Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors

(1) Background: Affordable electronic radon instruments have become increasingly popular as alternatives to traditional home radon measurements, which require a minimum duration of two months. This study aimed to determine how results obtained from these devices should be interpreted and whether sho...

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Main Authors: Tuukka Turtiainen, Katja Kojo, Päivi Kurttio
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Atmosphere
Subjects:
Online Access:https://www.mdpi.com/2073-4433/16/5/489
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author Tuukka Turtiainen
Katja Kojo
Päivi Kurttio
author_facet Tuukka Turtiainen
Katja Kojo
Päivi Kurttio
author_sort Tuukka Turtiainen
collection DOAJ
description (1) Background: Affordable electronic radon instruments have become increasingly popular as alternatives to traditional home radon measurements, which require a minimum duration of two months. This study aimed to determine how results obtained from these devices should be interpreted and whether short-term measurements lasting 2–5 days can be reliably used to assess the need for radon remediation in buildings, estimate residents’ exposure, or assess public exposure. (2) Methods: A year-long radon measurement was conducted in 55 dwellings, selected to represent the Finnish housing stock as accurately as possible. Radon concentrations were recorded hourly, and the results were analysed using probabilistic analysis to calculate the likelihood of erroneous assessments. (3) Results: If a maximum false-negative rate of 1% is accepted, the action level for a 2–5-day measurement is 90–100 Bq/m<sup>3</sup>. For measurements exceeding this threshold, a longer measurement period is necessary. (4) Conclusions: Based on this study, short-term radon measurements cannot yet be recommended as a replacement for current methods. However, the study revealed significant radon level fluctuations in September, suggesting that this period should be reconsidered for inclusion in the measurement season.
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spelling doaj-art-baf6b86a55d94d09a39dc90dab58f3f52025-08-20T02:33:30ZengMDPI AGAtmosphere2073-44332025-04-0116548910.3390/atmos16050489Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction FactorsTuukka Turtiainen0Katja Kojo1Päivi Kurttio2Radiation and Nuclear Safety Authority (STUK), 01370 Vantaa, FinlandRadiation and Nuclear Safety Authority (STUK), 01370 Vantaa, FinlandRadiation and Nuclear Safety Authority (STUK), 01370 Vantaa, Finland(1) Background: Affordable electronic radon instruments have become increasingly popular as alternatives to traditional home radon measurements, which require a minimum duration of two months. This study aimed to determine how results obtained from these devices should be interpreted and whether short-term measurements lasting 2–5 days can be reliably used to assess the need for radon remediation in buildings, estimate residents’ exposure, or assess public exposure. (2) Methods: A year-long radon measurement was conducted in 55 dwellings, selected to represent the Finnish housing stock as accurately as possible. Radon concentrations were recorded hourly, and the results were analysed using probabilistic analysis to calculate the likelihood of erroneous assessments. (3) Results: If a maximum false-negative rate of 1% is accepted, the action level for a 2–5-day measurement is 90–100 Bq/m<sup>3</sup>. For measurements exceeding this threshold, a longer measurement period is necessary. (4) Conclusions: Based on this study, short-term radon measurements cannot yet be recommended as a replacement for current methods. However, the study revealed significant radon level fluctuations in September, suggesting that this period should be reconsidered for inclusion in the measurement season.https://www.mdpi.com/2073-4433/16/5/489radonindoor airtemporal variationdwellingcorrection factor
spellingShingle Tuukka Turtiainen
Katja Kojo
Päivi Kurttio
Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors
Atmosphere
radon
indoor air
temporal variation
dwelling
correction factor
title Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors
title_full Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors
title_fullStr Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors
title_full_unstemmed Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors
title_short Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors
title_sort short term temporal variability of radon in finnish dwellings and the use of temporal correction factors
topic radon
indoor air
temporal variation
dwelling
correction factor
url https://www.mdpi.com/2073-4433/16/5/489
work_keys_str_mv AT tuukkaturtiainen shorttermtemporalvariabilityofradoninfinnishdwellingsandtheuseoftemporalcorrectionfactors
AT katjakojo shorttermtemporalvariabilityofradoninfinnishdwellingsandtheuseoftemporalcorrectionfactors
AT paivikurttio shorttermtemporalvariabilityofradoninfinnishdwellingsandtheuseoftemporalcorrectionfactors