EXPOSURE ASSESSMENT AT EXTREMELY LOW-FREQUENCIES - ISSUES, INSTRUMENTATION, MODELING, AND DATA

Epidemiologic studies suggesting a possible link between exposure to E LF magnetic fields and increased cancer risk have spurred interest in the assessment of field levels and exposures in residences, the workpl ace, and other environments. Characteristics such as high degrees of s patial and temporal variability and the presence of multiple frequenci es can complicate assessment strategies. Instrumentation development h as proceeded rapidly, and a number of measurement systems of varying s ophistication are now commercially available. For situations where mea surement is not feasible or practical, computer modeling is expanding the scope of exposure estimation. Health-oriented studies and measurem ent surveys are adding to a growing database of field and exposure lev els.