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| Titel |
Sulfur-containing particles emitted by concealed sulfide ore deposits: an unknown source of sulfur-containing particles in the atmosphere |
| VerfasserIn |
J. J. Cao, Y. K. Li, T. Jiang, G. Hu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 15, no. 12 ; Nr. 15, no. 12 (2015-06-26), S.6959-6969 |
| Datensatznummer |
250119852
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| Publikation (Nr.) |
 copernicus.org/acp-15-6959-2015.pdf |
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| Zusammenfassung |
| Sources of sulfur dioxide, sulfates, and organic sulfur compounds, such as
fossil fuels, volcanic eruptions, and animal feeding operations, have
attracted considerable attention. In this study, we collected particles
carried by geogas flows ascending through soil, geogas flows above the soil
that had passed through the soil, and geogas flows ascending through deep
faults of concealed sulfide ore deposits, and analysed them using
transmission electron microscopy. Numerous crystalline and amorphous
sulfur-containing particles or particle aggregations were found in the
ascending geogas flows. In addition to S, the particles contained O, Ca, K,
Mg, Fe, Na, Pb, Hg, Cu, Zn, As, Ti, Sr, Ba, Si, etc. Such particles are
usually a few to several hundred nanometres in diameter with either regular
or irregular morphology. The sulfur-containing particles originated from
deep-seated weathering or faulting products of concealed sulfide ore
deposits. The particles suspended in the ascending geogas flow migrated
through faults from deep-seated sources to the atmosphere. This is a
previously unknown source of the atmospheric particles. This paper reports,
for the first time, the emission of sulfur-containing particles into the
atmosphere from concealed sulfide ore deposits. The climatic and ecological
influences of these sulfur-containing particles and particle aggregations
should be assessed. |
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