Comparison of Radon and Thoron Concentration Measuring Systems Among Asian Countries.

Autor: Janik M; Center for Advanced Radiation Medicine, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba 263-8555, Japan., Tokonami S; Institute of Radiation Emergency Medicine, Hirosaki University, Hirosaki 036-8560, Japan., Iwaoka K; Center for Advanced Radiation Medicine, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba 263-8555, Japan., Karunakara N; Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India., Trilochana S; Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India., Mohan MP; Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India., Kumara S; Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India., Yashodhara I; Centre for Advanced Research in Environmental Radioactivity (CARER), Mangalore University, Karnataka 574199, India., Zhuo W; Institute of Radiation Medicine, Fudan University, Shanghai 200032, China., Zhao C; Shanghai Institute of Measurement and Testing Technology (SIMT), Shanghai 201203, China., Tang F; Shanghai Institute of Measurement and Testing Technology (SIMT), Shanghai 201203, China., He L; Shanghai Institute of Measurement and Testing Technology (SIMT), Shanghai 201203, China., Chanyotha S; Natural Radiation Survey and Analysis Research Unit (NRSA-RU), Chulalongkorn University, Bangkok 10330, Thailand., Kranrod C; Natural Radiation Survey and Analysis Research Unit (NRSA-RU), Chulalongkorn University, Bangkok 10330, Thailand., Al-Azmi D; Department of Applied Sciences, College of Technological Studies, Public Authority for Applied Education and Training, Shuwaikh, PO Box 42325, Kuwait City 70654, Kuwait., Kurihara O; Center for Advanced Radiation Medicine, National Institutes for Quantum and Radiological Science and Technology (QST), Chiba 263-8555, Japan.
Jazyk: angličtina
Zdroj: International journal of environmental research and public health [Int J Environ Res Public Health] 2019 Dec 10; Vol. 16 (24). Date of Electronic Publication: 2019 Dec 10.
DOI: 10.3390/ijerph16245019
Abstrakt: 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.
Databáze: MEDLINE