Aerosol dry deposition in the urban environment: Assessment of deposition velocity on building facades

Maro, D.; Connan, O.; Flori, Jean-Paul; Hébert, D.; Mestayer, P.G.; Olivé, Francesc Domingo; Rosant, J.-M.; Rozet, M.; Sini, J.-F.; Solier, L.

doi:10.1016/j.jaerosci.2013.12.001

Cited by 22 publications

(14 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But in other surrogate surfaces recovery efficiency is usually between 60 and 80 %. Maro et al (2014) collected aerosol dry deposition on building facades. Deposition of particles on building facades is a relatively slow process.…”

Section: Discussion On Various Methods Of Flux Measurementmentioning

confidence: 99%

“…In this type of studies, long-term sampling could not provide representative data as particles may be washed out by rain. It is well known that dry deposition on surfaces results from a combination of several processes such as gravitational settling, Brownian diffusion, impaction, interception, thermophoresis, diffusiophoresis and electrostatic attraction (Maro et al 2014). Gravitational settling is expected to play no role in dry deposition on vertical surfaces.…”

Section: Discussion On Various Methods Of Flux Measurementmentioning

confidence: 99%

“…Furthermore, the level of actual surface finish is an important factor to capture/ retain particles. As far as Maro et al (2014) is concerned, particles with size 0.2-4 lm could be collected on vertical surfaces (values are restricted to their sampling conditions): But on horizontal surfaces, any range of particle size could be collected. To evaluate human exposure and associated health implications, horizontal surface sampling may be used since this type of sampling accounts for the entire size range of particles.…”

Section: Discussion On Various Methods Of Flux Measurementmentioning

confidence: 99%

See 2 more Smart Citations

An overview of particulate dry deposition: measuring methods, deposition velocity and controlling factors

Mohan

2015

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Much importance was given to dry deposition over the past few decades as it deteriorated the environmental conditions and resulted in subsequent health effects. This paper starts with an overall scenario of dry deposition research; it focuses on: various particulate dry deposition flux measurement methods, comparison of various published numerical values on dry deposition velocity and factors controlling dry deposition velocity. This work provides a technical overview to research studies on the current state of dry deposition and limitations of various measurement methods. Relationship between dry deposition flux and particle concentration is discussed with the help of previous works. Various mathematical models used to predict dry deposition velocity are discussed. Dry deposition velocity of particulates around the world is compared to gain perspective on factors influencing dry deposition.

show abstract

Section: Discussion On Various Methods Of Flux Measurementmentioning

confidence: 99%

Section: Discussion On Various Methods Of Flux Measurementmentioning

confidence: 99%

Section: Discussion On Various Methods Of Flux Measurementmentioning

confidence: 99%

See 1 more Smart Citation

An overview of particulate dry deposition: measuring methods, deposition velocity and controlling factors

Mohan

2015

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Torre Sarca has been active as an atmospheric monitoring station since 2005, and its long-time series of PM 2.5 samples collection has resulted particularly useful to estimate the TOW and Ncy over the last decade. The deposition of PM on monuments and building facades is an extremely troubled issue, in which several mechanisms may contribute (Brownian diffusion, impaction and interception due to the turbulent motions, gravitational sedimentation, thermophoresis, diffusiophoresis, electrostatic attraction) (Maro et al, 2014). PM 2.5 was chosen as it represents an important fraction in the deposition mechanism occurring on vertical surfaces (Nava et al, 2010).…”

Section: Sampling Activitymentioning

confidence: 99%

“…PM 2.5 was chosen as it represents an important fraction in the deposition mechanism occurring on vertical surfaces (Nava et al, 2010). Concerning dry deposition on vertical surfaces, the sedimentation is expected to be negligible, since it occurs mainly for the coarse fraction (i.e., PM 2.5-10 ), and the turbulent diffusion is assumed as the main mechanism (Maro et al, 2014). Moreover, fine particles have a longer residence time in the atmosphere.…”

Section: Sampling Activitymentioning

confidence: 99%

Experimental Measurements of Particulate Matter Deliquescence and Crystallization Relative Humidity: Application in Heritage Climatology

Casati

Rovelli

Perrone

et al. 2015

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

Climate and pollution can lead to materials weathering. In this study, an innovative method is employed to evaluate the hazard for heritage stone substrates induced by the synergic effect of particulate matter (PM) and climate. In this respect, two hazard indicators for stone materials were determined: the time of wetness and the number of dissolution and crystallization cycles. The two indicators were computed by coupling experimental measurements of the PM deliquescence and crystallization relative humidity with climatic data. For the first time, these indicators were estimated based on the PM hygroscopic properties, considering its whole hysteresis loop and its consequent hydration level.The proposed method was applied to PM samples collected in the polluted Po Valley (Milan): the experimental measurements of both PM deliquescence and crystallization relative humidity were performed in an environmental-controlled chamber using an electrical conductivity method. The time of wetness and the number of dissolution and crystallization cycles were then calculated by coupling the PM deliquescence and crystallization relative humidity with climatic data of Milan over the last decade (2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013). Results point out that, depending on the seasons, different hazards were identified. In winter, high time of wetness (89 ± 11%) and low number of cycles (3 ± 3 cycles/month) were found. Conversely, summer was characterized by low time of wetness (20 ± 13%) and high number of cycles (11 ± 5 cycles/month). Interestingly, spring and fall resulted the most dangerous seasons for outdoor-exposed stones, since they presented both high time of wetness and number of cycles. Since the two indicators are calculated considering PM properties and climatic data, their values are site-specific, while the method used for their determination is of general application and it can be used for an efficient hazard assessment in a heritage climatology perspective.

show abstract

Air Quality Improvement Using Phytodiversity and Plant Architecture

Magana-Arachchi

Wanigatunge

2021

Handbook of Ecological and Ecosystem Engineering

View full text Add to dashboard Cite

Aerosol dry deposition in the urban environment: Assessment of deposition velocity on building facades

Cited by 22 publications

References 22 publications

An overview of particulate dry deposition: measuring methods, deposition velocity and controlling factors

An overview of particulate dry deposition: measuring methods, deposition velocity and controlling factors

Experimental Measurements of Particulate Matter Deliquescence and Crystallization Relative Humidity: Application in Heritage Climatology

Air Quality Improvement Using Phytodiversity and Plant Architecture

Contact Info

Product

Resources

About