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Measurement of 224Ra in water via pulsed ionization chamber (PIC) radon detector.
Xu, Haowei; Li, Chunqian; Liu, Pengxia; Liu, Wen; Zhao, Shibin; Dimova, Natasha T; Cui, Xiliang; Song, Lijun; Zhu, Tianyi; Lian, Ergang; Xia, Chun; Xue, Yanming; Li, Jian; Xu, Bochao.
Afiliación
  • Xu H; Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Mari
  • Li C; Faculty of Information Science and Engineering, Ocean University of China, Qingdao, 266100, China; Ocean Observation and Exploration Research Department, Laoshan National Laboratory, Qingdao, 266200, China. Electronic address: cqli@qnlm.ac.
  • Liu P; Research Center for Monitoring and Environmental Sciences, Taihu Basin & East China Sea Ecological Environment Supervision and Administration Authority, Ministry of Ecology and Environment, Shanghai, 200120, China. Electronic address: liupengxia@126.com.
  • Liu W; Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Mari
  • Zhao S; Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Mari
  • Dimova NT; Department of Geological Sciences, College of Arts and Sciences, University of Alabama, Tuscaloosa, 35487, USA.
  • Cui X; Ocean Observation and Exploration Research Department, Laoshan National Laboratory, Qingdao, 266200, China.
  • Song L; Qingdao Ekman Technology Co., LTD, Qingdao, 266071, China.
  • Zhu T; Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Mari
  • Lian E; Research Center for Monitoring and Environmental Sciences, Taihu Basin & East China Sea Ecological Environment Supervision and Administration Authority, Ministry of Ecology and Environment, Shanghai, 200120, China; State Key Laboratory of Marine Geology, Tongji University, Shanghai, 200092, Chin
  • Xia C; Qingdao Institute of Measurement Technology, Qingdao, 266101, China.
  • Xue Y; Qingdao Institute of Measurement Technology, Qingdao, 266101, China.
  • Li J; Qingdao Institute of Measurement Technology, Qingdao, 266101, China.
  • Xu B; Frontiers Science Center for Deep Ocean Multispheres and Earth System, and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Mari
J Environ Radioact ; 278: 107488, 2024 Sep.
Article en En | MEDLINE | ID: mdl-38968644
ABSTRACT
224Ra (t1/2 = 3.6 d) has been widely used as a tracer in environmental water research. Here, we present a new method for measuring 224Ra in natural waters using a pulsed ionization chamber (PIC)-based radon detector. This method is based on the measurement of the 224Ra daughter isotope 220Rn (thoron) after reaching secular equilibrium within 7 min. Radium isotopes are concentrated on ''Mn-fibers'' before measurement of 220Rn, which can be distinguished from 222Rn by the difference in their half-lives. The measurement efficiency of the method is 0.20 ± 0.01 cps/Bq at an optimum airflow rate of 1.0 L/min and a water/Mn-fiber weight ratio of 1.0. Results from natural water samples obtained by this method agree well with analysis via RaDeCC, an established technique for 224Ra assessments. Since the PIC system is lighter compared to RaDeCC, easier to operate, and does not require the usage of helium carrier gas and desiccant, this method is recommended for in-situ 224Ra measurement in long-term fieldwork with limited logistical support.
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Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Contaminantes Radiactivos del Agua / Monitoreo de Radiación / Radón Idioma: En Revista: J Environ Radioact / J. environ. radioact / Journal of environmental radioactivity Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article
Texto completo
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Texto completo: 1 Bases de datos: MEDLINE Asunto principal: Contaminantes Radiactivos del Agua / Monitoreo de Radiación / Radón Idioma: En Revista: J Environ Radioact / J. environ. radioact / Journal of environmental radioactivity Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article