In the paper “Slope ratio calibration for analysis of plant leaves by laser-induced breakdown spectroscopy”, recently published on JAAS, the authors present an allegedly new calibration method for LIBS analysis, called Slope Ratio Calibration (SRC). In this short comment we will demonstrate that this method is completely equivalent to Single-Point Calibration (SPC), when a fair comparison between the two methods is done.

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评论：Lidiane C. Nunes，Fabio RP Rocha和Francisco J. Krug，“通过激光诱导击穿光谱法分析植物叶片的斜率校准”，JAAS，2019，34，2314

在最近发表在JAAS上的论文“通过激光诱导击穿光谱法分析植物叶片的斜率校准”中，作者提出了一种据称用于LIBS分析的新校准方法，称为斜率校准（SRC）。在简短的评论中，我们将证明当两种方法之间进行了合理的比较时，该方法完全等效于单点校准（SPC）。