Correction method for the influence of environmental factors on laser-induced breakdown spectroscopy

被引：4

作者：

Zhong, Qixiu ^{[1
,2
]}

Zhao, Tianzhuo ^{[1
,2
,3
]}

Li, Xin ^{[1
,2
]}

Nie, Shuzhen ^{[1
,3
]}

Xiao, Hong ^{[1
,3
]}

Ma, Yunfeng ^{[1
]}

Cheng, Wang ^{[1
]}

Guo, Guangyan ^{[1
]}

Fan, Zhongwei ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100094, Peoples R China

[2] Univ Chinese Acad Sci, Sch Optoelect, Beijing 100049, Peoples R China

[3] DPSSL, Natl Engn Res Ctr, Beijing 100094, Peoples R China

来源：

OPTICS LETTERS | 2021年 / 46卷 / 20期

关键词：

EXPERIMENTAL PARAMETERS; SAMPLE TEMPERATURE; ABLATION; EMISSION; DYNAMICS;

D O I：

10.1364/OL.442763

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Environmental factors include sample temperature, ambient gas composition, and pressure, which have a significant impact on the accuracy and stability of the analysis results of laser-induced breakdown spectroscopy (LIBS). In this study, a method for simultaneously correcting the influence of several environmental factors is proposed. When the calibration and application environment are different, only one sample is needed to be measured in the application environment to correct the influence of environmental factors, so that the calibration model can obtain good analytical accuracy in this environment. When using one to four samples to correct the influence of environmental factors, the application of the calibration models constructed under solid-state conditions at atmosphere pressure to analyze seven elements in molten alloys in vacuum demonstrated the average root mean square error of prediction (RMSEP) of 0.57%, 0.51%, 0.41%, and 0.30% respectively. The accuracy of using only one sample to correct the influence of environmental factors was much higher than using two samples to establish calibration models in the application environment. This proved the effectiveness of the developed method for reducing the difficulty and cost of calibration in the metallurgical processes. (C) 2021 Optical Society of America

引用

页码：5244 / 5247

页数：4

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