LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Field Deployable Method for Gold Detection Using Gold Pre-Concentration on Functionalized Surfaces Heike Ebendorff-Heidepriem, Krasimir Vasilev, Caroline Tiddy, Steven Tassios, Akash Bachhuka, Agnieszka Zuber Geological Spectrolaser 4000 Spectrolaser 4000 Spectrolaser
Laser: Nd:YAG
Gate Delay: 0.800us
Gate Width: 1000.000us
The authors demonstrate a method for pre-concentrating gold onto a planar substrate, which is then analysed using LIBS. This has a applications for field analysis, without the use of dangerous chemicals. Tests with geological sample showed good leaching of gold from the sample (47% or greater). LIBS analysis of rock powder samples failed to detect Au (even at 47ppm) due to the low chance of scanning the rock particles bearing gold.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Au 0.0800 (Minimum Detectable Concentration) 267.6000 274.8 None -10.0000--10.0000 Using solutions only containing gold

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