气候变化领域集成服务门户(CCPortal): Po uptake in microalgae at different seawater pH: An experimental study simulating ocean acidification

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DOI	10.1016/j.marpolbul.2019.110844
	Po uptake in microalgae at different seawater pH: An experimental study simulating ocean acidification
	Uddin S.; Bebhehani M.; Al-Musallam L.; Kumar V.V.; Sajid S.
发表日期	2020
ISSN	0025326X
卷号	151
英文摘要	Climate change effects such as ocean acidification (OA) are known to affect the trace metal distribution. This experimental study provides the first data on 209Po uptake rates and 210Po concentration in five microalgae species under different pH scenarios. The experiment was conducted in replicates at three pH conditions 8.2, 8.0, and 7.5, representing the current and future climate change scenario as per IPCC RCP8.5. The 209Po uptake in the phytoplankton was highest in Thalassiosira weissflogi, i.e. 83% of the 209Po tracer was taken up at 8.2 pH whereas the lowest uptake was observed in Dunaliella salina equivalent to 20% at 7.5 pH. Similar behavior was observed in 210Po concentrations in these microalgae, where 210Po ranged between 3.16 ± 0.03 and 11.6 ± 0.04 Bq kg−1 wet weight (ww), with the highest in the Thalassioria weissflogi at 8.2 pH, and the lowest in Dunaliella salina at 7.5 pH. The difference in 209Po uptake and 210Po concentration was statistically significant (p < 0.001) both among species and the pH treatments in the order: Thalassiosira weissflogi > Tetraselmis suecica > Chaetoceros muelleri > Isochrysis galbana > Dunaliella salina and 8.2 > 8.0 > 7.5. A higher concentration of 209Po in seawater was measured at low pH condition in all the experimental tanks. Though the data clearly show the difference in concentration and uptake of polonium at different pH conditions, it is not known if lower pH is affecting the adsorbed or absorbed fraction. A detailed investigation will be required to understand the process as it can have a significant effect on biomagnification and marine food chain transfer under changing climatic scenarios. © 2019 Elsevier Ltd
英文关键词	Aquaculture; Bioavailability; Marine food chain; pH
语种	英语
scopus关键词	Acidification; Algae; Aquaculture; Biochemistry; Microorganisms; pH; Seawater; Trace elements; Bioavailability; Climatic scenarios; Dunaliella salina; Food chain; Isochrysis galbana; Ocean acidifications; Tetraselmis suecica; Trace metal distribution; Climate change; polonium; sea water; polonium; sea water; aquaculture; bioaccumulation; bioavailability; biological uptake; experimental study; food chain; microalga; ocean acidification; pH; phytoplankton; polonium; seawater; acidification; alkalinity; Article; Chaetoceros; climate change; computer simulation; controlled study; Dunaliella salina; experimental study; Isochrysis galbana; microalga; nonhuman; pH measurement; phytoplankton; salinity; Tetraselmis; Thalassiosira; water analysis; chemistry; metabolism; microalga; pH; water pollutant; Chaetoceros muellerii; Dunaliella salina; Isochrysis galbana; Tetraselmis suecica; Thalassiosira; Hydrogen-Ion Concentration; Microalgae; Phytoplankton; Polonium; Seawater; Water Pollutants, Chemical
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149218
作者单位	Environment and Life Sciences Research Center, Kuwait Institute for Scientific Research, P.O. Box 24885, Safat, 13109, Kuwait
推荐引用方式 GB/T 7714	Uddin S.,Bebhehani M.,Al-Musallam L.,et al. Po uptake in microalgae at different seawater pH: An experimental study simulating ocean acidification[J],2020,151.
APA	Uddin S.,Bebhehani M.,Al-Musallam L.,Kumar V.V.,&Sajid S..(2020).Po uptake in microalgae at different seawater pH: An experimental study simulating ocean acidification.Marine Pollution Bulletin,151.
MLA	Uddin S.,et al."Po uptake in microalgae at different seawater pH: An experimental study simulating ocean acidification".Marine Pollution Bulletin 151(2020).