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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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초록· 키워드
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Toxicity assessment of heavy metals (As, Cr and Pb) has been investigated by using the rate of survival and population growth(r) of marine rotifer, Brachionus plicatilis. The survival rate was determined after 24 hours of exposure to As, Cr and Pb. As and Cr reduced survival rate in dose-dependent manner and a significant reduction were occurred at concentration of greater than 30 and 150 mg L-1, but Pb had no effect on survival rate. The r was determined after 72 hours of exposure to As, Cr and Pb. As, Cr and Pb reduced r in dose-dependent manner and a significant reduction were occurred at concentration of greater than 5, 25 and 50 mg L-1. The toxicity of heavy metals were ranked As>Cr>Pb, with EC50 values of 12.98, 82.34 and 110.14 mg L-1, respectively. The no-observed-effect-concentration (NOEC) of r in As, Cr and Pb exposure were 1, 12.5 and 50 mg L-1, respectively. The lowest-observed-effect-concentration (LOEC) of r in As, Cr and Pb exposure were 5, 25, and 50 mg L-1, respectively. From the results, the concentration of As, Cr and Pb (greater than 5, 25 and 50 mg L-1, respectively) have toxic effect on the r of B. plicatilis in natural ecosystems. These results (including NOEC and EC50) might be useful for the mixing toxicity assessment and toxic guide line of heavy metals in marine ecosystems.
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참고문헌 (39)
참고문헌 신청
Ahlf W / 2002 / A guidance for the assessment and evaluation of sediment quality: A german approach based on ecotoxicological and chemical measurements / J. Soils Sediment 2:37~42
ASTM / 1991 / Standard guideline for acute toxicity tests with the rotifer Brachionus Annual Book of ASTM Standards. Vol 11.04 E1440 / American Society for Testing and Materials
Beiras R / 2004 / Inhibition of embryo development of the commercial bivalves Ruditapes decussatus and Mytilus galloprovincialis by trace metals; Implication for the implementation of seawateer quality criteria / Aquaculture 230:205~213
Bhattacharyya R / 2003 / High arsenic groundwater: mobilization, metabolism and mitigation-an overview in the Bengal Delta Plain / Mol. Cell Biochem 253:347~355
Bidwell JR / 1998 / Toxicant effects on the zoospore stage of the marine macroalga Ecklonia radiata / Mar. Ecol. Prog. Ser 163:259~265
ASTM / 1991 / Standard guideline for acute toxicity tests with the rotifer Brachionus Annual Book of ASTM Standards. Vol 11.04 E1440 / American Society for Testing and Materials
Beiras R / 2004 / Inhibition of embryo development of the commercial bivalves Ruditapes decussatus and Mytilus galloprovincialis by trace metals; Implication for the implementation of seawateer quality criteria / Aquaculture 230:205~213
Bhattacharyya R / 2003 / High arsenic groundwater: mobilization, metabolism and mitigation-an overview in the Bengal Delta Plain / Mol. Cell Biochem 253:347~355
Bidwell JR / 1998 / Toxicant effects on the zoospore stage of the marine macroalga Ecklonia radiata / Mar. Ecol. Prog. Ser 163:259~265
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