Abstract
Over the years, laser-induced breakdown spectroscopy (LIBS) has been reported in the literature as an alternative to traditional methods of analysis, becoming well established among spectroanalytical techniques. LIBS is a technique widely used for qualitative approaches; however, it is necessary considerable effort for use in quantitative analysis, mainly due to severe matrix effects. These limitations make it difficult to broaden the application of LIBS in quantitative analysis. In this sense, this review discusses recent advances in calibration strategies applied in LIBS for minimizing matrix effects and enabling determination with satisfactory accuracy and precision. Applications, advantages, and limitations of the calibration strategies, such as matrix-matching calibration (MMC), internal standardization (IS), standard addition (SA), multi-energy calibration (MEC), one-point gravimetric standard addition (OP GSA), one-point and multi-line calibration (OP MLC), slope ratio calibration (SRC), two-point calibration transfer (TP CT), single-sample calibration (SSC), multiple linear regression (MLR), principal component regression (PCR), partial least squares (PLS) and artificial neural networks (ANN) are discussed.
Highlights
Laser-induced breakdown spectroscopy (LIBS) has been reported[1,2,3] as the most prominent spectroanalytical technique due to its attractive set of advantageous analytical characteristics
The interaction of the laser or sample with atmospheric conditions may affect the plasma temperature and density, resulting in changes in the emission intensity of constituent elements.[42]. These matrix effects may contribute to the nonstoichiometric ablation of the sample and reduce the ability of quantitative analysis by laser-induced breakdown spectroscopy (LIBS)
According to the t-test, at the 95% of confidence level, no significant difference was observed between the reference results obtained by inductively coupled plasma optical emission spectrometry (ICP OES) or reference materials and Multi-energy calibration (MEC)-LIBS
Summary
Laser-induced breakdown spectroscopy (LIBS) has been reported[1,2,3] as the most prominent spectroanalytical technique due to its attractive set of advantageous analytical characteristics. There are problems with matrix effects, which are currently the main challenge in quantitative LIBS analysis.[20,21,22,23,24,25,26,27,28]. To minimize possible matrix effects normally observed in LIBS analysis, some calibration strategies have been reported in the literature[29,30,31,32,33,34,35] over the last few years to improve its figures of merit. We present the advantages and limitations related to each approach
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
