지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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Sodium hypochlorite (NaOCl) is widely used to disinfect seawater in power plant cooling systems in order to reduce biofouling, and in ballast water treatment systems to prevent transport of exotic marine species. While the toxicity of NaOCl is expected to increase by ongoing ocean acidification, and many experimental studies have shown how algal calcification, photosynthesis and growth respond to ocean acidification, no studies have investigated the relationship between NaOCl toxicity and increased $CO_2$. Therefore, we investigated whether the impacts of NaOCl on survival, chlorophyll a (Chl-a), and effective quantum yield in three marine phytoplankton belonging to different taxonomic classes are increased under high $CO_2$ levels. Our results show that all biological parameters of the three species decreased under increasing NaOCl concentration, but increasing $CO_2$ concentration alone (from 450 to 715 ${\mu}atm$) had no effect on any of these parameters in the organisms. However, due to the synergistic effects between NaOCl and $CO_2$, the survival and Chl-a content in two of the species, Thalassiosira eccentrica and Heterosigma akashiwo, were significantly reduced under high $CO_2$ when NaOCl was also elevated. The results show that combined exposure to high $CO_2$ and NaOCl results in increasing toxicity of NaOCl in some marine phytoplankton. Consequently, greater caution with use of NaOCl will be required, as its use is widespread in coastal waters.
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참고문헌 (40)
참고문헌 신청
Allonier, A. -S. / 1999 / Characterization of chlorination by-products in cooling effluents of coastal nuclear power stations / Mar. Pollut. Bull 38:1232~1241
Añasco, N. C. / 2008 / Toxicity of residual chlorines from hypochlorite-treated seawater to marine amphipod Hyale barbicornis and estuarine fish Oryzias javanicus / Water Air Soil Pollut 195:129~136
Arar, E. J. / 1997 / Method 445.0, in vitro determination of chlorophyll a and pheophytin a in marine and freshwater algae by fluorescence :22
Booth, J. A. T. / 2012 / Natural intrusions of hypoxic, low pH water into nearshore marine environments on the California coast / Cont. Shelf Res 45:108~115
Branco, D. / 2010 / Sensitivity of biochemical markers to evaluate cadmium stress in the freshwater diatom Nitzschia palea (Kützing) W / Smith. Aquat. Toxicol 99:109~117
Añasco, N. C. / 2008 / Toxicity of residual chlorines from hypochlorite-treated seawater to marine amphipod Hyale barbicornis and estuarine fish Oryzias javanicus / Water Air Soil Pollut 195:129~136
Arar, E. J. / 1997 / Method 445.0, in vitro determination of chlorophyll a and pheophytin a in marine and freshwater algae by fluorescence :22
Booth, J. A. T. / 2012 / Natural intrusions of hypoxic, low pH water into nearshore marine environments on the California coast / Cont. Shelf Res 45:108~115
Branco, D. / 2010 / Sensitivity of biochemical markers to evaluate cadmium stress in the freshwater diatom Nitzschia palea (Kützing) W / Smith. Aquat. Toxicol 99:109~117
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