Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Aerosol iron speciation and seasonal variation of iron oxidation state over the western Antarctic Peninsula

Journal Article · · Science of the Total Environment
 [1];  [1];  [2];  [1];  [1]
  1. Rutgers Univ., Newark, NJ (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
The iron (Fe) speciation and oxidation state have been considered critical factors affecting Fe solubility in the atmosphere and bioavailability in the surface ocean. In this study, elemental composition and Fe speciation in aerosol samples collected at the Palmer Station in the West Antarctic Peninsula were determined using synchrotron-based X-ray fluorescence (XRF) and X-ray Absorption Near-Edge Structure (XANES) spectroscopy. The elemental composition of coarse-mode (>1 mu m) Fe-containing particles suggests that the region's crustal emission is the primary source of aerosol Fe. The Fe minerals in these aerosol particles were predominantly hematite and biotite, but minor fractions of pyrite and ilmenite were observed as well. The Fe oxidation state showed an evident seasonal variation. Further, the Fe(II) content accounted for 71% of the total Fe in the austral summer, while this fraction dropped to 60% in the austral winter. Multivariate linear models involving meteorological parameters suggested that the wind speed, relative humidity, and solar irradiance were the factors that significantly controlled the percentage of Fe(II) in the austral summer. On the contrary, no relationship was found between these factors and the Fe(II) percentage in the austral winter, suggesting that atmospheric photoreduction and regional dust emission were limited. Moreover, the snow depth was significantly (p < 0.05) correlated with the aerosol Fe concentration, confirming the limiting effect of snow/ice cover on the regional dust emission. Given that the Antarctic Peninsula has experienced rapid warming during recent decades, the ice-free areas in the Antarctic Peninsula may act as potential dust sources.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1880982
Journal Information:
Science of the Total Environment, Journal Name: Science of the Total Environment Vol. 824; ISSN 0048-9697
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (80)

The contribution of aeolian sand and dust to iron fertilization of phytoplankton blooms in southwestern Ross Sea, Antarctica journal April 2014
Spatial and particle size distributions of atmospheric dissolvable iron in aerosols and its input to the Southern Ocean and coastal East Antarctica: AEROSOL Fe ON SOUTHERN OCEAN-ANTARCTICA journal November 2013
Iron speciation in aerosol dust influences iron bioavailability over glacial-interglacial timescales: IRON SPECIATION IN ICE CORES journal April 2013
Orthomagmatic quartz and post-magmatic carbonate veins in a reported porphyry copper deposit, Andean Intrusive Suite, Livingston Island, South Shetland Islands journal May 1996
Iron photochemistry of aqueous suspensions of ambient aerosol with added organic acids journal August 1994
X-ray microprobe analysis of iron oxidation states in silicates and oxides using X-ray absorption near edge structure (XANES) journal December 1994
Speciation of iron in atmospheric aerosol samples journal March 1996
The solubility of ferric ion in marine mineral aerosol solutions at ambient relative humidities journal June 1992
Photolysis of Fe (III)-hydroxy complexes as sources of OH radicals in clouds, fog and rain journal January 1990
Factors influencing aerosol solubility during cloud processes journal July 2001
Characterization of hematite dissolution affected by oxalate coating, kinetics and pH journal April 2008
PM2.5 aerosols collected in the Antarctic Peninsula with a solar powered sampler during austral summer periods journal November 2009
Iron speciation in urban dust journal August 2011
Variability of dust iron solubility in atmospheric waters: Investigation of the role of oxalate organic complexation journal November 2011
Iron speciation in particulate matter (PM2.5) from urban Los Angeles using spectro-microscopy methods journal January 2021
Multiple sources supply eolian mineral dust to the Atlantic sector of coastal Antarctica: Evidence from recent snow layers at the top of Berkner Island ice sheet journal March 2010
Fractional solubility of aerosol iron: Synthesis of a global-scale data set journal July 2012
Climate warming and permafrost dynamics in the Antarctic Peninsula region journal January 2013
Modern and Holocene aeolian dust variability from Talos Dome (Northern Victoria Land) to the interior of the Antarctic ice sheet journal March 2013
Contribution of Water-Soluble Organic Matter from Multiple Marine Geographic Eco-Regions to Aerosols around Antarctica journal June 2020
Influence of Atmospheric Processes on the Solubility and Composition of Iron in Saharan Dust journal June 2016
Atmospheric Processing of Combustion Aerosols as a Source of Bioavailable Iron journal February 2015
Stable Isotope Ratios of Combustion Iron Produced by Evaporation in a Steel Plant journal February 2019
Photoreduction of iron oxyhydroxides in the presence of important atmospheric organic compounds journal September 1993
Solubility of Hematite Revisited:  Effects of Hydration journal September 2007
Solubility of Iron from Combustion Source Particles in Acidic Media Linked to Iron Speciation journal September 2012
Photoreductive Dissolution of Iron Oxides Trapped in Ice and Its Environmental Implications journal June 2010
Iron supply and demand in the upper ocean journal March 2000
Seasonal distributions of aeolian iron fluxes to the global ocean journal January 2001
Anthropocene changes in desert area: Sensitivity to climate model predictions journal January 2007
Mineralogy as a critical factor of dust iron solubility: MINERALOGY AND DUST IRON SOLUBILITY journal April 2008
Glacial flour dust storms in the Gulf of Alaska: Hydrologic and meteorological controls and their importance as a source of bioavailable iron: GLACIAL FLOUR DUST IN GULF OF ALASKA journal March 2011
Particle‐Size Distributions and Solubility of Aerosol Iron Over the Antarctic Peninsula During Austral Summer journal June 2020
Photoreduction of iron(III) in marine mineral aerosol solutions journal May 1993
Iron deficiency limits phytoplankton growth in the north-east Pacific subarctic journal January 1988
Evolution of the nitrogen cycle and its influence on the biological sequestration of CO2 in the ocean journal May 1997
The integral role of iron in ocean biogeochemistry journal March 2017
Climate change drives expansion of Antarctic ice-free habitat journal June 2017
Role of biogenic silica in the removal of iron from the Antarctic seas journal June 2013
Central West Antarctica among the most rapidly warming regions on Earth journal December 2012
Acceleration of snow melt in an Antarctic Peninsula ice core during the twentieth century journal April 2013
Iron solubility driven by speciation in dust sources to the ocean journal April 2009
Seabird colonies as important global drivers in the nitrogen and phosphorus cycles journal January 2018
Particle-Size Variability of Aerosol Iron and Impact on Iron Solubility and Dry Deposition Fluxes to the Arctic Ocean journal November 2019
20th-Century doubling in dust archived in an Antarctic Peninsula ice core parallels climate change and desertification in South America journal March 2007
Highly bioavailable dust-borne iron delivered to the Southern Ocean during glacial periods journal October 2018
Four decades of Antarctic Ice Sheet mass balance from 1979–2017 journal January 2019
Mapping alteration mineral zones and lithological units in Antarctic regions using spectral bands of ASTER remote sensing data journal July 2017
ATHENA , ARTEMIS , HEPHAESTUS : data analysis for X-ray absorption spectroscopy using IFEFFIT journal June 2005
Seasonal variability of crustal and marine trace elements in the aerosol at Neumayer station, Antarctica journal January 2008
Size distribution, mass concentration, chemical and mineralogical composition and derived optical parameters of the boundary layer aerosol at Tinfou, Morocco, during SAMUM 2006 journal January 2009
Particle chemical properties in the vertical column based on aircraft observations in the vicinity of Cape Verde Islands journal January 2011
Individual-particle analysis of airborne dust samples collected over Morocco in 2006 during SAMUM 1 journal January 2011
High particulate iron(II) content in glacially sourced dusts enhances productivity of a model diatom journal June 2017
Pyrogenic iron: The missing link to high iron solubility in aerosols journal May 2019
Southern Ocean Iron Enrichment Experiment: Carbon Cycling in High- and Low-Si Waters journal April 2004
Global Iron Connections Between Desert Dust, Ocean Biogeochemistry, and Climate journal April 2005
Mesoscale Iron Enrichment Experiments 1993-2005: Synthesis and Future Directions journal February 2007
Chemically and Geographically Distinct Solid-Phase Iron Pools in the Southern Ocean journal November 2012
Ocean forcing of glacier retreat in the western Antarctic Peninsula journal July 2016
Rapid Environmental Changes in the Western Antarctic Peninsula Region due to Climate Change and Human Activity journal January 2017
FactoMineR : An R Package for Multivariate Analysis journal January 2008
An occurrence of molybdenum, copper, and iron mineralization in the Argentine Islands, West Antarctica journal July 1981
Oxidation state and coordination of Fe in minerals: An Fe K- XANES spectroscopic study journal May 2001
Sources of iron for pyrite formation in marine sediments journal March 1998
Monitoring of atmospheric aerosol particles on the Antarctic Peninsula journal January 1998
Climate-change indicators from archival aerial photography of the Antarctic Peninsula journal January 1998
Characterization of Atmospheric Iron Speciation and Acid Processing at Metropolitan Newark on the US East Coast journal March 2017
Enhanced Iron Solubility at Low pH in Global Aerosols journal May 2018
Postglacial marine environmental changes in Maxwell Bay, King George Island, West Antarctica journal January 2003
Atmospheric trace elements in aerosols observed over the Southern Ocean and coastal East Antarctica journal January 2014
Trace elements and individual particle analysis of atmospheric aerosols from the Antarctic peninsula journal January 1992
Atmospheric transport of iron and its deposition in the ocean journal December 1991
A combined observational and modeling approach to study modern dust transport from the Patagonia desert to East Antarctica journal January 2010
Change of iron species and iron solubility in Asian dust during the long-range transport from western China to Japan journal January 2011
Characterization of iron speciation in urban and rural single particles using XANES spectroscopy and micro X-ray fluorescence measurements: investigating the relationship between speciation and fractional iron solubility journal January 2012
Delivery of anthropogenic bioavailable iron from mineral dust and combustion aerosols to the ocean journal January 2016
Seasonal variations in physical characteristics of aerosol particles at the King Sejong Station, Antarctic Peninsula journal January 2017
Concentrations, particle-size distributions, and dry deposition fluxes of aerosol trace elements over the Antarctic Peninsula in austral summer journal February 2021
Interpreting last glacial to Holocene dust changes at Talos Dome (East Antarctica): implications for atmospheric variations from regional to hemispheric scales journal April 2012

Similar Records

Sources and levels of ambient ocean sound near the antarctic peninsula
Journal Article · Tue Apr 14 00:00:00 EDT 2015 · PLoS ONE · OSTI ID:1184780

Antarctic sea ice and temperature variations
Technical Report · Sat Feb 29 23:00:00 EST 1992 · OSTI ID:7161487

Organic bromine compounds produced in sea ice in Antarctic winter
Journal Article · Mon Dec 10 23:00:00 EST 2018 · Nature Communications · OSTI ID:1624121