PARENT SESSION

PH11 Bioaccumulation and Biotransformation of POPs
Exhibit Hall
8:00 AM - Thursday, 13 November 2003

(PH103) Distribution and Characteristics of Polycyclic Aromatic Hydrocarbons in Zooplanktons from Gwangyang Bay, Korea.

Yim, U.H.¹, Hong, S.H.¹, Shim, W.J.¹, Oh, J.R.¹, Shin, K.S.¹, Jang, M.¹, ¹ KORDI South Sea Institute, Geoje, Kyongnam, Republic of Korea

ABSTRACT- Samples of zooplankton and seawater were collected between Jun 2001 and February 2002 in Gwangyang Bay to examine accumulation characteristics of PAHs in zooplankton. Total PAHs concentration in zooplankton varied 18.9 - 143 ng/g wet weight and showed elevated levels in the eastside of the bay. Total PAHs in seawater was in the range of 24.3 - 128 ng/L and showed similar spatial distribution with zooplankton. Petrogenic PAHs was proposed as the dominant source of PAHs accumulated in zooplankton, while pyrogenic PAHs were also detected depending on the season. The relationship between bioconcentration factor (BCF) and octanol-water partition coefficient (K_ow) observed for the zooplankton was linear and near 1:1(slope = 0.97). Concentrations of total PAHs in bivalves were two times higher than those of zooplankton when normalized by lipid contents. These results suggest that PAHs concentrations in zooplankton likely to reflect water concentrations and that PAHs may biomagnify in the lower trophic level.

Key words: zooplankton, PAHs, bioaccumulation