고상추출법-UHPLC-MS/MS를 이용한 금강 수계 내 신종 유기오염물질 분석

The occurrence and concentration of emerging organic pollutants, organophosphorus flame retardants (OPFRs), benzotriazole UV stabilizers (BUVSs), pharmaceuticals and personal care products (PPCPs) were investigated using SPE coupled with UHPLC-MS/MS. The method detection limit (MDL) and quantification limit (MQL) for target compounds (10 OPFRs, 8 BUVSs, 9 PPCPs) was lower than 4.6 ng/L and 15 ng/L, respectively, while the recovery rate for river water matrix was ranged from 71 to 100%. Among 27 target pollutants, 18 chemicals were successfully quantified with ng/L levels ranged from 0.3 ng/L ~ 36.9 ng/L. Tributyl phosphate (TnBP; 27.7 ng/L), 2-(2H-benzotrizole-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol (UV-234; 1.6 ng/L), and Methyl paraben (MeP; 36.9 ng/L) are the most abundant compound measured at the highest concentration for each pollutants group, respectively. Carbamazepine (CBZ) and MeP showed the highest detection frequency (97%), followed by 77% frequency of triphenyl phosphate (TPhP) and propyl paraben (PrP). The concentration determined for target organic pollutants are far below a level to trigger an acute toxicity on aquatic organisms. However, the information on the occurrence and concentration gathered from chemical monitoring with a reliable analytical technique should be enlarged to expand our knowledge on integrity and safety of aquatic ecosystem.