|
| Investigation and Health Risk Assessment of Soil Radioactivity Level in Tantalum-niobium Plant and Its Surroundings |
|
Received:September 14, 2021
Revised:September 14, 2021
Accepted:September 26, 2021
Published Online:November 19, 2021
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2021.12.017 |
| KeyWord:tantalum niobium factory; 238U; 232Th; 226Ra; 40K; pollution assessment; health risk assessment |
| Author | Institution |
| LI Guan-chao |
广东省核工业地质局辐射环境监测中心 |
| JIANG Wen-bo |
东华理工大学 |
| ZHONG Li-yan |
广东省核工业地质局辐射环境监测中心 |
| LIN Min |
广东省核工业地质局辐射环境监测中心 |
| LIN Jian |
广东省核工业地质局辐射环境监测中心 |
| GAO Bai |
东华理工大学 |
| SHI Tian-cheng |
东华理工大学核资源与环境国家重点试验室 |
|
| Hits: 1949 |
| Download times: 1977 |
| Abstract: |
| In order to find out degree of radioactive pollution in soil environment of plant and its surroundings, field investigation and statistical analysis were conducted on activity concentrations of radionuclides of 238U, 232Th, 226Ra, and 40K in surface soil around the plant (0~0.3 m) and in soil of 0~0.3, 0.3~0.6 and 0.6~0.9 m of heavy contamination points to find out their distribution characteristics in soil. The descriptive statistical results show that 238U has the highest activity concentration of 5 860 Bq/kg point in R1, while the other three nuclides (232Th, 226Ra, 40K) have the highest value of 930, 1 420, 367 Bq/kg in point R2. On the basis of statistical results, potential ecological risk index method and exposure assessment model were used to evaluate the pollution degree and harm degree to human health. The results show that point R1 and point R2 were strong ecological risk, point R3 was moderate potential ecological risk, and the other points were slight ecological hazard. There is no carcinogenic risk for children and adults through respiratory channels, while there is a non-carcinogenic risk for children through oral ingestion. There is possible non-carcinogenic risk for adults at point S1 and non-carcinogenic risk for others. |
| Close |
|
|
|