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Paniagua, Jesús M.; Rufo, Montaña; Jiménez, Antonio; Antolín, Alicia
Environmental research, April 2020, 2020-Apr, 2020-04-00, 20200401, Letnik: 183Journal Article
The main objective of this work was to evaluate human exposure to electromagnetic fields in a city of about one hundred thousand inhabitants, both inside and outside dwellings, using exposure quotients. To this end, a personal exposure meter was used, collecting data in different frequency bands, including radio and television broadcasting, mobile telephony, cordless telephones, and wireless communication networks. The indoor measurements were made with the exposure meter in a static position. Those outdoor were made by walking around the building with the exposure meter held by the operator. The median electric field was 0.200 V/m outdoors and 0.102 V/m indoors. The median of the ICNIRP exposure quotients for multiple-frequency sources was 25 10−6 outside and 16 10−6 inside. The proximity of the operator's body caused the readings of the electric field in the FM band to be overestimated by a factor of 1.35, and in the mobile telephony bands by factors from 0.76 to 1.02. The standard deviation of the measurements repeated inside a dwelling over five days was of the order of the exposure meter's standard uncertainty of calibration, but the spatial dispersion at the scale of a dwelling and of the city was much greater. The two main contributors to the exposure were FM radio followed by the “downlink” mobile telephony bands. Inside the dwellings, the DECT and WIFI bands contributed less. Exposure quotients are dimensionless parameters that characterize exposure, and reflect the relative weight of each service to that exposure. Display omitted •Residential areas were measured indoors and outdoors with a personal exposimeter.•Different protocols were used for indoor and outdoor measurements.•Electric field was systematically detected in the FM and downlink mobile phone bands.•Median exposure quotient was 2.5 10−6 outdoors and 1.6 10−6 indoors.•Exposure quotient: FM radio > downlink > DECT and WIFI.
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