DOI: 10.1002/2013GL057713
论文题名: Source apportionment of aerosol iron in the marine environment using iron isotope analysis
作者: Mead C. ; Herckes P. ; Majestic B.J. ; Anbar A.D.
刊名: Geophysical Research Letters
ISSN: 0094-8406
EISSN: 1944-8137
出版年: 2013
卷: 40, 期: 21 起始页码: 5722
结束页码: 5727
语种: 英语
英文关键词: aerosols
; iron isotopes
; iron limitation
Scopus关键词: Aerosol samples
; Aerosol sampling
; Iron isotopes
; Iron-limitation
; Isotope analysis
; Marine environment
; Phytoplankton growth
; Source apportionment
; Aerosols
; Dust
; Fly ash
; Iron
; Isotopes
; Phytoplankton
; Soils
; Iron analysis
; aerosol
; biomass burning
; growth response
; iron
; isotopic analysis
; marine environment
; nutrient cycling
; nutrient limitation
; phytoplankton
; pollutant source
; radioactive pollution
; soil pollution
; solubilization
英文摘要: Iron (Fe) is a critical nutrient for phytoplankton. In the open ocean, this demand coupled with scarce supply often makes Fe the limiting factor in phytoplankton growth. The largest source, by mass, of Fe to the open ocean is windblown soil dust, but this Fe is much less soluble than Fe from other aerosol sources. Therefore, to fully understand how Fe reaches this ecosystem, it is necessary to understand the range of sources of aerosol Fe. To do this, we collected size-segregated aerosol samples from Bermuda and analyzed them to determine their Fe isotope composition. From this analysis, we found clear evidence in the fine size fraction (< 2.5 μm) of an important non-soil-dust Fe source. Our isotope analysis of multiple oil and coal fly ashes shows that those materials cannot explain our finding. We suggest biomass burning as the most likely source. Key Points Iron isotope analysis reveals information about aerosol source Size-segregated aerosol sampling is essential to measuring non soil dust sources Biomass burning may be the source of isotopically light iron in Bermuda ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887113989&doi=10.1002%2f2013GL057713&partnerID=40&md5=3ddea9331834fb40fcf71ee8dce03b48
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5670
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth and Space Exploration, Arizona State University, PO Box 871404, Tempe, AZ 85287-0000, United States
Recommended Citation:
Mead C.,Herckes P.,Majestic B.J.,et al. Source apportionment of aerosol iron in the marine environment using iron isotope analysis[J]. Geophysical Research Letters,2013-01-01,40(21).