Dust samples were collected from 17 middle and high schools in the Jeonju-city. Heavy metal concentrations were determined for the dry-deposited dusts from indoor and outdoor of classroom and playground of each sampling site. Concentrations of Cd, Cr, Cu, Ni, Pb and Zn in indoor's dusts were highly concentrated. Also heavy metal concentrations in outdoor's dusts were similar to that of indoor's dusts. Concentrations of Cd, Cu and Zn in the dusts were much higher than the world average contents in soil and environmental orientation value. These levels are similar to those of the dust samples at middle schools located at Kangseo-gu and Yangchon-gu, Seoul. Playground dusts in 6 schools exhibited the enhanced heavy metal pollution with a pollution index (by Kloke) greater than 1.0. Most indoor and outdoor dusts exhibited the enhanced heavy metal pollution with a pollution index (by Culbard et al.) greater than 1.0.

• 조규성(전북대학교 과학교육부) | Kyu Seong Cho