期刊
ELEMENTS
卷 7, 期 2, 页码 101-106出版社
MINERALOGICAL SOC AMER
DOI: 10.2113/gselements.7.2.101
关键词
iron (oxyhydr)oxide; nanoparticle; estuaries; shelf sources; wind-blown dust; icebergs; iron cycle
资金
- Leverhulme Trust
The biogeochemical cycle of iron plays a key role in the ocean by delivering bioavailable iron that controls plankton productivity. Transport through the iron cycle occurs mainly as nanoparticulate (oxyhydr)-oxides, which are physically and chemically intermediate between aqueous and particulate forms and can be directly or indirectly bioavailable. iron nanoparticles transform with time to more stable forms by increased crystallinity, aggregation and growth, and they also alter to other nanominerals. These age transformations can be inhibited or reversed. The resulting aging-rejuvenation cycle first produces stability during long-distance transport and then reverses the process such that bioavailable and labile iron can be produced and delivered to the open ocean.
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