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Title: Radon levels inside residences in Mexico City

Levels of radon were measured during winter and spring seasons inside 55 colonial and modern houses and 30 multifamily apartment buildings representative of middle and upper income families. The modern houses and apartment buildings in the southern section of the city had average radon levels exceeding 150 Bq m{sup {minus}3} with a maximum single measurement of 458 Bq m{sup {minus}3}. The colonial houses in the central downtown section had radon levels nearly all averaging below 100 Bq m{sup {minus}3}. Between the ground and third floor of the apartment buildings, radon levels diminished by tenfold indicating that entry of radon-bearing soil gas was largely responsible for the elevated concentrations of radon. The radon levels in winter exceeded by about 30% the radon levels during spring. The potentially adverse health effects of these radon levels may be exacerbated by the quality of air in Mexico City which during winter is often highly polluted. 7 refs., 2 figs.
Authors:
 [1] ;  [2]
  1. (Universidad Nacional Autonoma de Mexico, Mexico City (Mexico). Inst. de Fisica)
  2. (Oak Ridge National Lab., TN (USA))
Publication Date:
OSTI Identifier:
5124054
Report Number(s):
CONF-891104-2
ON: DE90004934; TRN: 90-005454
DOE Contract Number:
AC05-84OR21400
Resource Type:
Conference
Resource Relation:
Conference: 9. international conference on solid state dosimetry, Vienna (Austria), 6-10 Nov 1989
Research Org:
Oak Ridge National Lab., TN (USA)
Sponsoring Org:
DOE/ER
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; DAUGHTER PRODUCTS; MINIMIZATION; RADON 222; RESIDENTIAL BUILDINGS; INDOOR AIR POLLUTION; ENVIRONMENTAL EFFECTS; HEALTH HAZARDS; MEXICO; RADIOECOLOGICAL CONCENTRATION; RESPONSE MODIFYING FACTORS; SEASONAL VARIATIONS; SOILS; AIR POLLUTION; ALPHA DECAY RADIOISOTOPES; BUILDINGS; DAYS LIVING RADIOISOTOPES; DEVELOPING COUNTRIES; ECOLOGICAL CONCENTRATION; EVEN-EVEN NUCLEI; HAZARDS; HEAVY NUCLEI; ISOTOPES; LATIN AMERICA; NORTH AMERICA; NUCLEI; POLLUTION; RADIOISOTOPES; RADON ISOTOPES; VARIATIONS 320107* -- Energy Conservation, Consumption, & Utilization-- Building Systems-- (1987-); 540300 -- Environment, Aquatic-- (1990-)