Assessment of multiple frequency ELF electric and magnetic field exposure

Physics in Medicine and Biology
N Leitgeb

Abstract

Electromagnetic fields both in daily life and at workplaces exhibit increasingly complex frequency spectra. Present spectral assessment rules proved to be too conservative for health risk assessment. This is because they are based on the assumption that cells would react like linear systems in terms of responding to a sum of frequencies by a sum of independent responses to each individual frequency. Based on numerical investigations with the Hodgkin-Huxley and the Frankenhaeuser-Huxley nerve cell models, it could be shown that accounting for the nonlinear behaviour of cellular excitation processes avoids considerable overestimation of simultaneous exposures to multiple frequency ELF electric and magnetic fields. Besides this, it could be shown that the role of phase relationships is less important than that assumed so far. The present assessment rules lead to non-compliances of marketed electric appliances. For general application, a nonlinear biology-based assessment (NBBA) rule has been proposed, validated and proven advantageous compared with ICNIRP's rule. While staying conservative it avoids unnecessary overestimation and demonstrates compliance even in cases of suspected non-conformities. It is up to responsible bodies to...Continue Reading

Citations

Apr 15, 2008·Radiation Protection Dosimetry·N LeitgebJ Schröttner
May 31, 2014·Radiation Protection Dosimetry·Jesús M PaniaguaJulián Carrero
Apr 4, 2015·International Journal of Environmental Research and Public Health·Serena FiocchiPaolo Ravazzani
Jan 14, 2009·Journal of Neural Engineering·Thomas JochumPatrick Wolf
Apr 8, 2014·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Valerio De Santis, Xi Lin Chen
Nov 21, 2013·Physics in Medicine and Biology·Valerio De SantisAkimasa Hirata

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