구미 불산 누출사고로 인한 주변지역 환경영향권 설정에 관한 연구
Defining Area of Damage of 2012 Hydrofluoric Acid Spill Accident in Gumi, Korea
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초록
Objectives: On September 27, 2012, leakage of anhydrous hydrofluoric acid occurred in a chemical plant in theGumi National Industrial Complex. Following the accident, local factory workers and residents complained ofabnormal health conditions. In addition, visual discolorations were widely observed in crops and trees insurrounding areas. The main objectives of the present study were to identify the area that was affected by thespill using data obtained from plants, soil, and water samples after the accident. Methods: Fluoride concentrations were analyzed in pine tree needles, soil, nearby streams, ponds and reservoirscollected from an area within a radius of three kilometers from the plant where the leak occurred. Fluorideconcentrations in the air at the time of leakage were then estimated from fluoride concentrations that weremeasured in the pine tree needles. A Kriged map was developed to describe the spatial distribution ofhydrofluoric acid at the time of the leakage and was compared with the area designated as a Special DisasterZone by the government. Results: The Special Disaster Zone did not include all the affected area that was estimated by the Kriged map. Analytical results of the environmental samples also supported this discrepancy. Conclusion: Using plants, atmospheric concentrations of fluoride at the time of the leakage could be estimated. For the area that was identified as affected, further public health risk assessment and environmental riskassessment should be considered. Also, in the absence of air monitoring at the time of leakage, studies employingplants may be conducted in order to better understand the spatial extent and severity of the contamination.
Abstract
Objectives: On September 27, 2012, leakage of anhydrous hydrofluoric acid occurred in a chemical plant in theGumi National Industrial Complex. Following the accident, local factory workers and residents complained ofabnormal health conditions. In addition, visual discolorations were widely observed in crops and trees insurrounding areas. The main objectives of the present study were to identify the area that was affected by thespill using data obtained from plants, soil, and water samples after the accident. Methods: Fluoride concentrations were analyzed in pine tree needles, soil, nearby streams, ponds and reservoirscollected from an area within a radius of three kilometers from the plant where the leak occurred. Fluorideconcentrations in the air at the time of leakage were then estimated from fluoride concentrations that weremeasured in the pine tree needles. A Kriged map was developed to describe the spatial distribution ofhydrofluoric acid at the time of the leakage and was compared with the area designated as a Special DisasterZone by the government. Results: The Special Disaster Zone did not include all the affected area that was estimated by the Kriged map. Analytical results of the environmental samples also supported this discrepancy. Conclusion: Using plants, atmospheric concentrations of fluoride at the time of the leakage could be estimated. For the area that was identified as affected, further public health risk assessment and environmental riskassessment should be considered. Also, in the absence of air monitoring at the time of leakage, studies employingplants may be conducted in order to better understand the spatial extent and severity of the contamination.
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