국내 연안 서식 괭이갈매기의 신규 잔류성유기오염물질 축적 특성

Abstract

Seabird has long been used as a biomonitor for long-term monitoring of environmental contaminants in the Europe and North America. In South Korea, national monitoring program on environmental contaminants has been run primarily for coastal sediment and bivalves, while biomonitoring program for high-tropic marine species such as marine mammals and seabirds has not been established yet. This study was performed to find out the best approach and strategy for seabird monitoring, and to identify the levels and profiles of emerging persistent organic pollutants(POPs) in seabird eggs inhabiting along the Korean coasts. Black-tailed gull eggs were collected from breeding places located in the southern (Hong-do), eastern (Dok-do), and western (Seoman-do) coasts and egg content was used for chemical analysis. Emerging POPs were widely detected in seagull eggs. The overall concentration of emerging POPs in the egg were in the range of 19-302(median value: 55) ng/g lipid wt. for PBDEs, 28-501(78) ng/g lipid wt. for HBCDs, and 0.8-131(11) ng/g lipid wt. for NBFRs. Among the target analytes, HBCDs showed the highest concentration and followed by PBDEs and NBFRs. NBFRs were detected at concentrations 4-16 times lower than PBDEs and 7-14 times lower than HBCDs. The levels fo PBDEs and HBCDs were relatively high in the western coast (Seoman-do), while NBFRs showed no significant regional differences.