Minor effect of physical size sorting on iron solubility of transported mineral dust

Z. B. Shi; M. T. Woodhouse; K. S. Carslaw; M. D. Krom; G. W. Mann; A. R. Baker; I. Savov; G. Fones; B. Brooks; T. D. Jickells; L. G. Benning

doi:10.5194/acpd-11-14309-2011

Minor effect of physical size sorting on iron solubility of transported mineral dust

Z. B. Shi, M. T. Woodhouse, K. S. Carslaw, M. D. Krom, G. W. Mann, A. R. Baker, I. Savov, G. Fones, B. Brooks, T. D. Jickells, L. G. Benning

Research output: Working paper › Preprint

43 Citations (Scopus)

Abstract

Observations show that the fractional solubility of Fe (FS-Fe, ratio of dissolved to total Fe) in dust aerosol increases dramatically from ~0.1% in regions of high dust mass concentration to 80% in remote regions where concentrations are low. Here, we combined laboratory geochemical measurements with global aerosol model simulations to test the hypothesis that the increase in FS-Fe is due to physical size sorting during transport. We determined the FS-Fe and fractional solubility of Al (FS-Al) in size-fractionated dust generated from two representative soil samples collected from known Saharan dust source regions using a customized dust re-suspension and collection system. The results show that the FS-Fe is size-dependent and ranges from 0.1-0.3 % in the coarse size fractions (>1 µm) to ~0.2-0.8 % in the fine size fractions (

Original language	English
Publisher	Copernicus Publications
Pages	14309-14338
Number of pages	30
Volume	11
DOIs	https://doi.org/10.5194/acpd-11-14309-2011
Publication status	Published - 2011

Publication series

Name	Atmospheric Chemistry and Physics Discussions
Publisher	Copernicus GmbH
ISSN (Print)	1680-7375

Access to Document

10.5194/acpd-11-14309-2011Licence: CC BY

43 Citations (Scopus)
1 Article

Minor effect of physical size sorting on iron solubility of transported mineral dust
Shi, Z. B., Woodhouse, M. T., Carslaw, K. S., Krom, M. D., Mann, G. W., Baker, A. R., Savov, I., Fones, G. R., Brooks, B., Drake, N., Jickells, T. D. & Benning, L. G., 19 Aug 2011, In: Atmospheric Chemistry and Physics. 11, 16, p. 8459-8469 11 p.
Research output: Contribution to journal › Article › peer-review

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Cite this

Shi, Z. B., Woodhouse, M. T., Carslaw, K. S., Krom, M. D., Mann, G. W., Baker, A. R., Savov, I., Fones, G., Brooks, B., Jickells, T. D., & Benning, L. G. (2011). Minor effect of physical size sorting on iron solubility of transported mineral dust. (5 ed.) (pp. 14309-14338). (Atmospheric Chemistry and Physics Discussions). Copernicus Publications. https://doi.org/10.5194/acpd-11-14309-2011

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title = "Minor effect of physical size sorting on iron solubility of transported mineral dust",

abstract = "Observations show that the fractional solubility of Fe (FS-Fe, ratio of dissolved to total Fe) in dust aerosol increases dramatically from ~0.1% in regions of high dust mass concentration to 80% in remote regions where concentrations are low. Here, we combined laboratory geochemical measurements with global aerosol model simulations to test the hypothesis that the increase in FS-Fe is due to physical size sorting during transport. We determined the FS-Fe and fractional solubility of Al (FS-Al) in size-fractionated dust generated from two representative soil samples collected from known Saharan dust source regions using a customized dust re-suspension and collection system. The results show that the FS-Fe is size-dependent and ranges from 0.1-0.3 % in the coarse size fractions (>1 µm) to ~0.2-0.8 % in the fine size fractions (",

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AU - Krom, M. D.

AU - Mann, G. W.

AU - Baker, A. R.

AU - Savov, I.

AU - Fones, G.

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AB - Observations show that the fractional solubility of Fe (FS-Fe, ratio of dissolved to total Fe) in dust aerosol increases dramatically from ~0.1% in regions of high dust mass concentration to 80% in remote regions where concentrations are low. Here, we combined laboratory geochemical measurements with global aerosol model simulations to test the hypothesis that the increase in FS-Fe is due to physical size sorting during transport. We determined the FS-Fe and fractional solubility of Al (FS-Al) in size-fractionated dust generated from two representative soil samples collected from known Saharan dust source regions using a customized dust re-suspension and collection system. The results show that the FS-Fe is size-dependent and ranges from 0.1-0.3 % in the coarse size fractions (>1 µm) to ~0.2-0.8 % in the fine size fractions (

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