| 电解富集-液体闪烁计数法测量北极海水中氚活度 |
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| 引用本文： | 林峰,于涛,余雯,倪甲林,林莉.电解富集-液体闪烁计数法测量北极海水中氚活度[J].海洋学报(英文版),2020,39(9):73-77. |
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| 作者姓名： | 林峰 于涛 余雯 倪甲林 林莉 |
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| 作者单位： | 自然资源部第三海洋研究所, 海洋放射性技术与环境安全评估实验室, 厦门, 361005;自然资源部第三海洋研究所, 海洋生物与生态实验室, 厦门, 361005 |
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| 基金项目： | The project sponsored by the Scientific Research Foundation of Third Institute of Oceanography, Ministry of Natural Resources, under contract No. 2020012; the Join Project of Xiamen Marine Research and Development Institute under contract No. K191301. |
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| 摘 要： | A method of measuring the tritium in seawater based on electrolytic enrichment and ultra-low background liquid scintillation counting techniques was established. The different factors influencing the detection limit were studied, including the counting time, the electrolytic volume of the seawater samples, the selection of background water, scintillation solution and their ratio. After optimizing the parameters and electrolyzing 350 mL volume of samples, the detection limit of the method was as low as 0.10 Bq/L. In order to test the optimization of system for this method, of the 84 seawater samples collected from the Arctic Ocean we measured, 92% were above the detection limit(the activity of this samples ranged from 0.10 Bq/L to 1.44 Bq/L with an average of(0.30±0.24) Bq/L).In future research, if we need to accurately measure the tritium activity in samples, the volume of the electrolytic samples will be increased to further reduce the minimum detectable activity.
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| 关 键 词： | 氚 液闪 闪烁液 电解富集 |
| 收稿时间： | 2019/6/30 0:00:00 |
Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter |
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| Lin Feng,Yu Tao,Yu Wen,Ni Jialin,Lin Li.Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter[J].Acta Oceanologica Sinica,2020,39(9):73-77. |
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| Authors: | Lin Feng Yu Tao Yu Wen Ni Jialin Lin Li |
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| Institution: | 1.Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China2.Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China |
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| Abstract: | A method of measuring the tritium in seawater based on electrolytic enrichment and ultra-low background liquid scintillation counting techniques was established. The different factors influencing the detection limit were studied, including the counting time, the electrolytic volume of the seawater samples, the selection of background water, scintillation solution and their ratio. After optimizing the parameters and electrolyzing 350 mL volume of samples, the detection limit of the method was as low as 0.10 Bq/L. In order to test the optimization of system for this method, of the 84 seawater samples collected from the Arctic Ocean we measured, 92% were above the detection limit (the activity of this samples ranged from 0.10 Bq/L to 1.44 Bq/L with an average of (0.30±0.24) Bq/L). In future research, if we need to accurately measure the tritium activity in samples, the volume of the electrolytic samples will be increased to further reduce the minimum detectable activity. |
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| Keywords: | tritium liquid scintillation cocktails electrolytic enrichment |
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