USA: Cell Phone Towers Largest Contributor to Environmental RF Radiation; Los Angeles results
maandag, 12 maart 2018 - Categorie: Berichten Internationaal
9 maart 2018
New Study Shows that Cell Phone Towers are Largest Contributor to Environmental Radiofrequency Radiation Exposure
A new study measuring radiofrequency electromagnetic fields shows considerable variability in exposure in six countries. Cell phone towers are the most dominant contributor.
(Los Angeles, CA, March 9, 2018) Today the journal, Environment International, published online a six-nation study of outdoor exposures to radiofrequency electromagnetic fields (RF-EMF).
Wireless devices and infrastructure emit RF-EMF. However, little is known about how this affects environmental exposures around the world. In the present study, RF-EMF measurements were taken in locations in Australia, Ethiopia, Nepal, South Africa, Switzerland and the United States by means of portable measurement devices. The devices considered exposure from cell phone towers, TV and FM radio broadcast antennas, cell phone handsets and Wi-Fi.
According to Dr. Martin Röösli, Associate Professor at the Swiss Tropical and Public Health Institute and senior author of the paper, “The study demonstrates that total RF-EMF exposure levels in the environment vary widely between different areas. Cell phone tower radiation is the dominant contributor in most outdoor areas.”
Los Angeles was the study site in the United States.
Compared to the other five countries, the US had high exposure levels ranging from 1.4 milliwatts per square meter (mW/m²) in a non-central residential area of Los Angeles to 6.8 mW/m² in a rural center of the city. The median total exposure to RF-EMF across all eight outdoor microenvironments in Los Angeles was 3.4 mW/m².
Today’s outdoor RF-EMF levels in Los Angeles are about 70 times greater than what the EPA estimated forty years ago.
Sanjay Sagar, the first author of the paper, and Martin Röösli, are with the Swiss Tropical and Public Health Institute in Basel, Switzerland. Co-authors from the U.S. include Michael Jerrett and Tony Kuo with the UCLA Fielding School of Public Health, Michael Brunjes and Lisa Arangua with the Los Angeles County Health Department, and Joel Moskowitz with the UC Berkeley School of Public Health.
The press release and links to the paper and supplemental material: bit.ly/celltowerRF .
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Joel M. Moskowitz, Ph.D., Director
Center for Family and Community Health
School of Public Health
University of California, Berkeley
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