Measuring Th and U contaminants in PPO to 10-14 g/g level via acid extraction
文献类型：期刊论文
| 作者 | Liu, Meng-Chao ; Ding, Ya-Yun; Wen, Liang-Jian; Cao, Jun; Zhang, Zhi-Yong
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| 刊名 | Nuclear Instruments and Methods in Physics Research A
 |
| 出版日期 | 2022 |
| 卷号 | 1041页码:167323 |
| 关键词 | Low radioactivity Scintillation fluor Neutrino experiment PPO ICP-MS |
| ISSN号 | 0168-9002 |
| DOI | 10.1016/j.nima.2022.167323 |
| 文献子类 | Article |
| 英文摘要 | A reliable and precise method for determining the thorium (Th) and uranium (U) contaminants in 2,5-diphenyloxazole (PPO) to 10 ppq level was developed for Jiangmen Underground Neutrino Observatory (JUNO). The Th and U contaminants were separated from PPO by acid extraction and measured by inductively coupled plasma mass spectrometry (ICP-MS). The experimental conditions were optimized to improve extraction efficiencies and eliminate the interferences during the ICP-MS measurements. The 229Th and 233U isotopes were used as tracer, and nearly 100% recovery efficiencies of 229Th and 233U were obtained in both the spiked PPO samples and blanks. The method detection limits with 99% confidence level for 232Th and 238U in PPO were 3 . 3 × 10-14 g/g and 4 . 0 × 10-14 g/g, respectively. The measurements were consistent with the Th and U results obtained from a vaporization method. The method developed in this work can be extended to other fluors with minor adjustments. |
| 电子版国际标准刊号 | 1872-9576 |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/300017]  |
| 专题 | 高能物理研究所_实验物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu, Meng-Chao,Ding, Ya-Yun,Wen, Liang-Jian,et al. Measuring Th and U contaminants in PPO to 10-14 g/g level via acid extraction[J]. Nuclear Instruments and Methods in Physics Research A,2022,1041:167323. |
| APA | Liu, Meng-Chao,Ding, Ya-Yun,Wen, Liang-Jian,Cao, Jun,&Zhang, Zhi-Yong.(2022).Measuring Th and U contaminants in PPO to 10-14 g/g level via acid extraction.Nuclear Instruments and Methods in Physics Research A,1041,167323. |
| MLA | Liu, Meng-Chao,et al."Measuring Th and U contaminants in PPO to 10-14 g/g level via acid extraction".Nuclear Instruments and Methods in Physics Research A 1041(2022):167323. |
入库方式： OAI收割
来源：高能物理研究所
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