| Lin Feng,Yu Tao,Yu Wen,Ni Jialin,Lin Li. 2020. Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter. Acta Oceanologica Sinica, 39(9):73－77 |
| Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter |
| 电解富集-液体闪烁计数法测量北极海水中氚活度 |
| Received:June 30, 2019 |
| DOI：10.1007/s13131-020-1647-4 |
| Key words:tritium liquid scintillation cocktails electrolytic enrichment |
| 中文关键词: 氚 液闪 闪烁液 电解富集 |
| 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. |
| Author Name | Affiliation | E-mail | | Lin Feng | Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | linfeng@tio.org.cn | | Yu Tao | Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | | | Yu Wen | Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | | | Ni Jialin | Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | | | Lin Li | 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. |
| 中文摘要: |
| 本文建立了基于电解富集和超低本底液闪测量北极海水中氚的方法。研究了影响检测限的各种因素，包括测量时间，样品电解体积，本底水和闪烁液的选择，以及二者的比例。在优化了这些参数后，电解350 ml样品，方法检测限达到0.10 Bq/L。为了测试该方法的系统优化效果，测量了84个采自北极的海水样品。其中92%的样品高于检测限（这部分样品活度变化范围0.10至1.44 Bq/L，平均值为0.30±0.24 Bq/L）。如果需要更加精确测量北极海水中氚的活度，需要进一步增加电解样品的体积以降低最低检测限。 |
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