| 摘要: |
| Fe是海洋浮游植物生长所必需的营养元素, 而Fe(Ⅱ)是可以被直接吸收利用的形态。由于Fe(Ⅱ)处于氧化还原的中间状态, 且在产生和转化的过程中, 与NO3-的还原和NH4+的氧化密切相关。因此, 研究Fe(Ⅱ)的产生及消亡机制对于研究海区内的初级生产力及海洋中的C、N元素循环具有重要意义。而目前对于海水中Fe(Ⅱ)的迁移转化机制报道尚少。本文详细论述了海洋中Fe(Ⅱ)的产生机制及Fe(Ⅱ)的化学行为, 重点探讨了厌氧微生物催化下, 异化还原和铁氨氧化还原对Fe(Ⅱ)产生、消亡等循环过程的作用, 以及对周围环境中N移除的影响。 |
| 关键词: Fe(Ⅱ) 微生物活动 N移除 |
| DOI：10.11759/hykx20170428001 |
| 分类号: |
| 基金项目:青岛海洋科学与技术国家实验室海洋地质过程与环境功能实验室开放基金资助项目(MGQNLM-KF201701) |
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| A review of the behavior and microbial activity of Fe(Ⅱ) in seawater |
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QU Sheng-lu,YANG Ru-jun,SU Han,LIU Yuan,GENG Qian-qian
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| Abstract: |
| Iron is a necessary nutrient for marine phytoplankton growth. The middle redox state of iron, Fe(Ⅱ), can be directly absorbed by organisms and is closely related to the NO3- reduction and NH4+ oxidation processes in seawater during its generation and transformation. Therefore, studies on Fe(Ⅱ) generation and decay mechanisms are of great significance while investigating primary productivity and C/N circulation in the ocean. At present, the migration transformation mechanism of Fe(Ⅱ) in seawater has not been reported much. This paper discusses the generation mechanisms and chemical behavior of Fe(Ⅱ) in seawater in detail and investigates the role of anaerobic microbial catalysis activities, such as dissimilatory reduction and Feammox, in the generation and decay of Fe(Ⅱ) and its influence on nitrogen removal in the surrounding environment. |
| Key words: Fe(Ⅱ) microbial activities nitrogen removal |
