Fate of Di-2-ethylhexyl Phthalate in Aquatic Food Chain

Di-2-ethylhexyl phthalate의 수서생태계 먹이사슬을 통한 생물축적 및 거동예측

  • Kim, Eun-Joo (Digital Information Center for Environment Research, University of Pohang Science and Technology)
  • 김은주 (포항공과대학교 환경연구정보센터)
  • Published : 2004.09.01

Abstract

An aquatic food chain was constructed to provide information of bioaccumulation of DEHP as followed: phytoplankton(Scenedesmus subspicatus) ${\rightarrow}$ zooplankton(Daphnia magna) ${\rightarrow}$ fish(Oryzias latipes). After 10 days of exposure to DEHP, the fish and culture water were analyzed for residual concentration of DEHP and BAF(Bioaccumulation Factor) was determined. In addition, BCF(Bioconcentration Factor) was calculated in exposure tank in which fish were only exposed DEHP by culture water. These experiments provide the relative importance between BAF and BCF. In this study, BCF and BAF did not show any significant difference. Another work in this study was model construction and application to investigate the effect of food chain structure to BAF in higher organism (fish). The model constructed in this study considered the biological characteristics of DEHP such as metabolic parameters, as well as the chemical characteristics such as solubility. This model could be used in prediction of bioaccumulation level in dependent of various food chain structures, when the target organisms or chemicals would be changed.

Keywords

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