LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| PROCEDURE FOR MATRIX EFFECT REDUCTION IN METAL ANALYSIS USING LASER-INDUCED BREAKDOWN SPECTROSCOPY | M. A. Al-Eshaikh | Brass | Spectrolaser 7000 | Spectrolaser 7000 | Spectrolaser |
| Laser: | Nd:YAG 1064.0000nm 350.0000mJ 15.000Hz |
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| Gate Delay: | Noneus | ||||
| Gate Width: | Noneus | ||||
| While a little short on detail, the paper outlines a process of firstly optimising the collection hardware to give the lowest RSD and the highest signal to background ratio. Next the peaks of key elements are ratioed to the total signal intensity (to reduce shot to shot fluctuations). Finally, a ratio to a peak from the major matrix element [known to be at constant concentration, for example the hydrogen from the moisture in the air] is used to further reduce the variation. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|---|---|---|---|
| Pb | 2923.1832 ppm | -10.0000 | Univariate | A ratio of peak to total intensity, then to element at constant concentration (maybe H) A ratio of peak to total intensity, then to element at constant concentration (maybe H) |
| Zn | 14000.0000 ppm | -10.0000 | Univariate | A ratio of peak to total intensity, then to element at constant concentration (maybe H) |
| Cu | 11600.0000 ppm | -10.0000 | Univariate | A ratio of peak to total intensity, then to element at constant concentration (maybe H). This is quite a good result for such a high concentration |
| Cr | 0.1900 % | -10.0000 | Univariate | A ratio of peak to total intensity, then to element at constant concentration (maybe H) |