Quantitative accuracy improvement of laser-induced breakdown spectroscopy by a modified corner-cutting method for continuum background removal

Abstract

As a popular elemental analysis technique, laser-induced breakdown spectroscopy (LIBS) has been applied in many fields, including coal analysis, nuclear industry, deep-sea, and Mars exploration. LIBS spectra have a continuum...

Atomic spectrometry update: review of advances in the analysis of metals, chemicals and materials

“…251 Initial studies with SiO 2 particles gave an upper LOD size of 1200 nm, compared with an estimate of <1000 nm for a cyclonic spray chamber, with 29 Si being the monitored isotope, and measured without the use of a collision cell as this has been reported to induce band broadening which impacts the lower and upper LOD size limits. When applied to the 27 Al signal arising from clay particles it was observed that particle above 420 nm, which were shown to be present by TEM analysis, were not detected. To test the assumption that the larger particles were not detected due to detector saturation, the instrument was signicantly detuned to reduce ion transmission.…”

“…A paper by Hu et al reported methodology to improve accuracy by removing the continuum background signal . 27 A “moving average corner cutting” method was described in full. Results from LIBS analyses where no model was used, moving average corner cutting and from corner cutting alone were compared.…”