Abstract

Overview

Exposure to extremely low frequency magnetic fields (ELF-MF) is common in our daily environments. This study provides an in-depth look at ambient ELF-MF exposure in Switzerland.

Findings

• Measurement of magnetic flux density was done using a portable exposimeter in various settings including outdoor areas, public spaces, transport modes, and homes.
• The highest exposure levels were found in train stations, trains, and homes near high-voltage lines.
• Data showed consistent exposure levels over two years with strong correlation coefficients, with all measurements significantly below Swiss regulatory limits.
• An environmental exposure matrix was developed, synthesizing typical daily exposure times in different environments.

Conclusion

This novel environmental exposure matrix serves as a valuable tool for public health communication and supports agent-based exposure modelling for future epidemiological studies.