불화수소 누출사고 사례를 통한 주변 농작물의 환경피해
Environmental Damage to Nearby Crops by Hydrogen Fluoride Accident
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
BACKGROUND: Hydrogen fluoride is one of the 97 accident preparedness substances regulated by the Ministry of Environment (Republic of Korea) and chemical accidents should be managed centrally due to continual occurrence. Especially, hydrogen fluoride has a characteristic of rapid diffusion and very toxic when leaking into the environment. Therefore, it is important to predict the impact range quickly and to evaluate the residual contamination immediately to minimize the human and environmental damages. METHODS AND RESULTS: In order to estimate the accident impact range, the off-site consequence analysis (OCA) was performed to the worst and alternative scenarios. Also, in order to evaluate the residual contamination of hydrogen fluoride in crop, the samples in accident site were collected from 15-divided regions (East direction from accident sites based on the main wind direction), and the concentration was measured by fluoride (F-) ion-selective electrode potentiometer (ISE). As a result of the OCA, the affected distance by the worst scenario was estimated to be >10 km from the accident site and the range by the alternative scenario was estimated to be about 1.9 km. The residual contamination of hydrogen fluoride was highest in the samples near the site of the accident (E-1, 276.82 mg/kg) and tended to decrease as it moved eastward. Meanwhile, the concentrations from SE and NE (4.96~28.98 mg/kg) tended to be lower than the samples near the accident site. As a result, the concentration of hydrogen fluoride was reduced to a low concentration within 2 km from the accident site (<5 mg/kg), and the actual damage range was estimated to be around 2.2 km. Therefore, it is suggested that the results are similar to those of alternative accident scenarios calculated by OCA (about 1.9 km). CONCLUSION: It is difficult to estimate the chemical accident-affecting range/region by the OCA evaluation, because it is not possible to input all physicochemical parameters. However simultaneous measurement of the residual contamination in the environment will be very helpful in determining the diffusion range of actual chemical accident.
Abstract
BACKGROUND: Hydrogen fluoride is one of the 97 accident preparedness substances regulated by the Ministry of Environment (Republic of Korea) and chemical accidents should be managed centrally due to continual occurrence. Especially, hydrogen fluoride has a characteristic of rapid diffusion and very toxic when leaking into the environment. Therefore, it is important to predict the impact range quickly and to evaluate the residual contamination immediately to minimize the human and environmental damages. METHODS AND RESULTS: In order to estimate the accident impact range, the off-site consequence analysis (OCA) was performed to the worst and alternative scenarios. Also, in order to evaluate the residual contamination of hydrogen fluoride in crop, the samples in accident site were collected from 15-divided regions (East direction from accident sites based on the main wind direction), and the concentration was measured by fluoride (F-) ion-selective electrode potentiometer (ISE). As a result of the OCA, the affected distance by the worst scenario was estimated to be >10 km from the accident site and the range by the alternative scenario was estimated to be about 1.9 km. The residual contamination of hydrogen fluoride was highest in the samples near the site of the accident (E-1, 276.82 mg/kg) and tended to decrease as it moved eastward. Meanwhile, the concentrations from SE and NE (4.96~28.98 mg/kg) tended to be lower than the samples near the accident site. As a result, the concentration of hydrogen fluoride was reduced to a low concentration within 2 km from the accident site (<5 mg/kg), and the actual damage range was estimated to be around 2.2 km. Therefore, it is suggested that the results are similar to those of alternative accident scenarios calculated by OCA (about 1.9 km). CONCLUSION: It is difficult to estimate the chemical accident-affecting range/region by the OCA evaluation, because it is not possible to input all physicochemical parameters. However simultaneous measurement of the residual contamination in the environment will be very helpful in determining the diffusion range of actual chemical accident.
참고문헌 (11)
- Erdal, S., "A quantitative look at fluorosis, fluoride exposure, and intake in children using a health risk assessment approach", Environmental Health Perspectives, 113(1), pp.111~117 (2005)
- 구슬기, "구미 불산 누출사고 지점 주변 식물의 불소화합물 농도 분포 및 공기 중 불화수소 농도 추정에 관한 연구", 한국환경보건학회지, 39(4), pp.346~353 (2013), 한국환경보건학회[DOI]
- 정병곤, "Consequence Analysis를 이용한 화학사고 초기대응에 관한 연구", 한국위험물학회지, 4(2), pp.22~29 (2016), 한국위험물학회
- 김경순, "Diagnostic assessment on vegetation damage due to hydrofluoric gas leak accident and restoration planning to mitigate the damage in a forest ecosystem around Hube Globe in Gumi", 한국습지학회지, 17(1), pp.45~52 (2015), 한국습지학회
- 김진형, "구미 불산사고 사례연구를 통한 예측모델 피해영향범위 비교", Korean Chemical Engineering Research(HWAHAK KONGHAK), 55(1), pp.48~53 (2017), 한국화학공학회
- 김정환, "Hydrogen Fluoride (HF) 누출 사고 시 피해 범위 예측 및 장외영향평가를 위한 모델링 활용 방법", Korean Chemical Engineering Research(HWAHAK KONGHAK), 54(4), pp.582~585 (2016), 한국화학공학회
- 김재영, "이동형 스크러버를 이용한 암모니아 및 톨루엔의 제거 효율", 한국환경농학회지, 37(1), pp.49~56 (2018), 한국환경농학회[DOI]
- 김용준, "산업공정에서 누출된 불화수소의 오염특성 연구 - 피해 농작물 및 수목을 중심으로 -", 한국폐기물자원순환학회지, 33(7), pp.666~673 (2016), 한국폐기물자원순환학회[DOI]
- 고도현, "구미 불산 누출사고로 인한 주변지역 환경영향권 설정에 관한 연구", 한국환경보건학회지, 40(1), pp.27~37 (2014), 한국환경보건학회[DOI]
- 박재선, "사염화규소 누출사고지점 주변 식물에 대한 노출지표 평가", 한국환경농학회지, 36(4), pp.288~292 (2017), 한국환경농학회[DOI]
- 임봉빈, "불산 누출 사고 시 불산에 노출된 식물잎을 이용한대기 중 불화수소 농도 추정", 한국대기환경학회지, 32(3), pp.248~255 (2016), 한국대기환경학회[DOI]