Commentary: Comments on: "Accuracy improvement of quantitative analysis for major elements in laser-induced breakdown spectroscopy using single-sample calibration" by Rui Yuan et al. [Anal. Chim. Acta 1064 (2019) 11-16]

o The Single-Sample Calibration LIBS (SSC-LIBS), proposed on this journal by Rui Yuan et al., in 2019, is discussed. o We show that non-declared assumptions make the method equivalent to a conventional calibration curve approach. o As a consequence, the method cannot provide better analytical results than the ones obtained from a normal calibration curve.