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Comparison of Radon and Thoron Concentration Measuring Systems Among Asian Countries

Author

Listed:
  • Miroslaw Janik

    (Center for Advanced Radiation Medicine, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba 263-8555, Japan)

  • Shinji Tokonami

    (Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki 036-8560, Japan)

  • Kazuki Iwaoka

    (Center for Advanced Radiation Medicine, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba 263-8555, Japan)

  • Naregundi Karunakara

    (Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India)

  • Shetty Trilochana

    (Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India)

  • Mandya Purushotham Mohan

    (Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India)

  • Sudeep Kumara

    (Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India)

  • Indaje Yashodhara

    (Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India)

  • Weihai Zhuo

    (Institute of Radiation Medicine, Fudan University, Shanghai 200032, China)

  • Chao Zhao

    (Shanghai Institute of Measurement and Testing Technology (SIMT), Shanghai 201203, China)

  • Fangdong Tang

    (Shanghai Institute of Measurement and Testing Technology (SIMT), Shanghai 201203, China)

  • Linfeng He

    (Shanghai Institute of Measurement and Testing Technology (SIMT), Shanghai 201203, China)

  • Supitcha Chanyotha

    (Natural Radiation Survey and Analysis Research Unit (NRSA-RU), Chulalongkorn University, Bangkok 10330, Thailand)

  • Chutima Kranrod

    (Natural Radiation Survey and Analysis Research Unit (NRSA-RU), Chulalongkorn University, Bangkok 10330, Thailand)

  • Darwish Al-Azmi

    (Department of Applied Sciences, College of Technological Studies, Public Authority for Applied Education and Training, Shuwaikh, PO Box 42325, Kuwait City 70654, Kuwait)

  • Osamu Kurihara

    (Center for Advanced Radiation Medicine, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba 263-8555, Japan)

Abstract

Comparison is an important role in the quality control and quality assurance for any measuring system. Due to the future legal regulations regarding radon levels in the air, maintaining the system quality and harmonization of results as well as validation of radon and thoron measuring systems is important. The aim of this work is to validate the degrees of equivalence and measurement precisions of the existing five radon and four thoron measuring systems located in four Asian countries (China, India, Japan and Thailand) through comparison experiment. In this project, comparison experiment was performed in order to derive the ratio between assigned value obtained from one transfer measurement device for radon and one transfer measurement device for thoron belongs to National Institutes for Quantum and Radiological Science and Technology and participants’ value from their measuring instrument. As a result, the ratio value associated with measurement uncertainty was derived for each activity concentration. Finally, measurement bias and degrees of equivalence between the assigned values and values of measurement quantity from participants’ measuring instruments were statistically analysed and presented.

Suggested Citation

  • Miroslaw Janik & Shinji Tokonami & Kazuki Iwaoka & Naregundi Karunakara & Shetty Trilochana & Mandya Purushotham Mohan & Sudeep Kumara & Indaje Yashodhara & Weihai Zhuo & Chao Zhao & Fangdong Tang & L, 2019. "Comparison of Radon and Thoron Concentration Measuring Systems Among Asian Countries," IJERPH, MDPI, vol. 16(24), pages 1-11, December.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:24:p:5019-:d:296113
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    Cited by:

    1. Yasutaka Omori & Yuki Tamakuma & Eka Djatnika Nugraha & Takahito Suzuki & Miki Arian Saputra & Masahiro Hosoda & Shinji Tokonami, 2020. "Impact of Wind Speed on Response of Diffusion-Type Radon-Thoron Detectors to Thoron," IJERPH, MDPI, vol. 17(9), pages 1-13, May.

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    Keywords

    radon; thoron; comparison;
    All these keywords.

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