Photoreductive dissolution of Fe-containing mineral dust particles in acidic media
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چکیده
منابع مشابه
Pyrite dissolution in acidic media
Oxidation of pyrite in aqueous solutions in contact with air (oxygen 20%) was studied at 25°C using short-term batch experiments. Fe and SO4 2 were the only dissolved Fe and S species detected in these solutions. After a short period, R [S]tot/[Fe]tot stabilized from 1.25 at pH 1.5 to 1.6 at pH 3. These R values were found to be consistent with previously published measurements (as calculated f...
متن کاملComment on ‘‘Pyrite dissolution in acidic media’’ by M. Descostes,
In a recent paper, Descostes et al. (2004) present data on a series of pyrite oxidation batch experiments conducted near pH 2 and 3 where they demonstrate very well the non-stoichiometric dissolution/oxidation of pyrite in acidic solutions through an extensive laboratory investigation of S/Fe ratios. The authors utilized this data to propose a ‘mechanism’ of pyrite oxidation based on these data...
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Introduction Conclusions References
متن کاملIce nucleation of ammonia gas exposed montmorillonite mineral dust particles
The ice nucleation characteristics of montmorillonite mineral dust aerosols with and without exposure to ammonia gas were measured at different atmospheric temperatures and relative humidities with a continuous flow diffusion chamber. The montmorillonite particles were exposed to pure (100%) and diluted ammonia gas (25 ppm) at room temperature in a stainless steel chamber. There was no signific...
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Effect of humidity on nitric acid uptake to mineral dust aerosol particles A. Vlasenko, S. Sjogren, E. Weingartner, K. Stemmler, H. W. Gäggeler, and M. Ammann Laboratory of Radioand Environmental chemistry, Paul Scherrer Institute, Villigen, Switzerland Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, Villigen, Switzerland Department of Chemistry and Biochemistry, University of Ber...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2010
ISSN: 0148-0227
DOI: 10.1029/2009jd012702