Method and Apparatus for Spectroscopic Analysis
AssigneeBP Chemicals Limited
InventorsIan Kevin Taylor-Hayward, Alasdiar Iain Thomson
Life of this patent
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Abstract
A method and apparatus for obtaining the gas-phase electromagnetic radiation spectrum of a liquid sample, which apparatus comprises an analysis chamber having an inlet and an outlet, wherein the inlet and analysis chamber are adapted such that, in use, liquid sample is drawn into the inlet through capillary action and vapourised therein, the vapourised liquid sample remaining in the gas phase within the inlet and the analysis chamber The apparatus may be attached to a process conduit or vessel containing a source of the liquid for analysis, making it suitable for collecting on-line spectra.
Claims30
1-21. (canceled)
An apparatus for obtaining the gas-phase electromagnetic radiation spectrum of a liquid sample, which apparatus comprises an analysis chamber having an inlet and an outlet, characterised by the inlet and analysis chamber being adapted such that, in use, liquid sample is drawn into the inlet through capillary action and vapourised therein, the vapourised liquid sample being maintained in the gas-phase within the inlet and the analysis chamber.
A method for obtaining the gas-phase electromagnetic radiation spectrum of a liquid sample, comprising the steps of;
- (a) feeding a liquid sample to the inlet of an apparatus comprising an analysis chamber having an inlet and an outlet, in which the liquid sample is drawn into the inlet through capillary action and vapourised therein, which vapourised liquid sample passes into the analysis chamber;
- (b) directing one or more frequencies of electromagnetic radiation into the analysis chamber;
- (c) detecting one or more frequencies of electromagnetic radiation transmitted through and/or emitted by the vapourised liquid sample in the analysis chamber by a detector;
- (d) passing the vapourised liquid sample from the analysis chamber to the sample outlet;
- (e) calculating the absorption characteristics of the vapourised liquid sample from the one or more frequencies of electromagnetic radiation received by the detector in step (c).
Dependencies are inferred from the claim text.