量子电子学报 ›› 2021, Vol. 38 ›› Issue (3): 272-280.doi: 10.3969/j.issn.1007-5461.2021.03.002

• 光谱 • 上一篇    下一篇

基于激光诱导击穿光谱技术的宣纸鉴别方法研究

方莲, 钱晓陆, 吴本科, 丁志鹏∗, 王雅萍   

  1. 合肥工业大学宣城校区, 安徽宣城242000
  • 收稿日期:2021-01-11 修回日期:2021-03-09 出版日期:2021-05-28 发布日期:2021-05-28
  • 通讯作者: 2020820057@hfut.edu.cn E-mail:a0608091@126.com
  • 作者简介:方莲( 1986 - ), 女, 安徽安庆人, 助理实验师, 主要从事激光诱导击穿光谱检测方面的研究。E-mail: 2020820035@hfut.edu.cn
  • 基金资助:
    Supported by National Natural Science Foundation of China (国家自然科学基金, 21603049)

Identification method of Xuan paper based on laser-induced breakdown spectroscopy technique

FANG Lian, QIAN Xiaolu, WU Benke, DING Zhipeng∗, WANG Yaping   

  1. Xuancheng Campus, Hefei University of Technology, Xuancheng 242000, China
  • Received:2021-01-11 Revised:2021-03-09 Published:2021-05-28 Online:2021-05-28

摘要: 搭建了用于宣纸成分分析的激光诱导击穿光谱(LIBS) 实验装置, 获得了宣纸及普通书画纸的LIBS 谱线。 结合NIST 数据库分析了样品中的金属元素成分, 并完成光谱标定。光谱特征分析表明: 所有样品都含有Ca 元素, 但普通书画纸Ca 元素特征峰数量偏少且强度偏低, 极易区别; 其他宣纸样品, Ca 元素在不同波段的光谱强度存在 显著差异。根据5 种样品纸Ca 元素的光谱强度分布规律将光谱分成3 个区段进行分析, 提出了依据Ca 元素的3 个波段相对强度的三维区分图法, 通过测试品元素光谱强度的实际落点与三维图中实验落点的比照, 可快速、准 确地实现宣纸的鉴别和分类。

关键词: 光谱学, 鉴别分类, 激光诱导击穿光谱技术, 宣纸, 金属元素

Abstract: A laser-induced breakdown spectroscopy (LIBS) experimental device for Xuan paper composition analysis is set up, and LIBS spectral lines of Xuan paper and ordinary calligraphy and painting paper are obtained. Combined with NIST database, the composition of metal elements in the sample is analyzed, and the element calibration of spectrum is completed. According to the spectral characteristics of the sample paper, it is found that all samples contain Ca element. However, the number of characteristic peaks of Ca element in ordinary calligraphy and painting paper is relatively small and the corresponding spectral intensity is generally low, which is easy to distinguish. For Xuan paper samples, the spectral intensity of Ca element in different bands is significantly different. According to the distribution law for Ca element in five sample papers, the spectrum is divided into three sections for analysis, and a three-dimensional differentiation map method based on the relative intensity of the three bands of the Ca element is proposed. Based on the comparison of the drop point of the spectral intensity between the tested samples and the established three-dimensional map, the identification and classification of Xuan paper can be realized quickly and accurately.

Key words: spectroscopy, identification and classification, laser-induced breakdown spectroscopy, Xuan paper, metallic element

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