世界核地质科学2025，Vol.42Issue(3)：640-646,7.DOI:10.3969/j.issn.1672-0636.2025.03.014
微波等离子体线性离子阱质谱测定水中锆元素方法应用研究
Application of microwave plasma linear ion trap mass spectrometry method in the determination of zirconium in water
摘要
Abstract
Microwave plasma torch(MPT)is a new type of plasma excitation source developed by domestic research team.It is a soft ionization technology with atmospheric ionization characteristics and is mostly used for the analysis of organic matter.Compared with inductively coupled plasma(ICP)ionization sources,MPT has low ionization energy and is difficult to ionize the tested elements into metal ions,which limits its application in inorganic detection.In order to broaden the application range of MPT source,linear ion trap mass spectrometry(LTQ-MS)was used to establish a quantitative analysis method for zirconium,which was applied to environmental monitoring.The zirconium solution was introduced into the MPT-LTQ-MS experimental device,and the aerosol was produced by pneumatic atomization.After drying by concentrated sulfuric acid,the dried aerosol formed anions in the plasma flame generated by the microwave plasma moment,and was detected by LTQ-MS in the negative ion mode.The experimental results show that part of the excited zirconium ion can basically be confirmed to exist in the form of[ZrO(NO3)3]-.This composite anion can be used as the characteristic signal to detect zirconium in water samples,and can be quantitatively analyzed by the characteristic spectral peak of multi-stage mass spectrometry.The characteristic signal of m/z 292(90Zr)showed a good linear correlation with the concentration of zirconium in the concentration range of 5～100 μg·L-1(R2=0.998 8).The limit of detection(LOD)of the method was 2.6 μg·L-1,and the precision(RSD)was better than 8.9%.The content of zirconia in surface water was determined by MPT-LTQ-MS,ranging from 0.34 to 3.22 μg·L-1,and the recovery of standard addition was 94%to 105%.The results show that MPT-LTQ-MS can be used as a simple method for the determination of zirconium,and can be used in environmental monitoring and drinking water testing.关键词
微波等离子体炬/线性离子阱质谱/锆/负离子模式Key words
kilowatt microwave plasma torch/linear ion trap mass spectrometry/zirconium/negative mode分类
资源环境引用本文复制引用
张天睿,王洁,蒋涛,颜妍,刘春红,朱健铭,崔建勇..微波等离子体线性离子阱质谱测定水中锆元素方法应用研究[J].世界核地质科学,2025,42(3):640-646,7.基金项目
国家自然科学基金(编号:32460107)、湖南省重点专项(编号:2023NK2021)、湖南省教育厅科学研究项目(编号:23C0092)和江西省教育厅科学研究项目(编号:GJJ240802)核工业北京地质研究院院长青年科技创新基金项目(编号:测Q2007)联合资助 Supported by the National Natural Science Foundation of China(No.32460107),the Key Project of Hunan Province(No.2023NK2021),the Scientific Research Project of Hunan Provincial Department of Education(No.23C0092),the Scientific Research Project of Jiangxi Provincial Department of Education(No.GJJ240802),Youth Fund Project of Beijing Research Institute of Uranium Geology(No.测Q2007). （编号:32460107）
