고압 송전선로 주변에 위치한 초등학교 학생들의 극저주파 자기장 노출량 예측 모델에 관한 연구

Study about Prediction Model to Extremely Low Frequency Magnetic Fields for the Selected Primary Schoolchildren nearby High Voltage Power Line

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 kV 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 II, otherwise, TWA Model II-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 II-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 II-2 should be provided for a reasonable estimate of measured exposure in schoolchildren living near the power line.