广西旅游岩溶洞穴内氡及其子体浓度水平变化特征与影响因素浅析

doi:10.27045/j.1000-8187.202605006

摘要/Abstract

摘要： 选取广西老君洞、九龙洞和金伦洞3处旅游岩溶洞穴(均属溶洞类型),开展全年每月1次固定点位空气氡、氡子体、水中氡浓度及微气象参数同步监测,并估算特定暴露情景下的有效剂量。结果显示,空气氡、氡子体及水中氡水平三者均为九龙洞最高、金伦洞次之、老君洞最低,空气氡浓度年均值分别为211.42±194.73、104.97±52.33和13.74±8.33 Bq/m³,氡子体浓度年均值分别为135.07±124.94、66.31±37.88和8.93±8.22 Bq/m³,水中氡浓度年均值分别为3.060±3.141、0.745±0.329和0.338±0.076 Bq/L;九龙洞和金伦洞空气氡及氡子体浓度在6—9月相对较高,老君洞整体处于低值水平;九龙洞水中氡水平最高,与空气氡年内变化具有较清楚的对应关系;微气象参数分析显示,空气氡与气压的关系较明显,九龙洞和金伦洞空气氡均与气压呈负相关。剂量估算表明,游客2 h/次参观情景下有效剂量为0.000 17~0.002 5 mSv,100 h累积驻留情景下为0.008~0.125 mSv。结果可为旅游岩溶洞穴氡监测及辐射防护管理提供参考。

关键词: 岩溶洞穴, ²²²Rn, 氡子体, 水中氡, 有效剂量

Abstract: Three tourist karst caves in Guangxi,namely Laojun Cave,Jiulong Cave and Jinlun Cave,all of which are solution caves,were selected for year-round monthly fixed-site monitoring of airborne radon,radon progeny,radon in water and microclimatic parameters,and effective doses under specific exposure scenarios were estimated.The results showed that the levels of airborne radon,radon progeny and radon in cave water were highest in Jiulong Cave,followed by Jinlun Cave and Laojun Cave.The annual mean airborne radon concentrations were 211.42±194.73,104.97±52.33 and 13.74±8.33 Bq/m³,respectively; the annual mean radon progeny concentrations were 135.07±124.94,66.31±37.88 and 8.93±8.22 Bq/m³,respectively;and the annual mean radon concentrations in cave water were 3.060±3.141, 0.745±0.329 and 0.338±0.076 Bq/L,respectively.Airborne radon and radon progeny concentrations in Jiulong Cave and Jinlun Cave were relatively high from June to September,while Laojun Cave remained at a low level overall.Jiulong Cave had the highest radon level in cave water and showed a relatively clear correspondence with the monthly variation of airborne radon.The analysis of microclimatic parameters indicated that airborne radon was relatively clearly related to air pressure,and airborne radon was negatively correlated with air pressure in both Jiulong Cave and Jinlun Cave.Dose estimation indicated that the effective dose was 0.000 17-0.002 5 mSv for a typical 2 h tourist visit scenario and 0.008-0.125 mSv for a 100 h cumulative occupancy scenario.The results may provide a reference for radon environmental monitoring and radiation protection management in tourist karst caves.

Key words: karst cave, ²²²Rn, radon progeny, radon in water, effective dose

中图分类号:

X591

吴嘉诚, 吴国辉, 杨航, 罗己尊, 钟杰, 余扬. 广西旅游岩溶洞穴内氡及其子体浓度水平变化特征与影响因素浅析[J]. 辐射防护, 2026, 46(5): 427-436.

WU Jiacheng, WU Guohui, YANG Hang, LUO Jizun, ZHONG Jie, YU Yang. Variation characteristics and influencing factors of radon and radon progeny levels in tourist karst caves in Guangxi,China:A preliminary analysis[J]. RADIATION PROTECTION, 2026, 46(5): 427-436.

参考文献

[1] United Nations. Sources and effects of ionizing radiation: United Nations scientific committee on the effects of atomic radiation, UNSCEAR 2000 report to the general assembly, with scientific annexes, Volume I: sources[R]. New York: United Nations, 2000.
[2] World Health Organization. IARC Monographs on the evaluation of the carcinogenic risks to humans: man-made mineral fibres and radon[M]. Lyon: IARC, 1988.
[3] World Health Organization. WHO handbook on indoor radon: a public health perspective[M]. Geneva: World Health Organization, 2009.
[4] 吕惠进. 旅游溶洞内氡污染和从业人员的辐射防护[J]. 中国岩溶, 2002, 21(2): 137-139.
Lyu Huijin. Study on radon pollution in tourist karst caves and protection from the radiation[J]. Carsologica Sinica, 2002, 21(2): 137-139.
[5] 覃国秀, 杨庆华, 杨志辉. 旅游溶洞中氡的危害及防治[J]. 中国辐射卫生, 2013, 22(1): 63-65.
Qin Guoxiu, Yang Qinghua, Yang Zhihui. Hazards of radon in tourist caves and its prevention and control[J]. Chinese Journal of Radiological Health, 2013, 22(1): 63-65.
[6] Lecomte J, Solomon S, Takala J, et al. ICRP Publication 126: Radiological protection against radon exposure[R].Annals of the ICRP, 2014, 43(3): 5-73.
[7] 子涛, 杨晓霞, 石定芳. 喀斯特洞穴氡研究综述[J]. 中国岩溶, 2012, 31(1): 99-106.
Zi Tao, Yang Xiaoxia, Shi Dingfang. Review of the research on radon in Karst caves[J]. Carsologica Sinica, 2012, 31(1): 99-106.
[8] Sainz C, Rábago D, Celaya S, et al. Continuous monitoring of radon gas as a tool to understand air dynamics in the cave of Altamira (Cantabria, Spain)[J]. Science of the Total Environment, 2018, 624: 416-423.
[9] Fijałkowska-Lichwa L, Tyc A, Przylibski T A. Radon (²²²Rn) as a tracer of cave air exchange[J]. Air Quality,Atmosphere & Health, 2025, 18(3): 867-897.
[10] Dueñas C, Fernández M C, Cañete S, et al. Seasonal variations of radon and the radiation exposure levels in Nerja cave, Spain[J]. Radiation Measurements, 2011, 46(10): 1181-1186.
[11] Weng Xu, Luo Weijun, Wang Yanwei, et al. Spatiotemporal variations of radon concentration in the atmosphere of Zhijindong cave (China)[J]. Atmosphere, 2021, 12(8): 967.
[12] 张晓亮, 吕金波, 张磊, 等. 北京西山地区岩溶洞穴氡浓度研究[J]. 城市地质, 2017, 12(3): 26-30.
Zhang Xiaoliang, Lyu Jinbo, Zhang Lei, et al. Study on the radon concentration in karst caves in Beijing western hills[J]. Urban Geology, 2017, 12(3): 26-30.
[13] Šebela S, Briestenský M, Novak U. Radon concentration variability and microclimate controls in two Slovene show caves[J]. Environmental Earth Sciences, 2026, 85(7): 194.
[14] 卢伟. 洞穴氡来源、分布、测定及旅游评价[J]. 中国岩溶, 1998,17(3):251-253.
Lu Wei. Source, distribution and determination of cave radon[J]. Carsologica Sinica, 1998,17(3):251-253.
[15] Appleton J D. Radon in air and water[M]//Selinus O. Essentials of medical geology. Rev ed. Dordrecht: Springer, 2013: 239-277.
[16] 李彬, 林玉石, 徐胜友. 桂、湘某些岩溶洞穴氡及其子体分布特征的初步研究[J]. 中国岩溶, 1995(4): 345-351.
Li Bin, Lin Yushi, Xu Shengyou. A preliminary study of radon in the caves of Guangxi and Hunan, China[J]. Carsologica Sinica, 1995(4): 345-351.
[17] 李学彪. 广西岩溶城市氡气需重新认识[J]. 环境科学与管理, 2011, 36(2): 130-132.
Li Xuebiao. To be new understanding of the cities Karst radon gas in Guangxi Province[J]. Environmental Science and Management, 2011, 36(2): 130-132.
[18] Perrier F, Bourges F, Girault F, et al. Radon-222 signatures of atmospheric dynamics in the Pech Merle Painted cave, France: consequences for management and conservation[J]. Science of the Total Environment, 2024, 949: 174648.
[19] le Roux R, Bezuidenhout J, Nemangwele F. Radon concentrations in the Sudwala cave, South Africa[J]. Arabian Journal of Geosciences, 2023, 16(4): 250.
[20] Bezuidenhout J, le Roux R. Investigating the relationships between radon and the geology of the Sterkfontein cave[J]. Journal of Applied Geophysics, 2024, 230: 105522.
[21] Žauhar G, Trinajstić N, Gulan J R, et al. Radon levels in caves in Primorsko-goranska County, Croatia and assessment of the effective dose for visitors and tourist guides[J]. Radiation and Environmental Biophysics, 2026, 65(1): 161-174.
[22] 卢秀芳,赵新春,马一龙,等.南宁市地铁1号线各站段氡浓度水平以及地表γ剂量率水平研究[J].中国辐射卫生, 2019, 28(1): 72-75.
Lu Xiufang, Zhao Xinchun, Ma Yilong, et al. Study on the Radon concentration and the surface level of γ radiation dose rate in the stations of Nanning metro line[J]. Chinese Journal of Radiological Health, 2019, 28(1): 72-75.
[23] 刘长政,尚兵,武云云,等.南宁市医院室内氡浓度及γ辐射水平所致工作人员剂量[J].中国辐射卫生,2015, 24(3): 232-233.
Liu Changzheng, Shang Bing, Wu Yunyun, et al. The staff dose caused by indoor radon and γ radiation dose levels in hospitals of Nanning city[J]. Chinese Journal of Radiological Health, 2015, 24(3): 232-233.
[24] 郭芳,韦丽琼,姜光辉.广西典型岩溶水系统环境中²²²Rn的分布及指示意义[J].中国环境科学,2021,41(9): 4294-4299.
Guo Fang, Wei Liqiong, Jiang Guanghui. Characteristic of radon in typical karst water systems and its indicating significance in Guangxi, China[J]. China Environmental Science, 2021, 41(9): 4294-4299.
[25] GB/T 16146—2015 室内氡及其子体控制要求[S].