摘要
研究了广东地区受铀矿污染的土壤中生长的芥菜、大白菜、苋菜的根、茎、叶中^(238)U、^(226)Ra、^(210)Pb、^(210)Po的含量分布情况,其中根为主要富集部位;3种蔬菜的转移系数皆在10-3~10-2水平,芥菜的238 U和226 Ra的转移系数之间存在相互影响,大白菜的^(210)Pb和^(210)Po的转移系数之间也存在相互影响关系;对公众每食入1 kg蔬菜所产生的待积有效剂量做了初步估算,238 U贡献的剂量为0.001~0.105μSv,226 Ra为0.004~0.576μSv,^(210)Pb为0.019~0.646μSv,^(210)Po为0.010~1.30μSv。
The distribution and content of ^(238)U,226 Ra,^(210)Pb and ^(210)Po in roots,stems and leaves of Brassica juncea,Brassica pekinensis and Amaranthus tricolor grown in the uranium contaminated soil of Guangdong district were analyzed.The results showed that the roots were the main enrichment part.The transfer coefficients of the three vegetables were all at the level of 10-3-10-2.The transfer coefficients of ^(238) Uand ^(226)Ra of Brassica juncea were correlated while the transfer coefficients of ^(210)Pb and^(210)Po of Brassica pekinensis were also correlated.According to the preliminary estimation of committed equivalent dose for public ingestion of 1 kg those vegetables,the dose of ^(238) Uranged from 0.001 to 0.105μSv,226 Ra ranged from 0.004 to 0.576μSv,^(210)Pb ranged from 0.019 to 0.646μSv,^(210)Pb ranged from 0.019 to 0.646μSv.
作者
梁国帅
陈柏迪
陈志东
邓飞
LIANG Guoshuai;CHEN Baidi;CHEN Zhidong;DENG Fei(Guangdong Environmental Radiation Monitoring Center,Guangzhou 510300)
出处
《辐射防护》
CAS
CSCD
北大核心
2021年第3期229-236,共8页
Radiation Protection
