https://repository.kopri.re.kr/handle/201206/5308 2026-04-15T04:51:56Z 2026-04-15T04:51:56Z Lim, Hyoun Soo Kim, Jeong Hoon Lee, Sang-Hwan Park, Hyun Kim, Minkyun Ahn, In-Young https://repository.kopri.re.kr/handle/201206/6023 2022-03-24T07:12:27Z 2010-01-01T00:00:00Z

Title: Polychlorinated biphenyl congeners in Antarctic biota from the Barton Peninsula, King George Island Authors: Lim, Hyoun Soo; Kim, Jeong Hoon; Lee, Sang-Hwan; Park, Hyun; Kim, Minkyun; Ahn, In-Young Abstract: Although Antarctica is largely pristine, relatively volatile persistent organic pollutants (POPs) can be carried there by long-range atmospheric transport. Their highly lipophilic and persistent nature allows ready accumulation in organisms and subsequent biomagnifications through the food web. Here, we describe the distribution and concentration profiles of dioxin-like PCB congeners, and estimate transference rates through the food web in various Antarctic organisms. Antarctic organisms from various trophic levels were collected from around Narebski Point and Marian Cove, Barton Peninsula, King George Island, South Shetland Islands between 2007 and 2008. The dioxin-like PCB concentrations were 18.52 pg g-1 in sediments from c. 20m depth in Marian Cove. The mean dioxin-like PCB concentrations were 0.35 ng g-1 in krill, 3.9 ng g-1 in amphipods, 15.1 ng g-1 in silverfish, 4.1 ng g-1 in gentoo penguin, and 1.6 ng g-1 in chinstrap penguin eggs. The higher concentration of dioxin-like PCBs in predators (brown skua and south polar skua) compared with amphipods etc. confirms the importance of biomagnification. The highest transference rates were observed in the link between the highest carnivorous predators (two skua species) and their major prey, penguins and krill. This study is the first to report dioxin-like PCB concentrations and bioaccumulation in various food web levels around Nar˛ebski Point (ASPA No. 171). Further comprehensive studies of contamination, including other POPs and heavy metals, will be conducted in this area.

2010-01-01T00:00:00Z Lee, Sang-Hwan Park, Hyun Lim, Hyoun Soo Kim, Jeong Hoon Kim, Minkyun https://repository.kopri.re.kr/handle/201206/6037 2022-03-24T07:12:27Z 2010-01-01T00:00:00Z

Title: Polychlorinated biphenyl congeners in soils and lichens from King George Island, South Shetland Islands, Antarctica Authors: Lee, Sang-Hwan; Park, Hyun; Lim, Hyoun Soo; Kim, Jeong Hoon; Kim, Minkyun Abstract: The levels and distribution of polychlorinated biphenyl (PCB) congeners were analyzed in fourteen soil and eight lichen (Usnea aurantiaco-atra) samples from King George Island, West Antarctica. A total of 32 PCB congeners were found in five soil samples collected in 2006, and the mean concentration of total PCBs was 20.4 pg/g dry weight (range, 8.0？33.8 pg/g dry weight). The most abundant PCB isomers in soil samples were di-, tri-, and penta-CBs, which accounted for more than 75% of the total residues. Twelve dioxin-like PCBs were also detected in nine soil and eight lichen samples, and the levels of dioxin-like PCBs were 5-fold higher in lichens than in soil. PCBs were detected at very low levels in most soil and lichen samples. The highest congener concentrations were found for PCB 118 (6.63 and 21.93 pg/g in soil and lichen, respectively) among dioxin-like PCBs. PCB levels in air samples were highly correlated with those in soil and lichen samples, as were PCB levels in soil and lichen samples collected at the same site. Long-range atmospheric transport is thought to be the main source of PCBs on King George Island. However, PCB levels in soil and lichen samples were also apparently influenced by local sources of PCBs.

2010-01-01T00:00:00Z