LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Controlled inert gas environment for enhanced chlorine and fluorine detection in the visible and near-infrared by laser-induced breakdown spectroscopy B | George Asimellis, Stephen Hamilton, A. Giannoudakos, M. Kompitsas | Pharmaceuticals | Andor iStar III | Jobin-Yvon HRP | |
| Laser: | Nd:YAG 355.0000nm 26.0000mJ 5.000Hz |
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| Gate Delay: | 0.100us | ||||
| Gate Width: | 20.000us | ||||
| The main point of the paper is to explore the improvement of detection limits for F and Cl. The samples (pharmaceutical and NaCl/NaF) were chosen for their easy preparation for analysis. Experiments were performed in a low pressure (up to 1atm) He environment. S/N was found to be strongly He pressure dependent. 355nm laser provided better sensitivity as it resulted in lower Bremstrahlung background than using 1064nm pulses. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|---|---|---|---|---|---|
| F | 300.0000 (Minimum concentration detected) | 685.6000 | N/A | Univariate Calibration | -10.0000--10.0000 | No correction by ratio was used as no good candidate element in spectral range. |
| Cl | 3750.0000 (Minimum concentration detected) | 837.5900 | N/A | Univariate Calibration | -10.0000--10.0000 | The authors anticipated lower detection limits were possible with their apparatus, but did not explore this. |
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
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