Atmospheric induced nanoparticles due to the urban street dust
| Autor: | Dana Florina Muntean, Ioan Petean, Maria Tomoaia-Cotisel, Alexandra Gertrud Paltinean, George Arghir, Liviu-Dorel Bobos |
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| Rok vydání: | 2015 |
| Předmět: |
Calcite
Materials science 010504 meteorology & atmospheric sciences General Chemical Engineering Muscovite Energy-dispersive X-ray spectroscopy Mineralogy Nanoparticle 010501 environmental sciences engineering.material 01 natural sciences chemistry.chemical_compound chemistry engineering Kaolinite Lepidocrocite Quartz Scherrer equation 0105 earth and related environmental sciences |
| Zdroj: | Particulate Science and Technology. 34:580-585 |
| ISSN: | 1548-0046 0272-6351 |
| Popis: | Urban street dust (SD) represents a natural source of mineral floating particles (FP) in the atmosphere. The FP particles have usually a wide range of sizes. These particles were monitored and collected by automatic stations in Cluj-Napoca, Romania. The SD and FP samples were investigated by XRD and SEM-EDX analysis. The obtained results prove that both, SD and FP, have a similar composition, namely quartz, clay particles (e.g., muscovite, and kaolinite), calcite, and trace of lepidocrocite. Nanostructural features and fine micro-scaled particles are observed. Quartz and clay nanoparticles were found in SD samples as well as in FP samples. The AFM investigation reveals a nano-size range for quartz particles between 80–90 nm, and 40–60 nm diameter for clay particles. Similar values were obtained by TEM microscopy. The high resolution microscopy results were confirmed by the values obtained by Scherrer formula applied to the XRD patterns. Composition and dimensional similarities found for the nanopa... |
| Databáze: | OpenAIRE |
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