Avl Medical Instruments Ag

Anton Paar Gmbh

Max Lippitsch

Marco J Leiner

Hellfried Karpf

Robert Kellner, Deceased

Sonja Draxler

In a method for infrared-optical determination of the concentration of at least one chemical analyte in a liquid sample, where the liquid sample is passed through a measuring cell and irradiated with infrared radiation of a single narrow waverange and infrared absorption is measured, the analyte being determined is subject to a chemical reaction before measurement, which should leave the other components of the liquid sample unaffected, and the change in infrared absorption caused by the chemical reaction with the analyte is measured as a unique function of the analyte concentration to be determined.

Method for infrared-optical determination of the concentration of at

A luminescence-optical indicator for determining the activity of alkali metals based on decay time includes at least three components that are chemically bound to one another, i.e., a fluorophor, a functional group with which the luminescence decay time of the fluorophor can be influenced, and a ionophor binding the alkali metal ions to be measured in a selective and reversible manner, the effect of the functional group on the decay time of the fluorophor being altered in dependence on the activity of the alkali metal ions.

Luminescence-optical indicator for determining the activity of alkali

Substance of an optical fluorescence measuring arrangement for measuring

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Graz, Austria

Max Lippitsch