Geochemical features of aerosols in Santiago de Chile from time series analysis

Valdés, A.; Polvé, Mireille; Munoz, Marguerite; Toutain, Jean; Morata, Diego

doi:10.1007/s12665-013-2415-y

Cited by 11 publications

(4 citation statements)

References 42 publications

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“…The V in PM 10 was likely originated from fossil fuel combustion. The averaged air concentration of V at Arequipa was 19 ng/m 3 , 38 times higher than the measured values at Santiago, Chile [49], which showed an average V concentration of 0.5 ng/m 3 , suggesting even stronger local V emissions in Arequipa. Previous studies have suggested that during fossil fuel combustion, 69% of V contained in fossil fuel could be emitted into the atmosphere [50]; therefore, the fossil fuel combustion at our sampling sites should be an important V source.…”

Section: Trace Elements In Pm 10mentioning

confidence: 56%

Geochemical Characterization and Heavy Metal Sources in PM10 in Arequipa, Peru

Michalski

Olson

et al. 2021

Atmosphere

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Particulate matter smaller than 10 μm (PM10) is an important air pollutant that adversely affects human health by increasing the risk of respiratory and cardiovascular diseases. Recent studies reported multiple extreme PM10 levels at high altitude Peruvian cities, which resulted from a combination of high emissions and limited atmospheric circulation at high altitude. However, the emission sources of the PM10 still remain unclear. In this study, we collected PM10 samples from four sites (one industrial site, one urban site, and two rural sites) at the city of Arequipa, Peru, during the period of February 2018 to December 2018. To identify the origins of PM10 at each site and the spatial distribution of PM10 emission sources, we analyzed major and trace element concentrations of the PM10. Of the observed daily PM10 concentrations at Arequipa during our sampling period, 91% exceeded the World Health Organization (WHO) 24-h mean PM10 guideline value, suggesting the elevated PM10 strongly affected the air quality at Arequipa. The concentrations of major elements, Na, K, Mg, Ca, Fe, and Al, were high and showed little variation, suggesting that mineral dust was a major component of the PM10 at all the sites. Some trace elements, such as Mn and Mo, originated from the mineral dust, while other trace elements, including Pb, Sr, Cu, Ba, Ni, As and V, were from additional anthropogenic sources. The industrial activities at Rio Seco, the industrial site, contributed to significant Pb, Cu, and possibly Sr emissions. At two rural sites, Tingo Grande and Yarabamba, strong Cu emissions were observed, which were likely associated with mining activities. Ni, V, and As were attributed to fossil fuel combustion emissions, which were strongest at the Avenida Independencia urban site. Elevated Ba and Cu concentrations were also observed at the urban site, which were likely caused by heavy traffic in the city and vehicle brake wear emissions.

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Section: Trace Elements In Pm 10mentioning

confidence: 56%

Geochemical Characterization and Heavy Metal Sources in PM10 in Arequipa, Peru

Michalski

Olson

et al. 2021

Atmosphere

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“…4) were observed. LREEs are commonly used as catalyst modifiers in hydrocarbon cracking, with catalysts containing La and Ce in proportions of 70% and 20%, respectively, with La/Ce > 1 (Bozlaker et al 2013;Moreno et al 2008;Valdes et al 2013). Cracking catalysts are often produced as superfine powders, with spherical particle sizes ranging from 1 to 150 μm in diameter.…”

Section: Ree Ratiosmentioning

confidence: 99%

“…Areas with potential environmental problems include cities with large populations, extensive infrastructure, manufacturing industries, and sources of industrial waste (Dai et al 2016;Valdes et al 2013;Zhu et al 2016). Large cities are also influenced by factors related to the variety of geological materials and sedimentary deposits on which they are situated (Duplaya et al 2014;Radomskaya et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Rare earth elements in poplar leaves as indicators of geological environment and technogenesis

Yusupov

Baranovskaya

Robertus

et al. 2020

Environ Sci Pollut Res

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Background and anomalous rare earth element (RЕЕ) concentrations in poplar (Populus spp.) leaves in urban areas of Siberia, Russian Far East, and Kazakhstan were determined. Regions with the highest RЕЕ levels were identified. Ratios of light to middle RЕЕs are geochemical indicators of the impacts of oil refining and mining. Airborne dust transport by prevailing winds from ash and slag dumps of power plants and industrial sites, and alluvial terraces control the REE distribution in cities. Keywords Rare earth elements (REE). Indicator ratios. Poplar leaves. Urban areas. Geological environment. Technogenesis

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“…Other sources may have anthropogenic origins such as particles from construction, vehicle emissions (including pavement wear and components from tires and brakes), and industrial and residential emissions (including domestic and organic waste) (Gurugubelli, Pervez, & Tiwari, 2013; Pandey, Tripathi, & Mishra, 2008; Sharma, Singh, & Kulshrestha, 2017). SPM can also have natural origins, for example, from forest fires, volcano emissions, marine aerosols, sandstorms, plant detritus, and biogenic emissions (Balasubramanian, Victor, & Begum, 1999; Naddafi, Nabizadeh, Soltanianzadeh, & Ehrampoosh, 2006; Nriagu, 1989; Reheis, 2006; Valdés, Polvé, Munoz, Toutain, & Morata, 2013). All these contributors, regardless of their origin, modify the SPM's chemical composition and, subsequently, its sedimentation modifies the chemical composition of soil dust.…”

Section: Introductionmentioning

confidence: 99%

Sedimentation rate of settleable particulate matter in Santiago city, Chile

Morales-Casa

Barraza

Collante³

et al. 2020

Environmental Quality Mgmt

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Settleable particulate matter (SPM) is an atmospheric pollutant harmful to human health and the environment in high concentrations. Despite this fact, no up-to-date information on SPM levels exists for the capital of Chile, Santiago (7 million inhabitants). To address this knowledge gap, SPM sedimentation rates, including soluble and insoluble components, were measured at three different urban sites from July to November of 2016. We compare the measurements with ambient and meteorological information, as well as urban typology settings. Our results indicate SPM deposition rates between 2.5 and 3.9 g/(m 2 ⋅30 days). Only one site exceeded the national limit of 4.5 g/(m 2 ⋅30 days), but we found an increasing trend in all three sites. SPM and its insoluble sedimentation rates increased during warm and dry months and presented significant correlations with meteorological parameters. The highest sedimentation rates were measured at the location with the least permeable surfaces and the lowest green spaces, while the lowest sedimentation rates were found in the sites with abundant green spaces and permeable soil. No significant differences were detected in the soluble components. Our results suggest that SPM levels in Santiago are close to the national limit and may increase with climate change and urban expansion.

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Geochemical features of aerosols in Santiago de Chile from time series analysis

Cited by 11 publications

References 42 publications

Geochemical Characterization and Heavy Metal Sources in PM10 in Arequipa, Peru

Geochemical Characterization and Heavy Metal Sources in PM10 in Arequipa, Peru

Rare earth elements in poplar leaves as indicators of geological environment and technogenesis

Sedimentation rate of settleable particulate matter in Santiago city, Chile

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