Effect of the distance between focusing lens and target surface on quantitative analysis of Mn element in aluminum alloys by using filament-induced breakdown spectroscopy  

作　　者：Xue-Tong Lu Shang-Yong Zhao Xun Gao Kai-Min Guo Jing-Quan Lin 陆雪童;赵上勇;高勋;郭凯敏;林景全(School of Science,Changchun University of Science and Technology,Changchun 130012,China;School of Physical Science and Technology,Baotou Teachers'College,Baotou 014030,China)

机构地区：[1]School of Science,Changchun University of Science and Technology,Changchun 130012,China [2]School of Physical Science and Technology,Baotou Teachers'College,Baotou 014030,China

出　　处：《Chinese Physics B》2020年第12期276-280,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.61575030);the Natural Science Foundation of Jilin Province,China(Grant Nos.20180101283JC and 20200301042RQ);the Fund from the Department of Education of Jilin Province,China(Grant No.JJKH20190539KJ)。

摘　　要：Ultrafast laser filament-induced breakdown spectroscopy(FIBS)is a potential technique for quantitative analysis of trace elements.In this work,we investigate the effect of the distance between focusing lens and target surface on the FIBS quantitative analysis of Mn element in aluminum alloys,and several major parameters are calculated such as the linear correlation coefficient(R^2),limits of detection(LOD),relative standard deviation(RSD),and root-mean-square error of cross-validations(RMSECV).The results show that the quantitative analysis parameter values before and after filament position are different.The optimal value can be obtained at the filament region,the average values of total 23 positions of R^2,LOD,RSD,and RMAECV were 99.45%,1.41 mg/kg,7.12%,and 0.56%,respectively.Besides,the spatial distributions of quantitative analysis parameter values in filament region are noticeable,and this is essentially due to intensity clamping effect in a filament.

关 键 词：filament-induced breakdown spectroscopy limits of detection relative standard deviation root-mean-square error of cross-validations 

分 类 号：O657.3[理学—分析化学] TG146.21[理学—化学]