Determination of ultra-low level plutonium isotopes (Pu-239,(240)pu) in environmental samples with high uranium | |
Xing, S (Xing, Shan)[ 1,3 ]; Zhang, WC (Zhang, Weichao)[ 1 ]; Qiao, JX (Qiao, Jixin)[ 2 ]; Hou, XL (Hou, Xiaolin)[ 1,2 ] | |
2018-09-01 | |
发表期刊 | Talanta |
卷号 | 187页码:357-364 |
文章类型 | 期刊论文 |
摘要 | In order to measure trace plutonium and its isotopes ratio (240Pu/239Pu) in environmental samples with a high uranium, an analytical method was developed using radiochemical separation for separation of plutonium from matrix and interfering elements including most of uranium and ICP-MS for measurement of plutonium isotopes. A novel measurement method was established for extensively removing the isobaric interference from uranium (238U1H and 238UH2+) and tailing of 238U, but significantly improving the measurement sensitivity of plutonium isotopes by employing NH3/He as collision/reaction cell gases and MS/MS system in the triple quadrupole ICP-MS instrument. The results show that removal efficiency of uranium interference was improved by more than 15 times, and the sensitivity of plutonium isotopes was increased by a factor of more than 3 compared to the conventional ICP-MS. The mechanism on the effective suppress of 238U interference for 239Pu measurement using NH3-He reaction gases was explored to be the formation of UNH+ and UNH2+ in the reactions of UH+ and U+ with NH3, while no reaction between NH3 and Pu+. The detection limits of this method were estimated to be 0.55 fg mL-1 for 239Pu, 0.09 fg mL−1 for 240Pu. The analytical precision and accuracy of the method for Pu isotopes concentration and 240Pu/239Pu atomic ratio were evaluated by analysis of sediment reference materials (IAEA-385 and IAEA-412) with different levels of plutonium and uranium. The developed method were successfully applied to determine 239Pu and 240Pu concentrations and 240Pu/239Pu atomic ratios in soil samples collected in coastal areas of eastern China. |
关键词 | Icp-ms/ms Collision/reaction Cell Nh3/he Model Plutonium Isotopes Environmental Samples Isobaric Interference Of Uranium |
DOI | 10.1016/j.talanta.2018.05.051 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/9561 |
专题 | 加速器质谱中心 |
通讯作者 | Hou, XL (Hou, Xiaolin)[ 1,2 ] |
作者单位 | 1.State Key Laboratory of Loess and Quaternary Geology, Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Xi’an AMS Center,Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China; 2.Technical University of Denmark, Center for Nuclear Technologies, Risø Campus, Roskilde, Denmark; 3.China Institute of Radiation Protection, Taiyuan, China |
推荐引用方式 GB/T 7714 | Xing, S ,Zhang, WC ,Qiao, JX ,et al. Determination of ultra-low level plutonium isotopes (Pu-239,(240)pu) in environmental samples with high uranium[J]. Talanta,2018,187:357-364. |
APA | Xing, S ,Zhang, WC ,Qiao, JX ,&Hou, XL .(2018).Determination of ultra-low level plutonium isotopes (Pu-239,(240)pu) in environmental samples with high uranium.Talanta,187,357-364. |
MLA | Xing, S ,et al."Determination of ultra-low level plutonium isotopes (Pu-239,(240)pu) in environmental samples with high uranium".Talanta 187(2018):357-364. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
1-s2.0-S003991401830(1281KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论