Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter

Feng Lin; Tao Yu; Wen Yu; Jialin Ni; Li Lin

doi:10.1007/s13131-020-1647-4

Volume 39 Issue 9

Sep. 2020

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Article Navigation > Acta Oceanologica Sinica > 2020 > 39(9): 73-77

Feng Lin, Tao Yu, Wen Yu, Jialin Ni, Li Lin. Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter[J]. Acta Oceanologica Sinica, 2020, 39(9): 73-77. doi: 10.1007/s13131-020-1647-4

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Feng Lin, Tao Yu, Wen Yu, Jialin Ni, Li Lin. Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter[J]. Acta Oceanologica Sinica, 2020, 39(9): 73-77. doi: 10.1007/s13131-020-1647-4

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Electrolytic enrichment method for tritium determination in the Arctic Ocean using liquid scintillation counter

doi: 10.1007/s13131-020-1647-4

Feng Lin^{1
,
,},
Tao Yu¹,
Wen Yu¹,
Jialin Ni¹,
Li Lin²

1.
Laboratory of Marine Isotopic Technology and Environmental Risk Assessment, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
2.
Laboratory of Marine Biology and Ecology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China

Funds: 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.

More Information

Corresponding author: E-mail: linfeng@tio.org.cn
Received Date: 2019-06-30
Accepted Date: 2020-02-22

Available Online: 2020-12-28

Publish Date: 2020-09-25

Abstract

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.
- tritium,
- liquid scintillation,
- cocktails,
- electrolytic enrichment

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References(23)

References

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