Meirong Dong

TL;DR: The results showed that the characteristic of C2 bands emission is similar with that of neutral atomic carbon emission CI in different atmosphere (air and argon) and it has great relationship with the existence of CN radicals, the interaction between plasma and air ambient, and the recombination of excited partials.

TL;DR: In this paper, a broad set of coal samples with different amounts of volatile matter content were tested by LIBS, and the experimental results derived from the correlation were consistent with those from standard analysis procedures (thermo-gravimetric analysis, TGA).

TL;DR: Results show that a good agreement is observed between the ash content provided by thermo-gravimetric analyzer and the LIBS measurements coupled to the PLS regression model for the unknown samples, and it is confirmed that this technique has good potential for quantitative analysis of theAsh content of coal.

TL;DR: In this article, a set of calibration models were generated for phosphorus and potassium with the method of partial least squares (PLS) analysis, which is known as a multivariate calibration method.

TL;DR: In this article, the influence of different spectral preprocessing methods such as smoothing, standard normal variate transformation (SNV), multiplicative scatter correction (MSC), mean centering (MC), and derivation by convolution (Savitzky-Golay) on the quantitative model have been analyzed and compared.