유류오염부지 시범적용을 통한 실외공기 오염물질흡입 노출경로에 대한 부지특이적 노출량 산정 방안에 대한 고찰

Abstract

Exposure assessment methodology for outdoor air inhalation pathways (i.e., inhalation of volatile compounds and fugitivedust in outdoor air) was investigated. Default values of several parameters currently used in Korea (e.g., Q/C; inversevalue of concentration per unit flux, and frs; soil fraction in PM10) may not be suitable and lack site-specificity, as theyhave been adopted from the risk assessment guidance of the United States or the Netherlands. Such limitation can beaddressed to a certain degree by incorporating the volatilization factor (VF) and the particulate emission factor (PEF) withBox model. This approach was applied to an exposure assessment of a site contaminated with petroleum hydrocarbons inKorea. The result indicated that the suggested methodology led to more accurate site-specific exposure assessment foroutdoor inhalation pathways. Further work to establish methodology to determine site-specific Q/C values in Korea needsto be done to secure the reliability of the exposure assessment for outdoor air inhalation pathways.