| Xu Ying,Yin Liangliang,Chen Fei,Shao Xianzhang,Kong Xiangyin,Ji Yanqin.HR-ICP-MS method for the determination of ultratrace uranium in multi-stage atmospheric particles[J].Chinese Journal of Radiological Medicine and Protection,2017,37(3):212-215 |
| HR-ICP-MS method for the determination of ultratrace uranium in multi-stage atmospheric particles |
| Received:November 11, 2016 |
| DOI：10.3760/cma.j.issn.0254-5098.2017.03.010 |
| KeyWords:Atmospheric particles High resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) Size distribution Uranium |
| FundProject:科技部基础专项（2014YF211000） |
| Author Name | Affiliation | E-mail | | Xu Ying | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Yin Liangliang | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Chen Fei | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Shao Xianzhang | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Kong Xiangyin | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Ji Yanqin | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | jiyanqin@nirp.cn |
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| Abstract:: |
| Objective To establish an effective and reliable method for analysis of ultratrace uranium in multi-stage atmospheric particles providing the monitoring and evaluation of the content of radioactive uranium in the atmosphere.Methods A large volume six-stage-impactor sampler of atmosphere particles was used to collect aerosol samples, and ultratrace uranium in particles was digested using microwave and measured by inductively coupled plasma mass spectrometry. The filter material, digestion conditions and microwave digestion system had been optimized. Results The background of uranium level on the cellulose filter was the lowest, and the samples were digested by using HNO3-HCl (aqua regia)-H2O2 solution. Reference material SRM2783 was used to validate the accuracy of the method, and the relative error of the 238U was 7%, The detection limit of the method was 2×10-4 ng/m3. The aerosol actual samples were analyzed using the established method. The mass concentrations of uranium in PM2.5 was in the range of 0.023-0.065 ng/m3. Conclusions The established method was effective and reliable to monitor the concentration level of ultratrace uranium in multi-stage atmospheric particles. |
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