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Ecological Risk Assessment of Lead and Arsenic by Environmental Media
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납과 비소에 대한 환경매체별 생태위해성평가

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Type
Academic journal
Author
Journal
Korean Society of Envlromental Health 한국환경보건학회지 한국환경보건학회지 제46권 제1호 KCI Excellent Accredited Journal
Published
2020.1
Pages
1 - 10 (10page)

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Ecological Risk Assessment of Lead and Arsenic by Environmental Media
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Objectives: This study intends to evaluate the ecological risk of lead (Pb), arsenic (As), and their compounds according to the 2010 action plan on inventory and management for national priority chemicals and provide calculations of risks to the environment. By doing so, we aim to inform risk management measures for the target chemicals. Methods: We conducted species sensitivity distribution (SSD) analysis using the collected ecotoxicity data and obtained predicted no effect concentrations (PNECs) for the in-water environment using a hazardous concentration of 5% (HC5) protective of most species (95%) in the environment. Based on the calculated PNECs for aquatic organisms, PNEC values for soil and sediment were calculated using the partition coefficient. We also calculated predicted exposure concentration (PEC) from nation-wide environmental monitoring data and then the hazard quotient (HQ) was calculated using PNEC for environmental media. Results: Ecological toxicity data was categorized into five groups and five species for Pb and four groups and four species for As. Based on the HC5 values from SSD analysis, the PNEC value for aquatic organisms was calculated as 0.40 µg/L for Pb and 0.13 µg/L for As. PNEC values for soil and sediment calculated using a partition coefficient were 77.36 and 350.50 mg/kg for Pb and 24.20 and 112.75 mg/kg for As. The analysis of national environmental monitoring data showed that PEC values in water were 0.284 µg/L for Pb and 0.024 µg/L for As, while those in soil and sediment were respectively 45.9 and 44 mg/kg for Pb, and 11.40 and 19.80 mg/kg for As. Conclusions: HQs of Pb and As were 0.70 and 0.18 in water, while those in soil and sediment were 0.59 and 0.13 for Pb and 0.47 and 0.18 for As. With HQs <1 of lead and arsenic in the environment, their ecological risk levels are found to be low.

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References (38)

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공인철 / 2010 / 다양한 생물 검정법에 근거한 비소의 위해성 평가 비교 / 대한환경공학회지 32(8):795~801 dbpia 박정임 / 2013 / 국제기구의 환경보건 분야 동향 / 한국환경보건학회지 39(4):299~311 dbpia 이병우 / 2018 / 환경매체별 카드뮴의 생태위해성평가 / 한국환경보건학회지 44(6):548~555 dbpia Shon JG / 2007 / The Risk Assessment of Hazard Chemicals in Environment / J Korean Soc Environ Eng 29(5):477~488 google schola United States Environmental Protection Agency (US EPA) / Lead and Compounds (Inorganic) (CASRN7439-92-1) google schola

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