Characterization of Commercially Available Active-Type Radon–Thoron Monitors at Different Sampling Flow Rates
| Autor: | Yuto Jin, Masahiro Hosoda, Chutima Kranrod, Aoi Sanpei, Shinji Tokonami, Mizuki Kiso, Hiromu Kobayashi, Eka Djatnika Nugraha, Hiroki Hashimoto, Ryoju Negami, Yuki Tamakuma |
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| Rok vydání: | 2021 |
| Předmět: |
discriminative measurement
Atmospheric Science business.industry thoron chemistry.chemical_element Sampling (statistics) Radon Environmental Science (miscellaneous) respiratory tract diseases 030218 nuclear medicine & medical imaging Volumetric flow rate 03 medical and health sciences 0302 clinical medicine chemistry performance test Meteorology. Climatology 030220 oncology & carcinogenesis Multiple sampling Calibration Environmental science flow rate QC851-999 business Quality assurance Remote sensing |
| Zdroj: | Atmosphere, Vol 12, Iss 971, p 971 (2021) Atmosphere Volume 12 Issue 8 |
| ISSN: | 2073-4433 |
| DOI: | 10.3390/atmos12080971 |
| Popis: | Recently, some commercially available active-type radon–thoron monitors were developed however, their performance has not been characterized. This article presents the characteristics of three commercially available active-type radon–thoron monitors (RAD7, Radon Mapper, and AlphaGUARD) at different sampling flow rates. The thoron concentration measured by the monitors was compared with the reference value measured by a grab sampling method. As a result, the ratio of the measured concentration to the reference increased with flow rate for the RAD7 and the Radon Mapper although that of the AlphaGUARD decreased. The difference may be attributed to the coefficients used in the calculation and the measurement time scheme. The results indicate the importance of the sampling flow rate in thoron measurement. Monitoring of flow rate at the measurement and periodic calibration at multiple sampling flow rates should be conducted for quality assurance and quality control of the measurand. |
| Databáze: | OpenAIRE |
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