Assessment of committed effective dose from ingestion of 137Cs in seafood from coastal areas of Zhejiang province
10.3760/cma.j.issn.0254-5098.2019.09.011
- VernacularTitle: 浙江省沿海地区海产品中137Cs的含量水平及其所致年待积有效剂量的评估
- Author:
Shunfei YU
1
;
Yiyao CAO
1
;
Zhiqiang XUAN
1
;
Ronghua ZHANG
1
;
Zhongjun LAI
1
;
Xinxing LI
1
;
Sanhu ZHAO
1
;
Yaoxian ZHAO
1
;
Qing ZHANG
2
Author Information
1. The Center for Disease Control and Prevention of Zhejiang Province, Hangzhou310053, China
2. Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, 100088 Beijing, China
- Publication Type:Journal Article
- Keywords:
Gamma spectrometer;
Sea products;
137Cs;
Annual committed effective dose
- From:
Chinese Journal of Radiological Medicine and Protection
2019;39(9):697-701
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the contents of radionuclide 137Cs in seafood from coastal areas of Zhejiang province, and to estimate the annual committed effective dose to population in different regions from ingestion of 137Cs in seafood.
Methods:Three representative monitoring areas were set on the coastaline of Zhejiang province, and the locally popular seafoods were selected as monitoring objectives. The contents of radionuclide 137Cs were detected using HPGe γ spectrometry. The committed effective doses were estimated based on monitoring results and consumption data on seafoods in Zhejiang.
Results:The detection ratio of 137Cs in seafood produced on coastal areas of Zhejiang province was estimated to be 35.3% (36/102). Specific activity detected ranged from 0.004 to 0.140 Bq/(kg, Wet). Committed effective doses from ingestion of 137Cs in one year to the population in island region, coastal region and inland region were 3.03×10-5, 1.63×10-5, 3.38×10-6 mSv, respectively, far lower than the world committed effective dose resulting from internal exposure.
Conclusions:At present, the content level of 137Cs in seafood produced on the coastal areas of Zhejiang province is much lower than the national standard limit, and the dose burden to the population is very minor with no health impact to the population.
