LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Optimization of chemical and instrumental parameters in hydride generation laser-induced breakdown spectrometry for the determination of arsenic, antimony, lead and germanium in aqueous samples | Serife Yalcin, Semira Unal Yesiller | Liquids | Mechelle 5000 | Andor iStar ICCD | |
| Laser: | Nd:YAG 532.0000nm 160.0000mJ 10.000Hz |
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| Gate Delay: | 3.000us | ||||
| Gate Width: | 100.000us | ||||
| The production of metal hydrides is used to increase the sensitivity of LIBS analysis of liquids. The authors undertake an extensive study to optimise the experimental conditions for inert gas (Ar providing significant improvement for most elements), delay and gate times, spectral line, flow rate and the addition of oxidizing/reducing agents to improve detection limits. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|---|---|---|---|---|---|
| Ge | 0.2000 (Calibration Curve Slope) | 265.1000 | N/A | Univariate | -10.0000--10.0000 | Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. |
| Pb | 1.3000 (Calibration Curve Slope) | 405.8000 | N/A | Univariate | -10.0000--10.0000 | Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. |
| Sb | 1.0000 (Calibration Curve Slope) | 259.8000 | N/A | Univariate | -10.0000--10.0000 | Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. |
| As | 1.1000 (Calibration Curve Slope) | 278.0000 | N/A | Univariate | -10.0000--10.0000 | Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. |
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
|---|---|---|---|---|
| Pb | 2.4471 ppm | 405.8000 | Univariate Calibration | . Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. . |
| Sb | 0.0117 ppm | 259.8000 | Univariate Calibration | Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. . . |
| As | 1.4842 ppm | 278.0000 | Univariate Calibration | . Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. . |
| Ge | 0.8171 ppm | 265.1000 | Univariate Calibration | . Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. Significant enhancement in sensitivity is achieved by Hydride formation, then optimisation of analysis conditions. |