LIBS Info: Element Analysis

Title Authors Material Detector Spectrometer Software
Evaluation of laser induced breakdown spectroscopy for the determination of micronutrients in plant materials Lilian Cristina Trevizan, Dário Santos Júnior, Ricardo Elgul Samad, Nilson Dias Viera Jr., Lidiane Cristina Nunes, Iolanda Aparecida Rufini, Francisco José Krug Plants ESA 3000 ESA 3000
Laser: Nd:YAG
Gate Delay: 2.000us
Gate Width: 5.000us
Samples were produced by cryogenic grinding, prior to pressing into pellets and analysed under Argon atmosphere. LODs were measured for 8 and 30 analysis pulses with significant improvements obtained for the additional pulses. Peak heights and areas were used evaluated for calibrations, with peak height proving better.
Element Detection Limit (ppm) Wavelength (nm) Other Wavelengths (nm) Calibration Method Calibration Range (ppm) Notes
Be 1.4000 (Calibration Curve Slope) 249.7740 N/A Univariate -10.0000--10.0000 LOD of 2.2ppm obtained using 8 laser pulses [1.4ppm with 30 laser pulses]
Cu 2.5000 (Calibration Curve Slope) 324.7500 327.396 Univariate -10.0000--10.0000 Using other peaks or numbers of pulses, then LODs in range 2.5-5.0ppm determined
Fe 2.8000 (Calibration Curve Slope) 259.9400 275.573nm Univariate -10.0000--10.0000 LODs in the range 2.8-5.6ppm depending on peak and number of pulses
Mn 1.1000 (Calibration Curve Slope) 257.6100 294.92nm Univariate -10.0000--10.0000 LODs in range 1.1-5.5ppm depending on wavelength and number of analysis pulses
Zn 1.0000 (Calibration Curve Slope) 206.2000 213.856nm Univariate -10.0000--10.0000 LODs in the range of 1.0-3.2ppm depending on wavelength and number of analysis pulses used.

Element RMSE (ppm) Wavelength (nm) Calibration Method Notes
Mn 9.4163 ppm 257.6100 Univariate Calibration
Fe 46.4507 ppm 259.9400 Univariate Calibration
Cu 1.6186 ppm 324.7540 Univariate Calibration
Zn 7.2861 ppm 206.2000 Univariate Calibration
B 1.9149 ppm 249.7740 Univariate Calibration