Environmental radon studies in Mexico

Segovia, N.; Gaso, M. I.; Armienta, M.A.

doi:10.1007/s10653-006-9069-6

Cited by 28 publications

(8 citation statements)

References 40 publications

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“…This detection of radon has mainly been performed with solid-state nuclear track detectors (SSNTD) and with active detection devices based on silicon detectors or ionization chambers [48, 49]. …”

Section: Discussionmentioning

confidence: 99%

Lung Cancer Mortality and Radon Concentration in a Chronically Exposed Neighborhood in Chihuahua, Mexico: A Geospatial Analysis

Garza

Sanı́n

Montero-Cabrera

et al. 2014

The Scientific World Journal

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This study correlated lung cancer (LC) mortality with statistical data obtained from government public databases. In order to asses a relationship between LC deaths and radon accumulation in dwellings, indoor radon concentrations were measured with passive detectors randomly distributed in Chihuahua City. Kriging (K) and Inverse-Distance Weighting (IDW) spatial interpolations were carried out. Deaths were georeferenced and Moran's I correlation coefficients were calculated. The mean values (over n = 171) of the interpolation of radon concentrations of deceased's dwellings were 247.8 and 217.1 Bq/m3, for K and IDW, respectively. Through the Moran's I values obtained, correspondingly equal to 0.56 and 0.61, it was evident that LC mortality was directly associated with locations with high levels of radon, considering a stable population for more than 25 years, suggesting spatial clustering of LC deaths due to indoor radon concentrations.

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Section: Discussionmentioning

confidence: 99%

Lung Cancer Mortality and Radon Concentration in a Chronically Exposed Neighborhood in Chihuahua, Mexico: A Geospatial Analysis

Garza

Sanı́n

Montero-Cabrera

et al. 2014

The Scientific World Journal

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“…A major study of 100 public water supply systems in China showed a range from 0.04 to 100 Bq/l radon (Ren et al 1996). In Mexico groundwaters and water supplies are commonly around 2.2 Bq/l radon but can reach a maximum of 34.2 Bq/l radon (Segovia et al 2007).…”

Section: Background Radonmentioning

confidence: 99%

“…Global summary of indoor radon ( 222 Rn) activities (Bq/m 3 ) (UNSCEAR 2000), including additional Mexican data fromSegovia et al (2007) and Paarl, South African data fromLindsay et al (2008) …”

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confidence: 99%

Radon sources and impacts: a review of mining and non-mining issues

Mudd

2008

Rev Environ Sci Biotechnol

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Radon is a ubiquitous natural carcinogen derived from the three primordial radionuclides of the uranium series ( 238 U and 235 U) and thorium series ( 232 Th). In general, it is present at very low concentrations in the outdoor or indoor environment, but a number of scenarios can give rise to significant radiological exposures. Historically, these scenarios were not recognised, and took many centuries to understand the links between the complex behaviour of radon and progeny decay and health risks such as lung cancer. However, in concert with the rapid evolution in the related sciences of nuclear physics and radiological health in the first half of the twentieth century, a more comprehensive understanding of the links between radon, its progeny and health impacts such as lung cancer has evolved. It is clear from uranium miner studies that acute occupational exposures lead to significant increases in cancer risk, but chronic or sub-chronic exposures, such as indoor residential settings, while suggestive of health risks, still entails various uncertainties. At present, prominent groups such as the BEIR or UNSCEAR committees argue that the 'linear no threshold' (LNT) model is the most appropriate model for radiation exposure management, based on their detailed review and analysis of uranium miner, residential, cellular or molecular studies. The LNT model implies that any additional or excess exposure to radon and progeny increases overall risks such as lung cancer. A variety of engineering approaches are available to address radon exposure problems. Where high radon scenarios are encountered, such as uranium mining, the most cost effective approach is well-engineered ventilation systems. For residential radon problems, various options can be assessed, including building design and passive or active ventilation systems. This paper presents a very broad but thorough review of radon sources, its behaviour (especially the importance of its radioactive decay progeny), common mining and non-mining scenarios which can give rise to significant radon and progeny exposures, followed by a review of associated health impacts, culminating in typical engineering approaches to reduce exposures and rehabilitate wastes.

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“…In hal ing of in door ra don and its prog eny forms about 60 % of the to tal back ground ra di a tion dose of hu man be ings [7]. Ra don con cen tra tion in in door air is on av er age 2-10 times higher than that in the free atmo sphere [8][9][10] and it de pends on the rate of ex ha lation of ra don from the soil and the in ten sity of tur bulent air mix ing.…”

Section: Introductionmentioning

confidence: 99%

Measurement of indoor radon concentrations in different dwellings in Arar, Saudi Arabia

Abdalla

El‐Gamal

2018

NUCL TECH RAD PROT

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In door ra don con cen tra tions in 33 dwell ings in Arar city were mea sured us ing a CR-39 detec tor. This work is the first in the re gion and was done to as sess the health risks. The ex po sure time was about 4 months, from May to Sep tem ber 2017. It was found that the in door ra don con cen tra tion changed in the range from 7.7 to 89.1 Bqm-3 with an over all av er age of 44.05 ± 6.21 Bqm-3 while the geo met ric mean is 39.51 Bqm-3 with a geo met ric stan dard de vi a tion of 1.67. These val ues are within the ac cept able level set by the In ter na tional Com mit tee for Radi a tion Pro tec tion. The an nual ef fec tive dose re ceived by the pop u la tion of Arar was re ported and it var ied in the range 0.16-1.82 mSv with an av er age value of 0.9 ±.0.16 mSv and the geomet ric mean is 0.81 mSv. The ex po sure to ra don prog eny was stud ied where the min i mum, max i mum, av er age, and geo met ric mean of ex po sure are 0.83×10-3 , 9.63×10-3 , 4.76 ± 0.67× 10-3 and 5.05×10-3 WLM, re spec tively. Fi nally, for the es ti ma tion of can cer risks, the ex cess life time can cer risk was in ves ti gated. Its av er age value was 3.7×10-3 which is rel a tively higher.

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Environmental radon studies in Mexico

Cited by 28 publications

References 40 publications

Lung Cancer Mortality and Radon Concentration in a Chronically Exposed Neighborhood in Chihuahua, Mexico: A Geospatial Analysis

Lung Cancer Mortality and Radon Concentration in a Chronically Exposed Neighborhood in Chihuahua, Mexico: A Geospatial Analysis

Radon sources and impacts: a review of mining and non-mining issues

Measurement of indoor radon concentrations in different dwellings in Arar, Saudi Arabia

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