某稀土冶炼厂及周边土壤放射性水平调查及风险评估

Abstract

Abstract: In order to find out the range and harm of radioactive contamination in soil of a rare earth refining factory and its surrounding soil, the mass activity concentrations of ²³⁸U, ²³²Th and ²²⁶Ra in soil of a rare earth refining factory and its surrounding soil were investigated. The radionuclide contamination of soil in the study area was evaluated by geological accumulation index method, single factor pollution index method and Nemerow comprehensive pollution index method. The health risk assessment model of US EPA was used for risk calculation. The results showed that the mass activity concentration ranges of ²³⁸U, ²³²Th and ²²⁶Ra were 20.9-92.6 Bq/kg, 25.1-565.5 Bq/kg, 17.3-83.1 Bq/kg, respectively. The geological accumulation index method showed that the two sampling points downstream of the outlet and west side of the plant were mono-nuclide pollution. The single factor pollution index method and Nemerow comprehensive pollution index method showed that the comprehensive pollution of soil at each site reached mild pollution. Health risk assessment showed that the maximum risk values caused by ²³⁸U, ²³²Th and ²²⁶Ra were all less than 10^-6, and all were within the acceptable range. The main exposure routes were ingestion routes, and the greatest risk came from ²³²Th. The investigation shows that the health risk of ²³⁸U, ²³²Th and ²²⁶Ra in a rare earth refining factory and its surrounding soil is within the acceptable range.

Key words: soil, radioactive contamination, radionuclide, risk assessment

CLC Number:

X822.5

ZHU Xiaojiao, XIAO Bifu, GU Hong, LV Yingfu, LIU Pei, ZHOU Wei, LI Yuandong, TANG Hui. Investigation and risk assessment of soil radioactivity levels at a rare earth refining factory and surrending area[J].RADIATION PROTECTION, 2024, 44(3): 233-239.

References

[1] 魏广芝,赵良仁,徐乐昌,等.某稀土冶炼厂放射性污染源项调查[J].铀矿冶,2012,31(3):146-151.
WEI G Z,ZHAO L R,XU L C,et al. A survey of radioactive pollution sources for a rare earth smelting plant[J]. Uranium Mining and Metallurgy,2012,31(3):146-151.
[2] 林明媚,彭崇.广西某稀土开发利用企业冶炼中天然放射性核素活度浓度分布调查[J].广东化工,2021,48(11):50-51.
LIN M M,PENG C.Investigation on the activity concentration distribution of natural radionuclides in the smelting of a rare earth development and utilization enterprise in Guangxi[J].Guangdong Chemical Industry,2021,48(11):50-51.
[3] 李冠超,史天成,杨波,等.某稀土冶炼厂及周边环境土壤中放射性核素分布特征与风险评价[J].有色金属(冶炼部分),2021(8):119-126.
LI G C, SHI T C,YANG B,et al.Distribution characteristics and risk assessment of radionuclide in soils of a rare earth smelter and its surrounding environment[J].Nonferrous Metals(Extractive Metallurgy),2021(8):119-126.
[4] 孟庆华,马永忠,王欢,等.2017—2018年北京地区土壤的放射性水平监测与分析[J].中华放射医学与防护杂志,2020,40(9):702-706.
MENG Q H,MA Y Z, WANG H, et al.Monitoring and analysis of radioactivity in soils in Beijing during 2017-2018[J].Chin J Radiol Med Prot,2020,40(9):702-706.
[5] 中国疾病预防控制中心辐射防护与核安全医学所,新疆维吾尔自治区疾病预防控制中心,包钢集团公司劳动卫生职业疾病防治研究所.土壤中放射性核素的γ能谱分析方法:GB/T 11743—2013[S].北京:中国标准出版社,2013.
[6] 杨艳,吴攀,李学先,等.贵州织金县贯城河上游煤矿区富硒高镉土壤重金属的分布特征及生态风险评价[J].生态学杂志,2018,37(6):1797-1806.
YANG Y,WU P,LI X X,et al.Distribution and ecological risk assessment of heavy metals in selenium-rich soil with high cadmium content of coal mining area in upper reaches of Guancheng River in Zhijin County, Guizhou[J].Chinese Journal of Ecology,2018,37(6):1797-1806.
[7] Muller G.Index of geoaccumulation in sediments of the Hine River[J].Geochemical Journal,1969,2:108-118.
[8] 郭笑笑,刘丛强,朱兆洲,等.土壤重金属污染评价方法[J].生态学杂志,2011,30(5):889-896.
GUO X X,LIU C Q,ZHU Z Z,et al.Evaluation methods for soil heavy metals contamination[J].Chinese Journal of Ecology,2011,30(5):889-896.
[9] 李战国,朱勇兵,李军,等.²²⁶Ra污染场地调查与健康风险评估[J].安全与环境学报,2020,20(6):2408-2415.
LI Z G,ZHU Y B,LI J,et al.Investigation and health risk assess-ment of ²²⁶Ra in deserted contaminated site[J].Journal of Safety and Environment,2020,20(6):2408-2415.
[10] 章蔷.污染场地调查及健康风险评估的研究[D].南京师范大学,2013.
[11] U.S.Environmental Protection Agency.RAIS risk exposure models for radionuclides user-s guide [EB/OL].[2022-12-5].http://rais.ornl.gov/tools/rais_rad_risk_guide.html.
[12] OAKRIDGE National Laboratory.Area correction factors for contaminated soil for use in risk and dose assessment models[EB/OL].[2022-12-5].http://rais.ornl.gov/tools/ACF_FINAL.pdf.2014.

[1]	XU Bin, BI Chaowen, WANG Yan, ZHU Jie, GU Hong, LIU Pei, LI Yuandong, TANG Hui. Landfill disposal of very low level soil waste containing ⁶⁰Co [J]. RADIATION PROTECTION, 2024, 44(3): 298-303.
[2]	DU Juan, JI Dong, LIU Xiaochao, HOU Tiegang. Characterization relationship between gamma dose rate and radionuclide activity in uranium-contaminated soil [J]. RADIATION PROTECTION, 2024, 44(2): 160-166.
[3]	DU Yunwu, DENG Xiaoqin, BI Chaowen, ZHU Jie, WANG Liang, ZENG Yi, GUO Xuying, WANG Yan, WANG Qian. Influence and correction of sample mass thickness variation for total alpha radioactivity measurement in water [J]. RADIATION PROTECTION, 2023, 43(6): 566-575.
[4]	WANG Shaolin, CHEN Ling, BAI Xiangfei, TUO Fei, CHEN Faguo, CAO Zhonggang. Investigation and analysis of natural radionuclides content in coal used for power generation in China [J]. RADIATION PROTECTION, 2023, 43(5): 478-484.
[5]	LI Lifan, WEN Fuping, HU Xiang, LI Huiping. Evaluation of ¹³⁷Cs radioactivity level and the induced resident external exposure dose in soils surrounding a nuclear facility [J]. RADIATION PROTECTION, 2023, 43(4): 318-324.
[6]	CAO Longsheng, LIAO Yuhang, LV Anbiao, ZHOU Ying, ZHOU Feng. Study on monitoring method of automatic continuous sampling and analysis system for ultra-large flow aerosol [J]. RADIATION PROTECTION, 2023, 43(3): 235-242.
[7]	LIANG Kaiqi, HONG Changshou, CHEN Zhibin, ZHAO Tianji, WANG Hong, LI Xiangyang, LIU Yong. Mechanisms and factors affecting radon exhalation from surface of uranium mill tailing pond with compacted soil cover: An overview [J]. RADIATION PROTECTION, 2023, 43(2): 97-113.
[8]	YIN Wangming, YOU Chengmao, MEI Xiangjie, ZHOU Kebo. Application study of radioactive decay corrections to the analysis of gaseous effluents monitoring samples from nuclear power plant [J]. RADIATION PROTECTION, 2023, 43(1): 55-63.
[9]	ZHENG Cunde, LIU Qingkuan, DONG Guochao, SUN Yu. Study on background value of soil natural radionuclides in Dandong area [J]. RADIATION PROTECTION, 2022, 42(6): 579-584.
[10]	WANG Hong, HE Runcheng, LIU Yong, HONG Changshou, LI Xiangyang, LUO Mengke, WANG Jianmin. Experimental study on the radon exhalation from the soil overburden of uranium tailing pond under prefabricated fractures [J]. RADIATION PROTECTION, 2022, 42(6): 603-610.
[11]	JIANG Dong, FANG Chunming, LU Di, DU Yaofang, WANG Haitao, ZHAO Yuling, SHANG Di. Rapid determination of lead-210 in soil sample using solid phase extraction and liquid scintillation counting method [J]. RADIATION PROTECTION, 2022, 42(3): 201-207.
[12]	DONG Li, WANG Mengxi, LIU Xinjian, LIU Senlin. Application of emergency evacuation simulation in the optimization of road evacuation scheme for nuclear power plant [J]. RADIATION PROTECTION, 2022, 42(2): 161-176.
[13]	WU Qingbiao, ZHUANG Sixuan. Monitoring and evaluation of air activation in China spallation neutron source [J]. RADIATION PROTECTION, 2021, 41(S1): 29-35.
[14]	ZHANG Xue, HU Jihua, SHI Xiaowen, WANG Xiaoyuan. Study on vadose-saturation zone coupling simulation of radionuclide migration [J]. RADIATION PROTECTION, 2021, 41(6): 514-522.
[15]	MAO Yucai, WANG Yunxiang, ZHANG Lei, GUO Qiuju. Study on a humidity controllable radon chamber system based on soil-radon [J]. RADIATION PROTECTION, 2020, 40(5): 402-407.

Investigation and risk assessment of soil radioactivity levels at a rare earth refining factory and surrending area

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 10