LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
New near-infrared LIBS detection technique for sulfur George Asimellis, A. Giannoudakos, M. Kompitsas Sulphur Andor iStar III Jobin-Yvon HRP
Laser: Nd:YAG
Gate Delay: 1.000us
Gate Width: 5.000us
Analysis is made of S powder in Ca(NO3)2 pressed into pellets. However, the main point of the paper is to explore the detection limits for S.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
S 5000.0000 (Minimum concentration detected) 869.4600 N/A Univariate Calibration 5000.0000-200000.0000 The 869.46nm peak was chosen as their detector did not have good sensitivity and the stronger 921.28/922.81/92..75nm triplet. Data collected under He atmosphere. Signal strength dependent on He pressure, with best results at 100-200mbar. No ratioing was performed, as there were no suitable peaks in the available spectrum around the S peak at 869.46nm.

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes