Method of infrared-optically determining the concentration of at least one analyte in a liquid sample
First Claim
1. A method of infrared-optically determining a concentration of at least one analyte in a liquid sample, comprising the steps of:
- irradiating said liquid sample with an infrared radiation of high light density, said infrared radiation having a sharp intensity peak at at least one wave length;
measuring the infrared absorption of the at least one analyte; and
, comparing said infrared absorption measured with a standard wherein said infrared radiation is produced by at least one tunable laser.
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Abstract
A method of infrared-optically determining the concentration of at least one analyte in a liquid sample, wherein the infrared absorption of the analyte(s) is measured and compared with a standard, which is characterized in that the liquid sample is sampled with an infrared radiation of high light density, wherein the infrared radiation has a sharp intensity peak at at least one wave length, as well as an arrangement for the infrared-optical transmission determination of the concentration of at least one analyte in a liquid sample, with a sample cuvette flowed through by the sample liquid, the sample cuvette being arranged in the radiation path between a radiation source for providing the infrared radiation and a detector for measuring the infrared absorption induced by the analyte in the sample cuvette.
25 Citations
14 Claims
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1. A method of infrared-optically determining a concentration of at least one analyte in a liquid sample, comprising the steps of:
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irradiating said liquid sample with an infrared radiation of high light density, said infrared radiation having a sharp intensity peak at at least one wave length;
measuring the infrared absorption of the at least one analyte; and
,comparing said infrared absorption measured with a standard wherein said infrared radiation is produced by at least one tunable laser. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An arrangement for an infrared-optical transmission determination of a concentration of at least one analyte in a liquid sample, said arrangement comprising:
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a radiation source having the form of at least one tunable laser for providing an infrared radiation of high light density, said infrared radiation having a sharp intensity peak at at least one wave length;
a sample cuvette flowed through by said sample liquid containing said at least one analyte; and
,an infrared absorption detector;
wherein said sample cuvette with said sample liquid containing said at least one analyte is disposed between said radiation source and said detector so as to be passed through by said infrared radiation of high light density, and said infrared absorption detector measuring the infrared absorption induced by said at least analyte in said sample cuvette. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification