Iron Solubility Related to Particle Sulfur Content in Source Emission and Ambient Fine Particles

The chemical factors influencing iron solubility (soluble iron/total iron) were investigated in source emission (e.g., biomass burning, coal fly ash, mineral dust, and mobile exhaust) and ambient (Atlanta, GA) fine particles (PM2.5). Chemical properties (speciation and mixing state) of iron-containi...

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Bibliographic Details
Published in:Environmental science & technology 2012-06, Vol.46 (12), p.6637-6644
Main Authors: Oakes, M, Ingall, E. D, Lai, B, Shafer, M. M, Hays, M. D, Liu, Z. G, Russell, A. G, Weber, R. J
Format: Article
Language:English
Subjects:
Air Pollutants
Applied sciences
Atmospheric pollution
Biomass
Electrons
Emissions
Exact sciences and technology
Fly ash
Iron
Iron - chemistry
Leaching
Nanoparticles
Particle Size
Pollutants physicochemistry study: properties, effects, reactions, transport and distribution
Pollution
Solubility
Sulfur - analysis
Sulfur content
X-Ray Absorption Spectroscopy
X-rays
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Summary:The chemical factors influencing iron solubility (soluble iron/total iron) were investigated in source emission (e.g., biomass burning, coal fly ash, mineral dust, and mobile exhaust) and ambient (Atlanta, GA) fine particles (PM2.5). Chemical properties (speciation and mixing state) of iron-containing particles were characterized using X-ray absorption near edge structure (XANES) spectroscopy and micro-X-ray fluorescence measurements. Bulk iron solubility (soluble iron/total iron) of the samples was quantified by leaching experiments. Major differences were observed in iron solubility in source emission samples, ranging from low solubility (
ISSN:0013-936X
1520-5851
DOI:10.1021/es300701c