基于阴离子树脂和Ni树脂分离-液闪法对土壤中63Ni的分析测量研究

辐射防护 ›› 2025, Vol. 45 ›› Issue (5): 489-495.

基于阴离子树脂和Ni树脂分离-液闪法对土壤中⁶³Ni的分析测量研究

杨海兰^1,2, 保莉^1,2, 刘王东^1,2, 郭琛^1,2, 任哲敏^1,2, 杨有坤^1,2, 尹雅莉^1,2, 苟荣霞^1,2

1.中国辐射防护研究院,太原 030006;
2.生态环境部辐射环境与健康重点实验室,太原 030006

收稿日期:2024-12-03 出版日期:2025-09-20 发布日期:2026-01-14
作者简介:杨海兰(1972—),女,1995年毕业于南华大学核技术专业,2005年毕业于中国辐射防护研究院辐射防护与环境保护专业,研究员。E-mail:10338728@qq.com

Determination of ⁶³Ni in soil samples by liquid scintillation counting after the separation of anion resin and Ni resin

YANG Hailan^1,2 , BAO Li^1,2, LIU Wangdong^1,2, GUO Chen^1,2, REN Zhemin^1,2, YANG Youkun^1,2, YIN Yali^1,2, GOU Rongxia^1,2

1. China Institute for Radiation Protection, Taiyuan 030006;
2. Key Laboratory of Radiation Environment＆Health of the Ministry of Ecology and Environment,Taiyuan 030006

Received:2024-12-03 Online:2025-09-20 Published:2026-01-14

摘要/Abstract

摘要： 建立了一种基于阴离子树脂与Ni树脂联合分离纯化、液闪法测量土壤中⁶³Ni的分析方法。通过研磨、浸取、沉淀等前处理,利用树脂分离干扰核素,以原子吸收光谱仪测定化学回收率,再用液闪计数器测定⁶³Ni的活度浓度。实验结果表明,该方法化学回收率达76.1%±3.8%,探测限为(26.0±1.2)Bq/kg,对Fe、Co、Cs、Zn等常见干扰核素去污因子达到10²~10⁵。本方法优化了树脂分离流程与化学处理条件,回收率稳定,适用于核设施周围环境中的土壤⁶³Ni的测定。

关键词: 土壤, ⁶³Ni, Ni树脂, 液闪测量

Abstract: An analysis method for the determination of ⁶³Ni in soil samples using anion resin and Ni resin and liquid scintillation counter was developed. Through pretreatment processes such as grinding, leaching, and precipitation, interfering radionuclides are separated by using resin. The chemical recovery is determined by an atomic absorption spectrometer, and then the activity concentration of ⁶³Ni is measured by the liquid scintillation counter. The experimental results show that the chemical recovery of this method reaches 76.1%±3.8%, the detection limit is (26.0±1.2) Bq/kg, and the decontamination factors for common interfering radionuclides such as Fe, Co, Cs, and Zn reach 10² to 10⁵. Among them, this method innovatively optimizes the resin separation process and chemical treatment conditions. It is simple and reliable to operate, with a stable recovery rate. The method can be used for determination of ⁶³Ni in environmental soil samples arround nuclear facilities.

Key words: soil, ⁶³Ni, nickel resin, liquid scintillation counter

中图分类号:

TL75+1

杨海兰, 保莉, 刘王东, 郭琛, 任哲敏, 杨有坤, 尹雅莉, 苟荣霞. 基于阴离子树脂和Ni树脂分离-液闪法对土壤中⁶³Ni的分析测量研究[J]. 辐射防护, 2025, 45(5): 489-495.

YANG Hailan , BAO Li, LIU Wangdong, GUO Chen, REN Zhemin, YANG Youkun, YIN Yali, GOU Rongxia. Determination of ⁶³Ni in soil samples by liquid scintillation counting after the separation of anion resin and Ni resin[J]. RADIATION PROTECTION, 2025, 45(5): 489-495.

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基于阴离子树脂和Ni树脂分离-液闪法对土壤中⁶³Ni的分析测量研究

Determination of ⁶³Ni in soil samples by liquid scintillation counting after the separation of anion resin and Ni resin

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