Method for the Spectral Analysis of Samples By Means Of a Graphite Tube

摘要

A method for the spectral analysis of samples in a graphite tube, comprising the steps of: inserting a liquid sample into a graphite tube; drying the sample by heating the graphite tube; transferring the sample into a particle cloud by further heating up the graphite tube; and measuring one of the optical signals influenced or generated by the sample with a detector; wherein image sequences of the interior of the graphite tube are recorded with a two-dimensional camera having a plurality of image elements over selected periods of time during the spectral analysis; is characterized in that the images of the image sequences are automatically processed with image processing methods, wherein a reference image of the interior of the graphite tube is determined; and the condition of the graphite tube, of the sample and/or of a dosing means for inserting the sample into the graphite tube is determined by comparison of the images of the image sequences to the reference image.

主权项

1. A method for the spectral analysis of samples in a graphite tube, comprising the steps of:
(a) inserting a liquid sample into a graphite tube having an interior; (b) drying said sample by heating said graphite tube; (c) transferring said sample into a particle cloud by further heating up said graphite tube thereby generating optical signals or providing optical signals influencing conditions in said particle cloud; and (d) measuring one of said optical signals influenced or generated by said sample in said particle cloud with a detector; wherein (e) image sequences of images of said interior of said graphite tube are recorded with a two-dimensional camera having a plurality of image elements over selected periods of time for spectral analysis; (f) said images of said image sequences are automatically processed with image processing methods, (g) a reference image of said interior of said graphite tube is determined; and (h) the condition of said graphite tube, of said sample and/or of a dosing means for the inserting said sample into said graphite tube is determined by comparison of said images of said image sequences to said reference image.