| 摘要 |
The present invention concerns a method and system for gas concentration measurement of gas or gas mixtures dissolved in liquids. A gas or gas mixture dissolved in a liquid sample is extracted from the liquid sample using an extraction system (2) and conducted into a measurement chamber (4). Then a measurement signal is generated by means of a radiant source (3) and the measurement signal is directed to a measurement object (6) in a measurement chamber (4) containing the gas or gas mixture to be measured. The measurement signal is filtered using at least two wavelengths (λ-ι, λ2), whereupon the filtering is preferably implemented by means of an electrically tunable, short resonator Fabry-Perot interferometer (7). Then the filtered measurement signals are detected by means of a detector (8). |
