Method of instrument standardization for a spectroscopic device
View Patent ↗In a spectroscopic process a sample for producing a test spectral line or spectrum of at least one component contained in the sample is stimulated and the transmitted and/or emitted electromagnetic rays are used to create the test spectral line or spectrum. In order to improve such a spectroscopic process to such an extent that variations of certain parameters, which alter the shape and/or occurrence of a spectral line, are compensated, a comparison spectral line or spectrum of a known comparison material is produced under substantially the same parameters as the sample. The comparison spectral line or spectrum is compared with an ideal comparison spectral line or spectrum in order to calculate a transfer function, and the transfer function is applied to the test spectral line or spectrum in order to calculate a corrected test spectral line or spectrum.
1. A method of standardization for a spectroscopic device comprising the steps of:
providing a detector having a first attachment and a second attachment;
simultaneously stimulating a sample and a comparison material;
producing a first signal indicative of a test spectral line or spectrum of at least one component contained in the sample using the first attachment;
producing a second signal indicative of a comparison spectral line or spectrum of the known comparison material using the second attachment;
comparing the second signal indicative of the comparison spectral line or spectrum produced using the second attachment with an ideal comparison spectral line or spectrum to calculate a transfer function; and,
applying the transfer function to the test spectral line or spectrum to calculate a corrected test spectral line or spectrum.
2. The method according to claim 1 further comprising the step of converting the sample and the comparison material into a gaseous condition before said producing steps.
3. The method according to claim 2 wherein the sample and the comparison material are vaporized, stimulated, and spectrally investigated in the same spectroscopic device.
4. The method according claim 3 wherein the sample and the comparison material are simultaneously vaporized.
5. The method according to claim 1 wherein the ideal comparison spectral line or spectrum is stored in the spectroscopic device or in an examination device relating to it and is retrieved for the calculation of the transfer function.
6. The method according to claim 1 wherein the transfer function is applied to the test spectral line or spectrum to compensate for a wavelength or frequency modification.
7. The method according to claim 1 wherein the transfer function is applied to the test spectral line or spectrum to compensate for a resolution modification of the spectroscopic device.
8. The method according to claim 1 wherein neon is used as the comparison material.
9. The method according to claim 1 wherein a series of comparison spectral lines or spectrums for various parameters are stored, and wherein, through a comparison with a comparison spectral line or spectrum that was actually recorded, a corresponding transfer function is obtained from the stored spectral lines or spectrums and retrieved for application to the test spectral line or spectrum.
10. The method according to claim 1 wherein the transfer function is applied to the test spectral line or spectrum as determined for variation of measurement parameters and device parameters.
11. The method according to claim 1 wherein the transfer function is applied to the test spectral line or spectrum as determined for variation of measurement parameters.
12. The method according to claim 1 wherein the transfer function is applied to the test spectral line or spectrum as determined for variation of device parameters.
13. A spectroscopic process whereby, in a spectroscopic device having a detector with a first attachment and a second attachment, at least one component contained in a sample is stimulated and a first signal indicative of a test spectral line or spectrum of the at least one component in the sample is produced using the first attachment, characterized in that, a comparison material is stimulated, simultaneously with the at least one component in the sample, and a second signal indicative of a comparison spectral line or spectrum is produced using the second attachment, a transfer function is obtained for the known comparison material by using the second signal indicative of the comparison spectral line or spectrum produced using the second attachment, which transfer function translates the comparison spectral line or spectrum into a corrected ideal comparison spectral line or spectrum, and the transfer function is applied to the test spectral line or spectrum.
14. A spectroscopic process according to claim 13 , characterized in that the sample and the comparison material are converted into a gaseous condition before stimulation.
15. A spectroscopic process according to claim 14 , characterized in that the sample and the comparison material are vaporized, stimulated, and spectrally investigated in the same spectroscopic device.
16. A spectroscopic process according claim 15 , characterized in that the sample and the comparison material are simultaneously vaporized.
17. A spectroscopic process according to claim 13 , characterized in that the ideal comparison spectral line or spectrum is stored in the spectroscopic device or in an examination device relating to it and is retrieved for the provision of the transfer function while the comparison spectral line or spectrum is in use.
18. A spectroscopic process according to claim 13 , characterized in that the transfer function is applied to the test spectral line or spectrum to compensate for a wavelength or frequency modification.
19. A spectroscopic process according to claim 13 , characterized in that the transfer function is applied to the test spectral line or spectrum to compensate for a resolution modification of the spectroscopic device.
20. A spectroscopic process according to claim 13 , characterized in that neon is used as comparison material.
21. A spectroscopic process according to claim 13 , characterized in that a series of comparison spectral lines or spectrums for various parameters are stored, and that, through a comparison with a comparison spectral line or spectrum that was actually recorded, a corresponding transfer function is obtained from the stored spectral lines or spectrums and retrieved for application to the test spectral line or spectrum.
22. A spectroscopic process according to claim 13 , characterized in that the transfer function is applied to the test spectral line or spectrum as determined for variation of measurement parameters and device parameters.
23. A spectroscopic process according to claim 13 , characterized in that the transfer function is applied to the test spectral line or spectrum as determined for variation of measurement parameters.
24. A spectroscopic process according to claim 13 , characterized in that the transfer function is applied to the test spectral line or spectrum as determined for variation of device parameters.