LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Analysis of environmental lead contamination: comparison of LIBS field and laboratory instruments R.T. Wainner, R.S. Harmon, A.W. Miziolek, K.L. McNesby, P.D. French Lead ADA Developed Portable System ADA Developed Portable System
Laser: Nd:YAG
Gate Delay: Noneus
Gate Width: Noneus
This paper describes work using both a portable (this ref) and laboratory LIBS systems (here) for the measurement of Pb in a variety of systems. The Detection system is not gated and the laser uses a passive Q-switch - making this a considerably more low-tech system than many in use.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Pb 100.0000 (Minimum concentration detected) 405.7800 220.35 Univariate Calibration -10.0000--10.0000 This result is for Pb in paint samples. Prior to analysis the paint was applied to Al plates. Two coats were used. The authors noted the likelihood of strong interferences at the 405.78nm peak, while there were less ath the 220.35nm peak. However, the sensitivity an the UV line was less. Some depth profiling also performed of Pb paint under layers of latex paint.

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