IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
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
Source PublicationTalanta
Volume187Pages:357-364
Subtype期刊论文
AbstractIn 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.
KeywordICP-MS/MS Collision/reaction cell NH3/He model Plutonium isotopes Environmental samples Isobaric interference of uranium
DOI10.1016/j.talanta.2018.05.051
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9653
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.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
Recommended Citation
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.
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