中国光学（中英文）2025，Vol.18Issue(2)：307-316,10.DOI:10.37188/CO.2024-0107
超疏水阵列辅助电火花增强激光诱导击穿光谱测定液相样品中的稀土元素
Determination of rare earth elements in liquid-phase samples by superhydrophobic array-assisted spark-discharge LIBS
摘要
Abstract
Rapid determination of rare earth elements(REEs)in liquid-phase samples is of great significance in the fields of ion-adsorption rare earth resource exploration and exploitation,quality control of extraction processes,recycling of rare earth resources,and nuclear industry wastewater monitoring.In order to reduce the detection limit of REEs in liquid samples by laser-induced breakdown spectroscopy(LIBS),superhydro-phobic array-assisted spark-enhanced laser-induced breakdown spectroscopy(SHA-SD-LIBS)was used in this study to determine the REEs in liquid-phase samples.Optimal experimental conditions were chosen to measure the REEs with the parameters of La Ⅱ 394.91 nm,Er 402.051 nm,Ce Ⅱ 418.66 nm,Nd Ⅱ 424.738 nm,Gd Ⅱ 443.063 nm,and Pr 492.46 nm as the characteristic spectral lines,and the calibra-tion curves were established for the quantitative analysis of the solutions of six rare earth elements(La,Er,Ce,Nd,Gd and Pr)with different concentrations.The results show that the fit coefficients R2 of the calibra-tion curves were above 0.99.The corresponding detection limits were 0.007 μg/mL,0.045 μg/mL,0.011 μg/mL,0.019 μg/mL,0.041 μg/mL,and 0.008 μg/mL.The proposed method is a simple,low-cost,and highly efficient way to improve the quality of the liquid-phase sample.Compared with the conventional LIBS method,the proposed method can significantly reduce the detection limit of REEs in liquid phase samples with simple sample preparation and low cost.It can serve as a basis for new rapid and accurate methods of measuring rare earth element types and contents in liquid phase samples.关键词
激光诱导击穿光谱(LIBS)/稀土元素(REEs)/电火花/超疏水/液相样品Key words
laser-induced breakdown spectroscopy(LIBS)/rare earth elements(REEs)/spark-discharge/su-perhydrophobicity/liquid-phase samples分类
电子信息工程引用本文复制引用
沈新建,罗兹循,吴建,李斌,刘燕德,陈楠..超疏水阵列辅助电火花增强激光诱导击穿光谱测定液相样品中的稀土元素[J].中国光学（中英文）,2025,18(2):307-316,10.基金项目
国家重点研发计划(No.2022YFD2001804,No.2023YFD2001301) （No.2022YFD2001804,No.2023YFD2001301）
国家自然科学基金(No.12304447) （No.12304447）
江西省自然科学基金(No.20242BAB20060) （No.20242BAB20060）
赣鄱俊才主要学科学术和技术带头人培养项目(No.20243BCE51173) Supported by National Key Research and Development Program of China(No.2022YFD2001804,No.2023YFD2001301) （No.20243BCE51173）
National Natural Science Foundation of China(No.12304447) （No.12304447）
Natural Science Founda-tion of Jiangxi Province(No.20242BAB20060) （No.20242BAB20060）
Training Program for Academic and Technical Leaders in Key Disciplines of Gan Poyang Talents(No.20243BCE51173) （No.20243BCE51173）
