Estimation of seasonal correction factors through Fourier decomposition analysis—a new model for indoor radon levels in Irish homes

Burke, Órlaith; Long, Stephanie; Murphy, Patrick; Organo, C.; Fenton, D. Mark; Colgan, P.A.

doi:10.1088/0952-4746/30/3/002

Cited by 32 publications

(16 citation statements)

References 14 publications

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“…As it was shown in a number of studies in various countries, indoor radon concentrations typically vary with the seasons [11][12][13][14][15][16][17][18][19][20][21][22][23]. Higher indoor radon concentration in winter than in summer in the majority of houses is the general observation of radon seasonal variation studies in various countries with temperate climate [11,15,[24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 97%

Seasonal Variation of Radon Concentrations in Russian Residential High-Rise Buildings

et al. 2021

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Assessment of the annual radon concentration is often required in indoor radon surveys of territories and individual dwellings for comparison with reference levels, studying factors affecting radon accumulation in dwellings, assessment of exposure in epidemiological studies, etc. The indoor radon surveys were carried out in multistorey buildings in eight Russian cities using solid state nuclear track detectors with an exposure period of three months. For these surveys, the estimation of annual indoor radon concentration was required to compare radon levels in buildings of high- and low-energy-efficiency classes located in different cities. To develop approaches to seasonal normalization in high-rise buildings, long-term one-hour radon concentration series obtained applying radon-monitors in 20 flats were analyzed. The dependency of indoor radon concentration on the indoor–outdoor temperature difference was studied taking into account the known natural, technogenic and anthropogenic factors affecting radon levels. The developed model of seasonal variations in multistorey buildings includes winter, summer, and demi-season periods, which differ both in ventilation intensity and dependency of radon concentration on the temperature difference. The developed model allows to estimate annual radon concentration taking into account the actual distribution of outdoor temperatures during the exposure of the track detectors.

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Section: Introductionmentioning

confidence: 97%

Seasonal Variation of Radon Concentrations in Russian Residential High-Rise Buildings

et al. 2021

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“…Due to the time constraint imposed for epidemiological studies, the exposure durations of Solid State Nuclear Track detectors, which determine this concentration, generally range from 1 to 3 months. [7][8][9] On basis of the seasonal variation of radon concentrations, which is at a maximum level in winter and a minimum in summer, [10][11][12] the choice of short periods of radon measurements does not provide consistent data on health risks related to the human long-term indoor exposure. However, the measurement of these concentrations is not always possible for a 12-month period.…”

Section: Introductionmentioning

confidence: 99%

“…13 To overcome these constraints, several researchers in different countries such as Ireland, United Kingdom, Pakistan, Canada, France and Poland have estimated the annual indoor radon concentration based on their short-term radon measurements. 8,9,[11][12][13][14][15][16][17][18][19][20] These researchers have developed models to determine seasonal correction factors that could be used later to assess the annual average radon concentration. However, although these correction factors remain comparable, other studies have shown the need to estimate seasonal correction factors by region due to several determinants likely to vary indoor radon concentrations.…”

Section: Introductionmentioning

confidence: 99%

Development of a corrective model of short-term radon concentrations to estimate annual effective doses in the primary schools of the Doukkala-Abda region, Morocco

Ouakkas

Boukhair

Abdo

et al. 2022

Indoor and Built Environment

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In order to assess the radiological impact of radon on >250,000 students, the total annual effective dose was estimated inside 204 Moroccan primary schools sampled in the Doukkala-Abda region. The measurement of indoor radon concentrations was conducted using the LR115 detector for each month, each season and throughout the year. The evolution of indoor radon concentrations showed a decrease in annual average radon concentrations of 20–26% and 10–14%, respectively, compared to the monthly and seasonal annual average radon concentrations. For this purpose, a corrective model of short-term radon concentrations was developed to calculate the seasonal correction factors in order to estimate the annual indoor radon concentrations. For the qualitative evaluation of these factors, a percentage of deviation between the measured and estimated annual radon concentrations was calculated. Almost half of the estimated annual concentrations were 10% less than the measured concentration and the majority of these estimated values were within 40%. The estimated total annual effective doses received by students, except those in the Sidi Bennour city, were higher than the world average (1.15 mSv/y). Nevertheless, all these doses remained below the permissible limit recommended by the International Commission on Radiological Protection (3–10 mSv/y).

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“…Thus, radon level in dwellings depends upon the radium content of the ground and building materials, also on how many radon atoms it contains. Texture and size of the grains, ambient temperature and pressure affects the indoor radon too [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Radium Contents and Radon Exhalation Rates in Soil Samples in Menge District, Ethiopia

Abate¹,

Amtatie²

2020

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Radon has been recognized as one of the major contributor to the natural radiation and health hazards in the human dwellings, working places and mining areas. Even lung cancer is expected if it is present in enhanced levels beyond maximum permissible limit. We have studied radium contents and radon exhalation (both mass and surface) rates in Menge mining and nonmining areas of the Benishangul Gumuz region in Western Ethiopia using the sealed Can technique and LR-115 type II plastic nuclear track detectors. Fifteen soil samples were collected over the study area according to the fraction of the populations and mining and non-mining areas. It is found that the values of radium contents vary from 1.20 to 3.94 Bq.kg-1 with an average value 2.44 Bq.kg-1. It is also found that gold mining areas have had relatively higher radium contents as compared to the other samples which are collected from non-mining areas. And radon exhalation study is important for understanding the relative contribution of the material to the total radon concentration found inside the study area. The radon mass and surface exhalation rates for the studied samples had the mean values of 2.16×10-6 Bq.kg-1 .d-1 and 1.14×10-4 Bq.m-2 .d-1 respectively.

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Estimation of seasonal correction factors through Fourier decomposition analysis—a new model for indoor radon levels in Irish homes

Cited by 32 publications

References 14 publications

Seasonal Variation of Radon Concentrations in Russian Residential High-Rise Buildings

Seasonal Variation of Radon Concentrations in Russian Residential High-Rise Buildings

Development of a corrective model of short-term radon concentrations to estimate annual effective doses in the primary schools of the Doukkala-Abda region, Morocco

Investigation of Radium Contents and Radon Exhalation Rates in Soil Samples in Menge District, Ethiopia

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