X-ray photoelectron spectroscopy (XPS) has been used to determine the species present in urban particulate matter collected in the city of Cagliari (Sardinia, Italy) and in an industrial area near to Cagliari. Samples were collected on both cellulose and glass fiber filters. Elemental identification
Surface analysis of combustion-generated soot particles by X-ray photoelectron spectroscopy
โ Scribed by Reza Toossi
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 592 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0010-2180
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โฆ Synopsis
Soot generated from an acetylene/air premixed flame stabilized over a flat flame burner and collected on a silver substrate was studied by ESCA. Effects of equivalence ratios on the surface-adsorbed oxygenated complexes were investigated. It was concluded that finer soot particles, generated at lower equivalence ratios (rich in oxygen), contained higher concentrations of these species and therefore were more reactive. The implications of these findings on the role of particulate carbon generated from various combustion sources are discussed.
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Molybdenum (Mo) is known for its roles in microbial enzymes and in enhancing the corrosion resistance of engineering alloys. In this study, Mo coupons were exposed to a sulfate-reducing bacterial (SRB) culture Desulfovibrio desulfuricans and then changes in surface chemical states were analyzed by X