2015 Fiscal Year Final Research Report
Iron uptake model by phytoplankton in actual natural water based on chemical kinetics
Project/Area Number |
25709045
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Partial Multi-year Fund |
Research Field |
Civil and environmental engineering
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Research Institution | Tokyo Institute of Technology |
Principal Investigator |
Fujii Manabu 東京工業大学, 理工学研究科, 特任准教授 (30598503)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Keywords | 鉄 / 藻類 / 反応速度論 / 化学反応 / 鉄摂取モデル / 腐植物質 / 競合金属 |
Outline of Final Research Achievements |
Iron is important factor that control growth and metabolism of phytoplankton in natural waters. Therefore, iron chemical dynamics and bioavailablity have been investigated for the last few decades. Yet, effects of water and environmental factors on iron uptake in actual water environment remained largely unclear, partially because humic substances and other water quality factors were not considered in the previous model where synthetic ligands were often used. In this study, kinetic model for iron transformation and bioavailability was developed based on the kinetic data from phytoplankton incubational experiment under actual natural water conditions where concentrations of humic substances and other water quality factors were manipulated. One of results indicated that phytoplankton is capable of acquiring iron at sufficient amount even under the dark condition, as dark reduction in the presence of humic substances sufficiently produces biologically available ferrous iron form.
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Free Research Field |
土木工学・土木環境システム
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