LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Analysis of lead and copper in soil samples by laser‑induced breakdown spectroscopy under external magnetic field | M.A. Baig, Rizwan Ahmed, Z A Umar, S. Mahmood, Nasar Ahmed, A. Jabbar, M. Akhtar | Soil | AvaSpec-2048-SPU | AvaSpec-2048-SPU | |
| Laser: | Nd:YAG 532.0000nm 130.0000mJ 10.000Hz |
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| Gate Delay: | 2.000us | ||||
| Gate Width: | 3000.000us | ||||
| Detection limits for Cu and Pb in soil were improved using 0.7T magnetic field from fixed magnets 2cm apart. Soil samples were spiked with different concentrations of Pb and Cu and then pressed into pellets for analysis. The presence of the magnetic field enhances the peaks through plasma confinement, leading to increases in plasma temperature (and hence emission). There is similarly an increase in electron density. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|---|---|---|---|---|---|
| Cu | 1.4000 (Calibration Curve Slope) | 324.7500 | N/A | Univariate | 60.0000-240.0000 | Soil samples, with 0.7T external magnetic field |
| Cu | 3.9000 (Calibration Curve Slope) | 324.7500 | N/A | Univariate | 60.0000-240.0000 | Soil samples, without external magnetic field |
| Pb | 4.1000 (Calibration Curve Slope) | 405.7800 | N/A | Univariate | 20.0000-180.0000 | Soil samples, with 0.7T external magnetic field |
| Pb | 12.0000 (Calibration Curve Slope) | 405.7800 | N/A | Univariate | 20.0000-180.0000 | Soil samples, without external magnetic field |
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
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