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
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.

LOD
RMSEP

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Element	Detection Limit (ppm)	Wavelength (nm)	Other Wavelengths (nm)	Calibration Method	Calibration Range (ppm)	Notes
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)
Pb	547.0000 (Minimum Concentration Detected)	220.3530	N/A	Univariate	-10.0000--10.0000	Direct analysis of plastic (toy)

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Element	RMSE (ppm)	Wavelength (nm)	Calibration Method	Notes
No data available in table

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