| Title |
Risk Assessment of Micro and Emerging Contaminants in Domestic Effluent Environment: Targeting on 80 First-class substances assigned by Ministry of Environment |
| Authors |
이재엽 ( Lee Jai-yeop ) ; 박새롬 ( Park Saerom ) ; 김일호 ( Kim Ilho ) |
| DOI |
https://doi.org/10.15681/KSWE.2021.37.6.501 |
| Keywords |
Emerging contaminants; Hazard quotient; Micropollutants; PNEC; Risk assessment |
| Abstract |
In 2018, total 263 micro and emerging contaminants were selected as target substances by the Ministry of Environment, and 80 of them were first-class substance including endocrine disruptors, residual Pharmaceuticals and Personal Care Products (PPCPs), residual organic pollutants, pesticides and heavy metals. In this study, in order to evaluate the Hazard Quotient (HQ) of the 80 types in the domestic water environment the concentration of discharged effluent and nearby water environment reported by Korean institutes since 2010 was investigated. There were 45 substances reported to be detected, and Measurement Environment Concentration (MEC) were obtained by collectively converting them into water environment concentration. For biotoxicity, half maximal Effective Dose (EC50) to Daphnia magna, a water fleas species widely adopted in Material Safety Data Sheet (MSDS) was applied. As for the biotoxicity level, the Predicted No-Effect Concentration (PNEC) was obtained by applying the Assessment Factor (AF) and the HQ was derived by dividing it from the MEC. As a result of calculating the HQ, more than 1 substances were Cabamazepine, Mefenamic acid, Acetaminophen, Ibuprofen, Nonylphenol, Nickel, Erythromycin, Acetylslic acid, etc. Meanwhile, perfluorinated compounds were identified as hazardous substances in the water environment, with 5 out of 14 species included in the 20 ranks of first-class substance. |