Volume 42 Issue 8
Aug.  2023
Turn off MathJax
Article Contents
Chunqian Li, Meng Li, Guangquan Chen, Huaming Yu, Chenglun Zhang, Wen Liu, Jinjia Guo, Shibin Zhao, Lijun Song, Xiliang Cui, Ying Chai, Lu Cao, Diansheng Ji, Bochao Xu. In-situ detection equipment for radon-in-water: unattended operation and monthly investigations[J]. Acta Oceanologica Sinica, 2023, 42(8): 178-184. doi: 10.1007/s13131-023-2238-y
Citation: Chunqian Li, Meng Li, Guangquan Chen, Huaming Yu, Chenglun Zhang, Wen Liu, Jinjia Guo, Shibin Zhao, Lijun Song, Xiliang Cui, Ying Chai, Lu Cao, Diansheng Ji, Bochao Xu. In-situ detection equipment for radon-in-water: unattended operation and monthly investigations[J]. Acta Oceanologica Sinica, 2023, 42(8): 178-184. doi: 10.1007/s13131-023-2238-y

In-situ detection equipment for radon-in-water: unattended operation and monthly investigations

doi: 10.1007/s13131-023-2238-y
Funds:  The National Natural Science Foundation of China under contract Nos U22A20580 and 42130410; the Fundamental Research Funds for the Central Universities under contract No. 202341002; the Pilot Project for the Integration of Science, Education, and Industry under contract No. 2022PY069.
More Information
  • Corresponding author: E-mail: limeng@ouc.edu.cnxubc@ouc.edu.cn
  • Received Date: 2023-06-02
  • Accepted Date: 2023-08-14
  • Available Online: 2023-09-01
  • Publish Date: 2023-08-31
  • Radon is recognized as a powerful tracer of certain geophysical processes in marine and aquatic environments. In the past few decades, the instruments and methods for measuring radon concentration in water have been developed to some extent but still lack underwater in-situ measurements. Here we present an in-situ detection equipment for radon-in-water (pulsed ionization chamber (PIC)-radon) to measure dissolved radon in ocean and groundwater settings. The equipment has been successfully deployed in the Jiaozhou Bay in July 2022 and has achieved 14 d of unattended underwater in-situ observation. Then it was successfully placed in a groundwater monitoring well in the Laizhou Bay in November 2022 and monitored radon activities for over 30 d. The results showed that this instrument had a good indication of submarine groundwater discharge. The PIC-radon detector takes advantage of smaller size, lower power consumption, and is barely influenced by humidity, making it particularly suitable for long-term in-situ measurement, especially in harsh environments with limited human care or deployment spaces.
  • loading
  • Burnett W C, Aggarwal P K, Aureli A, et al. 2006. Quantifying submarine groundwater discharge in the coastal zone via multiple methods. Science of the Total Environment, 367(2−3): 498–543. doi: 10.1016/j.scitotenv.2006.05.009
    Burnett W C, Dulaiova H. 2003. Estimating the dynamics of groundwater input into the coastal zone via continuous radon-222 measurements. Journal of Environmental Radioactivity, 69(1−2): 21–35. doi: 10.1016/S0265-931X(03)00084-5
    Burnett W C, Kim G, Lane-Smith D. 2001. A continuous monitor for assessment of 222Rn in the coastal ocean. Journal of Radioanalytical and Nuclear Chemistry, 249(1): 167–172. doi: 10.1023/A:1013217821419
    Dulaiova H, Peterson R, Burnett W C, et al. 2005. A multi-detector continuous monitor for assessment of 222Rn in the coastal ocean. Journal of Radioanalytical and Nuclear Chemistry, 263(2): 361–363. doi: 10.1007/s10967-005-0063-8
    Gavrilyuk Y M, Gangapshev A M, Gezhaev A M, et al. 2015. High-resolution ion pulse ionization chamber with air filling for the 222Rn decays detection. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 801: 27–33
    Li Chunqian, Zhao Shibin, Zhang Chenglun, et al. 2022. Further refinements of a continuous radon monitor for surface ocean water measurements. Frontiers in Marine Science, 9: 1047126. doi: 10.3389/fmars.2022.1047126
    Liu Wen, Li Chunqian, Cai Pinghe, et al. 2022. Quantifying 224Ra/228Th disequilibrium in sediments via a pulsed ionization chamber (PIC). Marine Chemistry, 245: 104160. doi: 10.1016/j.marchem.2022.104160
    Null K A, Dimova N T, Knee K L, et al. 2012. Submarine groundwater discharge-derived nutrient loads to San Francisco Bay: implications to future ecosystem changes. Estuaries and Coasts, 35(5): 1299–1315. doi: 10.1007/s12237-012-9526-7
    Prakash R, Srinivasamoorthy K, Gopinath S, et al. 2018. Radon isotope assessment of submarine groundwater discharge (SGD) in Coleroon River Estuary, Tamil Nadu, India. Journal of Radioanalytical and Nuclear Chemistry, 317(1): 25–36. doi: 10.1007/s10967-018-5877-2
    Santos I R, Peterson R N, Eyre B D, et al. 2010. Significant lateral inputs of fresh groundwater into a stratified tropical estuary: evidence from radon and radium isotopes. Marine Chemistry, 121(1–4): 37–48. doi: 10.1016/j.marchem.2010.03.003
    Schmidt A, Schlueter M, Melles M, et al. 2008. Continuous and discrete on-site detection of radon-222 in ground- and surface waters by means of an extraction module. Applied Radiation and Isotopes, 66(12): 1939–1944. doi: 10.1016/j.apradiso.2008.05.005
    Seo J, Kim G. 2021. Rapid and precise measurements of radon in water using a pulsed ionization chamber. Limnology and Oceanography: Methods, 19(4): 245–252. doi: 10.1002/lom3.10419
    Studnička F, Štěpán J, Šlégr J. 2019. Low-cost radon detector with low-voltage air-ionization chamber. Sensors, 19(17): 3721. doi: 10.3390/s19173721
    Wang Xuejing, Li Hailong, Zhang Yan, et al. 2019. Submarine groundwater discharge revealed by 222Rn: comparison of two continuous on-site 222Rn-in-water measurement methods. Hydrogeology Journal, 27(5): 1879–1887. doi: 10.1007/s10040-019-01988-z
    Wang Qianqian, Li Hailong, Zhang Yan, et al. 2020. Submarine groundwater discharge and its implication for nutrient budgets in the western Bohai Bay, China. Journal of Environmental Radioactivity, 212: 106132. doi: 10.1016/j.jenvrad.2019.106132
    Xu Bochao, Burnett W C, Lane-Smith D, et al. 2010. A simple laboratory-based radon calibration system. Journal of Radioanalytical and Nuclear Chemistry, 283(2): 457–463. doi: 10.1007/s10967-009-0427-6
    Xu Bochao, Li Sanzhong, Burnett W C, et al. 2022. Radium-226 in the global ocean as a tracer of thermohaline circulation: synthesizing half a century of observations. Earth-Science Reviews, 226: 103956. doi: 10.1016/j.earscirev.2022.103956
    Zhao Shibin, Li Meng, Burnett W C, et al. 2022. In-situ radon-in-water detection for high resolution submarine groundwater discharge assessment. Frontiers in Marine Science, 9: 1001554. doi: 10.3389/fmars.2022.1001554
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Figures(9)

    Article Metrics

    Article views (99) PDF downloads(8) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return