LIBS Info: Element Analysis
| Title | Authors | Material | Detector | Spectrometer | Software |
|---|---|---|---|---|---|
| Preliminary studies of laser-induced breakdown spectrometry for the determination of Ba, Cd, Cr and Pb in toys | Quienly Godoi, Dário Santos Júnior, Lidiane Cristina Nunes, Flavio O. Leme, Iolanda Aparecida Rufini, Jose A.M. Agnelli, Lilian Cristina Trevizan, Francisco José Krug | Plastic | Kodak KAF 1001 | ESA 3000 | MATLAB |
| Laser: | Nd:YAG 1064.0000nm 250.0000mJ 10.000Hz |
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| Gate Delay: | 1.000us | ||||
| Gate Width: | 6.000us | ||||
| In this paper, heavy metal contaminants in plastic toys are measured. Measurements were performed Argon at 1litre/min. Doehlert experimental design (using peak areas for Ba, Cd, Cr and Pb as the criteria to maximise) was used to optimise number of laser pulses, integration time gate, delay time and laser energy. Worryingly, heavy metals were found in all the samples, and in paint on another toy. | |||||
| Element | Detection Limit (ppm) | Wavelength (nm) | Other Wavelengths (nm) | Calibration Method | Calibration Range (ppm) | Notes |
|---|---|---|---|---|---|---|
| Pb | 547.0000 (Minimum Concentration Detected) | 220.3530 | N/A | Univariate | -10.0000--10.0000 | Direct analysis of plastic (toy) |
| Ba | 311.0000 (Minimum Concentration Detected) | 233.5270 | N/A | Univariate | -10.0000--10.0000 | Direct measurement on plastic (toy). |
| Cd | 61.0000 (Minimum Concentration Detected) | 214.4410 | N/A | Univariate | -10.0000--10.0000 | Direct measurement on plastic (toy). |
| Cr | 90.3000 (Minimum Concentration Detected) | 284.3260 | N/A | Univariate | -10.0000--10.0000 | Direct measurement on plastic (toy) |
| Element | RMSE (ppm) | Wavelength (nm) | Calibration Method | Notes |
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