LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Detection of toxic elements using laser-induced breakdown spectroscopy in smokers’ and nonsmokers’ teeth and investigation of periodontal parameters Yusuf B. Habibullah, Sami Shafik, M. Nasr, M.A. Gondal, Abdul M. Alhasmi Biological Andor ICCD Andor Shamrock 500i
Laser: Nd:YAG
Gate Delay: 0.400us
Gate Width: Noneus
The authors analysed 90 teeth from smokers, nonsmokers (both with peridontal disease) and a control (without disease) for elements linked to disease (Pb, As, Cd). Good RMSEP were obtained for all elements (referenced to ICP). The Temperature and Electron Density of the LIBS plasma were checked to ensure plasma was optically thin.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
As 0.0600 (Lowest Detected Concentrations) 446.6300 N/A Univariate -10.0000--10.0000 In Teeth!
Cd 0.0200 (Lowest Detected Concentrations) 643.8500 N/A None -10.0000--10.0000 In Teeth!
Pb 0.1800 (Lowest Detected Concentrations) 405.7000 N/A Univariate -10.0000--10.0000 Measurement in Teeth.

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
Pb 0.7479 ppm 405.7000 Univariate Calibration . . In Teeth!
Cd 0.0173 ppm 643.8500 Univariate Calibration . In Teeth! .
As 0.0957 ppm 446.6300 Univariate Calibration . . In Teeth!