TY - JOUR
T1 - Accuracy improvement of quantitative analysis for major elements in laser-induced breakdown spectroscopy using single-sample calibration
AU - Yuan, Rui
AU - Tang, Yun
AU - Zhu, Zhihao
AU - Hao, Zhongqi
AU - Li, Jiaming
AU - Yu, Hanyue
AU - Yu, Yunxin
AU - Guo, Lianbo
AU - Zeng, Xiaoyan
AU - Lu, Yongfeng
N1 - Funding Information:
This research was financially supported by National Natural Science Foundation of China (No. 61575073 ).
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/8/8
Y1 - 2019/8/8
N2 - Accurate determination of major elements using limited standard samples is always a big challenge in laser-induced breakdown spectroscopy (LIBS). Based on a simple calculation process, we propose a new one-point calibration method called single-sample calibration LIBS (SSC-LIBS) to build the calibration and improve the accuracy of determination of major elements. In this work, several major elements (Fe, Cu, Zn, Ni, Cr, Nb, and Mo) in three sets of matrix-matched certified samples were determined without sample preparation. The results showed that compared with multipoint calibration LIBS (MPC-LIBS), the R 2 , RMSECV, and ARE of Cu elements were improved from 0.40 to 0.97, 3.55 wt% to 0.76 wt%, and 5.19% to 1.05%, respectively, while the ARSD decreased from 16.22% to 1.15%. Furthermore, the AREs in the concentration ranges of 1–10, 10–20, 30–40, 50–60, 60–70, and 80–100 wt% were 5.16%, 2.55%, 1.75%, 1.69%, 1.05%, and 0.44%, respectively, with almost all less than 5%, as calculated by SSC-LIBS. These results demonstrated that SSC-LIBS can improve the accuracy and stability of detecting major elements using only one standard sample, which can greatly promote the application of LIBS.
AB - Accurate determination of major elements using limited standard samples is always a big challenge in laser-induced breakdown spectroscopy (LIBS). Based on a simple calculation process, we propose a new one-point calibration method called single-sample calibration LIBS (SSC-LIBS) to build the calibration and improve the accuracy of determination of major elements. In this work, several major elements (Fe, Cu, Zn, Ni, Cr, Nb, and Mo) in three sets of matrix-matched certified samples were determined without sample preparation. The results showed that compared with multipoint calibration LIBS (MPC-LIBS), the R 2 , RMSECV, and ARE of Cu elements were improved from 0.40 to 0.97, 3.55 wt% to 0.76 wt%, and 5.19% to 1.05%, respectively, while the ARSD decreased from 16.22% to 1.15%. Furthermore, the AREs in the concentration ranges of 1–10, 10–20, 30–40, 50–60, 60–70, and 80–100 wt% were 5.16%, 2.55%, 1.75%, 1.69%, 1.05%, and 0.44%, respectively, with almost all less than 5%, as calculated by SSC-LIBS. These results demonstrated that SSC-LIBS can improve the accuracy and stability of detecting major elements using only one standard sample, which can greatly promote the application of LIBS.
KW - Laser-induced breakdown spectroscopy
KW - Major elements
KW - Single-sample calibration
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U2 - 10.1016/j.aca.2019.02.056
DO - 10.1016/j.aca.2019.02.056
M3 - Article
C2 - 30982508
AN - SCOPUS:85062639830
SN - 0003-2670
VL - 1064
SP - 11
EP - 16
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
ER -