Development of a source-exposure matrix for occupational EMF exposure assessment in the INTEROCC study
Abstract
Abstract Summary
Overview
The study aimed at developing an occupational exposure assessment to electromagnetic fields (EMF) for the INTEROCC study. Initially, a comprehensive database of source-based EMF measurements gathered from various publications was constructed.
Methodology
A novel approach employing order statistics and log-normal distribution features was crafted to summarize the measurements into a source-exposure matrix (SEM). This method accounted for the quality and significance of the data, allowing the compilation of arithmetic and geometric mean estimates, alongside variability and maximum exposure values across various EMF sources, frequency bands, and dosimetry types. Weighted means were implemented using the analysts' confidence in the measurements.
Findings
- Consolidated into the SEM were confidence-weighted mean and maximum exposure estimates across 312 EMF sources ranging from 0 Hz to 300 GHz.
- Exposure levels spanned from radiofrequency sources with electric fields from 0.8 V/m to 320 V/m, and magnetic fields from 0.02 A/m to 0.6 A/m.
- Extremely low-frequency sources revealed electric fields from 0.2 V/m to 11,700 V/m and magnetic fields from 0.14 μT to 17 μT.
Conclusion
The constructed SEM for EMF constitutes a pioneer tool in summarizing occupational exposure data, potentially adaptable for other physical or chemical agents. This methodological advancement underscores the importance of reliable assessment tools in understanding and mitigating potential health risks associated with EMF occupational exposure.