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KMID : 1156220060320050506
Journal of Environmental Health Sciences
2006 Volume.32 No. 5 p.506 ~ p.514
Study about Prediction Model to Extremely Low Frequency Magnetic Fields for the Selected Primary Schoolchildren Nearby High Voltage Power Line
Kim Yoon-Shin

Roh Young-Man
Hong Seung-Cheol
Choi Sung-Ho
Hyun Youn-Joo
Abstract
The objectives of this study were to evaluate personal exposure estimated using a time activity pattern and microenvironmental model. The study was carried out for 44 children attending a primary school nearby the lines (school A) and 125 children attending a school away from 154 §Ç power lines (school B). For children attending school A, the estimated personal level was a little weak correlated with the measured level(Pearson r = 0.34~0.35). For children attending school B, the correlation was very low (Pearson r = 0.09~0.16) using the TWA Model ¥±, otherwise, TWA Model ¥±-1 which considered the average residential MF level according to the distance from the power line and home explained 39~53% of the correlation in MF personal exposures. The estimated personal exposure level was very well represented by the measured exposure level using TWA Model ¥±-2 which consisted on spot and 24 h stationary measurements at subject¡¯s home (Pearson r = 0.65~0.85). In conclusion, personal magnetic field expsoure estimated using a TWA Model ¥±-2 should be provided for a reasonable estimate of measured exposure in schoolchildren living near the power line.
KEYWORD
extremely low frequency magnetic field, transmission power line, exposure assessment, microenvironmental model, residential exposure, personal exposure, spot measurements
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