Study on background interference in the process of determination of the ultra‑low concentration of 226Ra in water by manganese fiber enrichment‑scintillation cell radon measurement method
Study on background interference in the process of determination of the ultra‑low concentration of 226Ra in water by manganese fiber enrichment‑scintillation cell radon measurement method
复制标题
锰纤维富集闪烁池氡测量法测定水中超低浓度226Ra过程中背景干扰研究
DOI：
10.1007/s10967-021-07678-z
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发表时间：
2021
影响因子：
1.6
通讯作者：
X.Zhang
中科院分区：
文献类型：
--
作者：
S.P.Zhu;Q.Tang;S.K.Qiu;C.Guo;J.C.Liu;X.Zhang
用海洋学中广泛使用的226Ra浓度测定方法对水样( 0.2Bq/m~3)中的超低浓度226Ra进行了测定。对测定过程中的各种背景源进行了测试，探讨了降低本底的措施。采取各种措施后，剩余空白本底之和降至12亿MBq以下。满足了测量浓度为 <； 0.2Bq/m~3的超低浓度镭溶液的要求。本文提出了进一步降低本底的可能性。
The determination of the ultra-low concentration of226Ra in water samples (< 0.2 Bq/m3) is carried out by using the226Ra concentration determination method widely used in oceanography. Various background sources in the determination process were tested and measures to reduce the background were explored. the sum of the residual blank background was reduced to less than 12 mBq after various measures were taken. The requirement of measuring the ultra-low concentration radium solution with concentration < 0.2 Bq/m3was met. In this paper, the possibility of further reducing the background is suggested.