光子学报 ›› 2018, Vol. 47 ›› Issue (8): 847010-0847010.doi: 10.3788/gzxb20184708.0847010

• “激光诱导击穿光谱”专题 • 上一篇    下一篇

远程激光诱导击穿光谱定量分析铝合金中的微量元素

张大成1, 冯中琦1, 李小刚2, 徐丽君2, 赵冬梅2, 朱小龙2, 马新文2   

  1. 1. 西安电子科技大学 物理与光电工程学院, 西安 710071;
    2. 中国科学院近代物理研究所, 兰州 730000
  • 收稿日期:2018-07-11 出版日期:2018-08-25 发布日期:2018-08-27
  • 通讯作者: 马新文(1966-),男,研究员,博士,主要研究方向为原子分子物理.Email:x.ma@impcas.ac.cn
  • 作者简介:张大成(1981-),男,副教授,博士,主要研究方向为激光技术与激光光谱.Email:dch.zhang@xidian.edu.cn
  • 基金资助:

    国家自然科学基金(No.91536103),中央高校基本科研业务费专项资金(No.XJS17025),高等学校学科创新引智计划(No.B17035)和中国科学院仪器功能开发项目(No.Y621040YQS)资助

Quantitative Analysis of Aluminium Alloy with Remote Laser-induced Breakdown Spectroscopy

ZHANG Da-cheng1, FENG Zhong-qi1, LI Xiao-gang2, XU Li-jun2, ZHAO Dong-mei2, ZHU Xiao-long2, MA Xin-wen2   

  1. 1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
    2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2018-07-11 Online:2018-08-25 Published:2018-08-27
  • Contact: 2018-08-27
  • Supported by:

    The National Natural Science Foundation of China (No.91536013), Fundamental Research Funds for the Central Universities (No. XJS17025), the 111 Project (No. B17035) and the projects of instrument function development of Chinese Academy of Sciences (No. Y621040YQS)

摘要:

基于纳秒Nd∶YAG激光器与卡塞格林式望远镜系统建立了一套25 m远距离激光诱导击穿光谱测量装置,实现了对金属靶材的远距离测量.在此基础上,利用铝合金标样开展了金属中微量元素远程定量分析,研究了不同距离下铝合金中Pb、Fe、Ni三种元素的定量分析标定曲线与探测极限.实验结果表明,在5 m至20 m三种测量距离下,Pb、Fe、Ni三种元素定标曲线的相关性系数均高于0.97;尽管激光诱导击穿光谱的光谱信号随测量距离增加快速下降,但是检测限随测量距离增加并无显著改变,均在50 ppm以下.

关键词: 定标曲线, 等离子体光谱, 元素分析, 远程测量, 激光诱导击穿光谱

Abstract:

A remote laser-induced breakdown spectroscopy device was constructed by combination a nanosecond Nd:YAG laser with a Cassegrain telescope. The distance of measurement can be up to 25 m. In addition, the quantitative analysis of micro elements, Pb, Fe and Ni, in the standard sample of aluminum alloy at different distances is studied. The experimental results show that the correlation coefficients of the calibration curves for Pb, Fe and Ni are all higher than 0.97 at the distances from 5 to 20 meters. Though the intensity of spectral signals decreased rapidly with distance, there was not significantly different of the limits of detection with the increase of measurement distance in our experiments.

Key words: Calibration curve, Remote detection, Plasma spectroscopy, Elements analysis, Laser-induced breakdown spectroscopy

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