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has been cited by the following article:

• TITLE: Influence of Geological Factor on Indoor Radon Concentrations in Dwelling of Querétaro, México

  AUTHORS: Rocio García Martínez, Anatoliy Kotsarenko, Roman Pérez Enriquez, Jose Antonio López Cruz Abeyro, Svetlana Koshevaya, Jesús Efrén Ospina Noreña

  KEYWORDS: Indoor Radon, Geology, Building Characteristics and Seasonal Variations

  JOURNAL NAME: Open Journal of Geology, Vol.4 No.12, December 26, 2014

  ABSTRACT: In this study, radon-222 concentrations were measured within 34 houses distributed in the northern, southern, and central areas of the city of Querétaro in 2007. The objective of this study was to establish the spatial distribution of radon with respect to geological faults and its relation to certain environmental variables. For each sampling site, the radon-222 concentration was analyzed as a function of various climate variables, relative humidity, temperature, and atmospheric pressure, in addition to the ventilation of the house and distance of each site from any geological faults in the area. A multivariate statistical technique was used to analyze these variables based on two components. For component 1, the relative humidity and temperature had the greatest weight, 0.677 and 0.492, respectively, while for component 2, the greatest weights corresponded to radon and the temperature with 0.693 and 0.609, respectively. The average radon concentration across the entire sampling period was 38.92 Bq/m3, the minimum detected value was 6.01 Bq/m3for site 91GAG0607, and the maximum detected value was 225.95 Bq/m3for site 91CAM20907. This last value is outside the standards permitted by the Environmental Protection Agency of the United Stated, which is 148 Bq/m3for indoor environments. With respect to geological faults and their relationship to radon-222, the concentrations for the sampling sites had no relationship to the closeness or distance to these faults.