub.2, SO.sub.2 or halogenated hydrocarbons in a sample contains an indicator substance that is homogeneously immobilized in the polymer matrix of the sensor membrane and is, at least indirectly, in contact with the sample, changing at least one of its optical properties upon a change of the parameter to be measured. The indicator substance contains an inorganic salt of a transition metal complex with .alpha.-diimine ligands. The indicator substance is homogeneously distributed in the polymer matrix, which essentially consists of at least one substance belonging to the group of cellulose derivatives, polystyrenes, polytetrahydrofuranes, or their respective derivatives.

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patent: 4925268 (1990-05-01), Iyer et al.
patent: 4994396 (1991-02-01), Lefkowitz et al.
patent: 5030420 (1991-07-01), Bacon et al.
Neumann, G. et al. "Polyurethane Films for the Production of Membrane-covered Oxygen Sensors" Chemical Abstracts, vol. 105, No. 4, 25356v, (1986).
Wolfbeis et al., "A New Sensing Material . . . in an Aqueous Phase" in Mikrochim Acta, 1986 III, pp. 359-366.

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