| 王新云,张显鹏,柳怡,等.石岛湾核电站周围食品中14C放射性水平及所致居民剂量分析[J].中华放射医学与防护杂志,2025,45(12):1211-1216.Wang Xinyun,Zhang Xianpeng,Liu Yi,et al.Analysis of 14C radioactivity levels in foods around Shidao Bay Nuclear Power Plant and the associated dose to residents[J].Chin J Radiol Med Prot,2025,45(12):1211-1216 |
| 石岛湾核电站周围食品中14C放射性水平及所致居民剂量分析 |
| Analysis of 14C radioactivity levels in foods around Shidao Bay Nuclear Power Plant and the associated dose to residents |
| 投稿时间：2025-04-01 |
| DOI：10.3760/cma.j.cn112271-20250401-00116 |
| 中文关键词: 核电站 食品 14C 放射性水平 待积有效剂量 |
| 英文关键词:Nuclear plant Food 14C Radioactivity level Committed effective dose |
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| 中文摘要: |
| 目的 了解石岛湾核电站周围6类14种食品中14C的放射性水平，结合居民年膳食摄入量，估算所致待积有效剂量。方法 于石岛湾核电站周围设置监测点，并以济南市为对照点分别在收获季采集谷类、薯类、肉类、乳类、蔬果类、海产类6类14种样品各20 kg。利用管式氚碳氧化燃烧装置氧化燃烧并分离样品中的碳，再利用吸收法结合CO2制备测量样品，用液体闪烁测量仪进行测量。用单因素方差分析统计方法分析不同样品中14C放射性水平趋势。参考居民膳食摄入量估算食品中14C所致待积有效剂量。结果 采集的谷类、薯类、肉类、乳类、蔬果类、海产类的14C放射性活度浓度范围分别为71.3~87.6、12.5~17.6、18.2~33.9、89.1~106.8、3.7~12.3、3.3~25.7 Bq/kg(鲜重)。石岛湾核电站周边不同食品种类中14C放射性水平不同，表现为：乳类＞谷类＞肉类＞薯类(海产类)＞蔬果类，所致居民待积有效剂量范围为2.09×10-6~2.58×10-3 mSv。结论 石岛湾核电站周围食品中14C放射性水平处于本底水平。 |
| 英文摘要: |
| Objective To understand the radioactivity levels of 14C in foods around the Shidao Bay Nuclear Power Plant (SNPP), and to estimate the committed effective dose in combination with the annual dietary intake of the local residents.Methods Monitoring points were set up around the SNPP with Jinan proper as the control point. Totally 14 samples of 6 categories of foods, including grains, tubers, meats, dairy products, fruits and vegetables, and seafood, were collected each with 20 kg respectively during the harvest season. The carbon in the sample was oxidized and separated by using a tubular tritium carbon oxidation combustion device. Then, the sample preparation was made by using the absorption method combined with CO2, and measured by using a liquid scintillation measuring instrument. The trend of 14C radioactivity levels in different samples was analyzed by one-way analysis of variance statistical method. And the committed effective dose was estimated in combination with the dietary intake of residents.Results The activity concentrations of 14C in the collected grains, tubers, meats, dairy products, fruits and vegetables, and seafood were 71.3-87.6, 12.5-17.6, 18.2-33.9, 89.1-106.8, 3.7-12.3, and 3.3-25.7 Bq/kg (fresh weight), respectively. The activity concentrations of 14C varied in different categories of foods vary arround SNPP in the decending order: dairy products > grains > meats > tubers (seafood) > fruits and vegetables. The doses to the local residents ranged from 2.09×10-6 to 2.58×10-3 mSv.Conclusion The radioactivity levels of 14C in the foods around the SNPP are at the background level. |
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