LIBS Info: Element Analysis

Title	Authors	Material	Detector	Spectrometer	Software
Chlorine detection in cement with laser-induced breakdown spectroscopy in the infrared and ultraviolet spectral range	Christoph Dominic Gehlen, Eugen Wiens, Reinhard Noll, G. Wilsch, Kenji Reichling	Concrete or Cement	Photomultiplier	Paschen-Runge Spectrometer
Laser:	Nd:YAG 1064.0000nm 450.0000mJ 50.000Hz
Gate Delay:	0.100us
Gate Width:	10.000us
Both the IR Cl peak at 837.59nm and the UV peak at 134.72nm are investigate for their ability to detect Chlorine in concrete. Measurements are performed in a sample chamber which can be filled with He gas - to improve the detection limits by the use of a buffer gas, and to reduce the UV absorption that would occur in air. Interestingly the Cl peak intensity as a function of He gas pressure was different for the IR compared to the UV peak. Single and Double Pulse LIBS are compared.

LOD
RMSEP

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Element	Detection Limit (ppm)	Wavelength (nm)	Other Wavelengths (nm)	Calibration Method	Calibration Range (ppm)	Notes
Cl	1000.0000 (Calibration Curve Slope)	134.7200	N/A	Univariate	500.0000-40000.0000	Helium atmosphere. Peak intensity ratioed to Background at 861nm
Cl	2300.0000 (Calibration Curve Slope)	134.7200	N/A	Univariate	500.0000-40000.0000	60mbar Helium atmosphere. DP LIBS result, however this is not as good as the single pulse LIBS LOD.

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

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