LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Analysis of small droplets with a new detector for liquid chromatography based on laser-induced breakdown spectroscopy Christoph Janzen, Rudiger Fleige, Reinhard Noll, Heinrich Schwenke, Wilhelm Lahmann, Joachim Knoth, Peter Beaven, Eckard Jantzen, Andreas Oest, Peter Koke Liquids ESA 3000 ESA 3000
Laser: Nd:YAG
Gate Delay: Noneus
Gate Width: Noneus
The paper describes the use of LIBS to make measurements on the output liquid from a HPLC. A well engineered rig using the HPLC output, a system to produce liquid droplets from the HPLC output, then a system to detect the falling droplets and fire the LIBS laser for analysis in a Paschen Runge/31 Photomultiplier detection system is described. However, the concentration limit measurements are made using a separate rig and and an eschelle spectrometer.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Na 0.7500 (Stated) 589.0000 589.59nm Univariate Calibration -10.0000--10.0000 Laser Wavelength: 1064nm Laser Energy: 60mJ/Pulse Experiments at 266nm yielded a LOD of 2ppm, although only 25mJ pulses were available at this wavelength.
Ca 0.0200 (Stated) 393.3700 N/A Univariate Calibration -10.0000--10.0000 Laser Wavelength: 1064nm Pulse Energy: 60mJ

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