Development of Risk Assessment and Management System

Abstract

P-566 Abstract: Risk assessment methodology is a basic technique for quantitating the risks of pollutants to the human and for the systematic promotion of environmental hazardous pollutants management based on the estimated risk level. The risk assessment methodology was structured by many organization(government, academy, international agency et al.) and even in Korea, risk assessment are conducted on pollutants, which exist in environmental medium. Currently, the new issues proposed in risk assessment methodology: 1) consideration of toxicity mechanism, 2) integration of exposure dose of different groups with different level of exposures, 3) multi-media/multi-pathway exposure, 4) change in exposure dose according to the exposure duration, 5) accumulative exposure dose calculation, 6) consideration regarding diverse sensitivity of population as a receptor. The new methodologies for execution of risk assessment are continuously being developed for settling these problems. We had structured a database, which unifies all information, which could be utilized in risk assessment by collecting the toxicity value (cancer potency, reference dose, benchmark dose et al.), which had been researched and reported for the dose-response assessment, toxicity of each chemicals, and information about environmental fate. Also for the exposure assessment, we tried to construct the monitoring within each environmental medium, to structure environmental fate model within the environment in which the transport/transformation of pollutants existing in each environmental medium could be understood and estimated, to estimate the residue level of pollutants through monitoring, and to calculate the exposure dose to human based on the level of pollutants monitored. Finally, we constructed ‘Risk Assessment and Management System on Environmental pollutants’ which was integrated analytical system and risk assessment/management system.