Volcanic emissions and atmospheric pollution: A study of nanoparticles

Trejos, Erika M.; Silva, Luis; Hower, James C.; Flores, Eriko M.M.; González, C.; Pachón, Jorge E.; Aristizábal, Beatriz Helena

doi:10.1016/j.gsf.2020.08.013

Cited by 41 publications

(27 citation statements)

References 51 publications

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“…July-December, 2021 Doi: https://dx.doi.org/10.15359/ru.35-2.14 URL: https://www.revistas.una.ac.cr/uniciencia E-ISSN: 2215-3470 Email: revistauniciencia@una.cr CC: BY-NC-ND 10 Figure 5. Sections of a cinder obtained by FEG-SEM at 10kV where one can observe a thin layer formed by grains Furthermore, similar to analogue studies of volcanic lava tubes and other volcanic environments or features on earth compared with other planets or moons (Keszthelyi, 1995;Keszthelyi et al, 2006;Léveillé and Datta, 2010;Squyres et al, 2007;Wilson and Head, 1994) or nanoparticles (Trejos E.M. et al, 2021). The obtained results may help to better characterize similar volcanic ejecta and their origin in other planetary environments, with similar or projected climate variations and subsequent conservation stages (Jakosky and Phillips, 2001;McCanta et al, 2014;Morris et al, 2000;Poulet, Bibring, and Mustard, 2005).…”

Section: Analysis and Resultssupporting

confidence: 64%

Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands

et al. 2021

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Volcanic cinder, also known as scoria, is an extrusive igneous rock that forms when gas-rich magmas of basaltic or andesitic composition cool quickly. It is typically dark in color, ranging from black to red depending on its chemical composition. Sometimes fresh cinder samples show a variety of shiny metallic colors on its surface ranging from blue to gold to silver. The origin of these colors has remained unknown up to now. Cinder samples from an eruptive event occurred in October 2005 have been collected in the surroundings of the Sierra Negra volcano in the Galápagos Islands. The samples’ crystallographic structure, chemical composition, and surface morphology have been analyzed using X-Ray diffractometry (XRD), energy dispersive X-Ray spectroscopy (EDS) and a field gun emission scanning electron microscopy (SEM), respectively. Based on an extensive physical and chemical analysis, we were able to demonstrate that these colors are due to a light interference phenomenon. These results have a great potential to be used for a wide variety of purposes such as determining the temperature and composition of magma and evaluating volcanic samples for planetary studies.

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Section: Analysis and Resultssupporting

confidence: 64%

Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands

et al. 2021

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“…In effect, previous studies in the Manizales area have highlighted the presence of high contents of Si, Al, and Fe, as well as compounds such as plagioclase feldspar (Ca-Na) and volcanic glass, among others, in the chemical composition of the soil derived from volcanic ash [47]. Likewise, Trejos et al [36] found traces of volcanic ash, such as hydrated complexes of Al, Si, and K; heavy metals like As, Hg, Cd, and Pb; and specific compounds, such as ammonia salt and plagioclase feldspar (Ca-Na), in soil dust from Manizales. This volcanic influence may explain the higher loads of Al, K, and Na in Manizales in comparison to Bogotá (Figure 7).…”

Section: Chemical Profilementioning

confidence: 96%

“…PM 10 losses by sedimentation in the deposition chamber have been shown to be negligible (on average only 0.6% and 0.1% (in volume) of samples sieved at 250 µm and 63 µm, respectively) [35]. The surroundings to the sampling point were observed for safety, traffic characteristics, road condition, and land-use types [23,36].…”

Section: Road Dust Samplingsmentioning

confidence: 99%

“…Antimony was, in particular, the element that recorded the highest levels of enrichment in Bogotá (EF = 271), and it was among the highest in Manizales (EF = 130). Despite the relatively low number of vehicles (169,142), the complex topography and steep roads in Manizales imply the heavy use of brakes [36]. In Bogotá, the greater vehicular volume (approximately 2 million vehicles) and traffic congestion explain the frequent use of brakes.…”

Section: Source Exploration By Efsmentioning

confidence: 99%

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Spatial Distribution and Chemical Composition of Road Dust in Two High-Altitude Latin American Cities

et al. 2021

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Road dust (RD) resuspension is one of the main sources of particulate matter in cities with adverse impacts on air quality, health, and climate. Studies on the variability of the deposited PM10 fraction of RD (RD10) have been limited in Latin America, whereby our understanding of the central factors that control this pollutant remains incomplete. In this study, forty-one RD10 samples were collected in two Andean cities (Bogotá and Manizales) and analyzed for ions, minerals, and trace elements. RD10 levels varied between 1.8–45.7 mg/m2, with an average of 11.8 mg/m2, in Bogotá and between 0.8–26.7 mg/m2, with an average of 5.7 mg/m2, in Manizales. Minerals were the most abundant species in both cities, with a fraction significantly larger in Manizales (38%) than Bogotá (9%). The difference could be explained mainly by the complex topography and the composition of soil derived from volcanic ash in Manizales. The volcanic activity was also associated with SO4⁻2 and Clˉ. Enrichment factors and principal component analysis were conducted to explore potential factors associated to sources of RD10. Elements such as Cu, Pb, Cr, Ni, V, Sb, and Mo were mainly associated with exhaust and non-exhaust traffic emissions.

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“…Soil transmission is partly similar to the airborne transmission route, whereby contaminated soils have the potential to be resuspended and inhaled by humans and animals ( Donado et al, 2021 , Trejos et al, 2021 ). Another component of transmission is water runoff to the soil, where wastewater treatment is lacking.…”

Section: Overview Of Possible Transmission Pathwaysmentioning

confidence: 99%

The role of airborne particles and environmental considerations in the transmission of SARS-CoV-2

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Ge²,

Jones³

et al. 2021

Geoscience Frontiers

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Volcanic emissions and atmospheric pollution: A study of nanoparticles

Cited by 41 publications

References 51 publications

Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands

Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands

Spatial Distribution and Chemical Composition of Road Dust in Two High-Altitude Latin American Cities

The role of airborne particles and environmental considerations in the transmission of SARS-CoV-2

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