Vertical Variation of PM2.5 Mass and Chemical Composition, Particle Size Distribution, NO2, and BTEX at a High Rise Building

Research output: Contribution to journalArticlepeer-review

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Vertical Variation of PM2.5 Mass and Chemical Composition, Particle Size Distribution, NO2, and BTEX at a High Rise Building. / Zauli Sajani, Stefano; Marchesi, Stefano; Trentini, Arianna; Bacco, Dimitri; Zigola, Claudia; Rovelli, Sabrina; Ricciardelli, Isabella; Maccone, Claudio; Lauriola, Paolo; Cavallo, Domenico Maria; Poluzzi, Vanes; Cattaneo, Andrea; Harrison, Roy.

In: Environmental Pollution, Vol. 235, 04.2018, p. 339-349.

Research output: Contribution to journalArticlepeer-review

Harvard

Zauli Sajani, S, Marchesi, S, Trentini, A, Bacco, D, Zigola, C, Rovelli, S, Ricciardelli, I, Maccone, C, Lauriola, P, Cavallo, DM, Poluzzi, V, Cattaneo, A & Harrison, R 2018, 'Vertical Variation of PM2.5 Mass and Chemical Composition, Particle Size Distribution, NO2, and BTEX at a High Rise Building', Environmental Pollution, vol. 235, pp. 339-349. https://doi.org/10.1016/j.envpol.2017.12.090

APA

Zauli Sajani, S., Marchesi, S., Trentini, A., Bacco, D., Zigola, C., Rovelli, S., Ricciardelli, I., Maccone, C., Lauriola, P., Cavallo, D. M., Poluzzi, V., Cattaneo, A., & Harrison, R. (2018). Vertical Variation of PM2.5 Mass and Chemical Composition, Particle Size Distribution, NO2, and BTEX at a High Rise Building. Environmental Pollution, 235, 339-349. https://doi.org/10.1016/j.envpol.2017.12.090

Vancouver

Author

Zauli Sajani, Stefano ; Marchesi, Stefano ; Trentini, Arianna ; Bacco, Dimitri ; Zigola, Claudia ; Rovelli, Sabrina ; Ricciardelli, Isabella ; Maccone, Claudio ; Lauriola, Paolo ; Cavallo, Domenico Maria ; Poluzzi, Vanes ; Cattaneo, Andrea ; Harrison, Roy. / Vertical Variation of PM2.5 Mass and Chemical Composition, Particle Size Distribution, NO2, and BTEX at a High Rise Building. In: Environmental Pollution. 2018 ; Vol. 235. pp. 339-349.

Bibtex

@article{bf0fcb8d502e43489dc670cb7cf4b96b,
title = "Vertical Variation of PM2.5 Mass and Chemical Composition, Particle Size Distribution, NO2, and BTEX at a High Rise Building",
abstract = "Substantial efforts have been made in recent years to investigate the horizontal variability of air pollutants at regional and urban scales and epidemiological studies have taken advantage of resulting improvements in exposure assessment. On the contrary, only a few studies have investigated the vertical variability and their results are not consistent. In this study, a field experiment has been conducted to evaluate the variation of concentrations of different particle metrics and gaseous pollutants on the basis of floor height at a high rise building. Two 15-day monitoring campaigns were conducted in the urban area of Bologna, Northern Italy, one of the most polluted areas in Europe. Measurements sites were operated simultaneously at 2, 15, 26, 44 and 65 m a.g.l. Several particulate matter metrics including PM2.5 mass and chemical composition, particle number concentration and size distribution were measured. Time integrated measurement of NO2 and BTEX were also included in the monitoring campaigns. Measurements showed relevant vertical gradients for most traffic related pollutants. A monotonic gradient of PM2.5 was found with ground-to-top differences of 4% during the warm period and 11% during the cold period. Larger gradients were found for UFP (~30% during both seasons) with a substantial loss of particles from ground to top in the sub-50 nm size range. The largest drops in concentrations for chemical components were found for Elemental Carbon (-27%), iron (-11%) and tin (-36%) during winter. The ground-to-top decline of concentrations for NO2 and benzene during winter was equal to 74% and 35%, respectively. In conclusion, our findings emphasize the need to include vertical variations of urban air pollutants when evaluating population exposure and associated health effects, especially in relation to some traffic related pollutants and particle metrics.",
keywords = "PM2.5, Size distribution, Chemical composition, Exposure, Vertical variability",
author = "{Zauli Sajani}, Stefano and Stefano Marchesi and Arianna Trentini and Dimitri Bacco and Claudia Zigola and Sabrina Rovelli and Isabella Ricciardelli and Claudio Maccone and Paolo Lauriola and Cavallo, {Domenico Maria} and Vanes Poluzzi and Andrea Cattaneo and Roy Harrison",
year = "2018",
month = apr,
doi = "10.1016/j.envpol.2017.12.090",
language = "English",
volume = "235",
pages = "339--349",
journal = "Environmental Pollution",
issn = "0269-7491",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Vertical Variation of PM2.5 Mass and Chemical Composition, Particle Size Distribution, NO2, and BTEX at a High Rise Building

AU - Zauli Sajani, Stefano

AU - Marchesi, Stefano

AU - Trentini, Arianna

AU - Bacco, Dimitri

AU - Zigola, Claudia

AU - Rovelli, Sabrina

AU - Ricciardelli, Isabella

AU - Maccone, Claudio

AU - Lauriola, Paolo

AU - Cavallo, Domenico Maria

AU - Poluzzi, Vanes

AU - Cattaneo, Andrea

AU - Harrison, Roy

PY - 2018/4

Y1 - 2018/4

N2 - Substantial efforts have been made in recent years to investigate the horizontal variability of air pollutants at regional and urban scales and epidemiological studies have taken advantage of resulting improvements in exposure assessment. On the contrary, only a few studies have investigated the vertical variability and their results are not consistent. In this study, a field experiment has been conducted to evaluate the variation of concentrations of different particle metrics and gaseous pollutants on the basis of floor height at a high rise building. Two 15-day monitoring campaigns were conducted in the urban area of Bologna, Northern Italy, one of the most polluted areas in Europe. Measurements sites were operated simultaneously at 2, 15, 26, 44 and 65 m a.g.l. Several particulate matter metrics including PM2.5 mass and chemical composition, particle number concentration and size distribution were measured. Time integrated measurement of NO2 and BTEX were also included in the monitoring campaigns. Measurements showed relevant vertical gradients for most traffic related pollutants. A monotonic gradient of PM2.5 was found with ground-to-top differences of 4% during the warm period and 11% during the cold period. Larger gradients were found for UFP (~30% during both seasons) with a substantial loss of particles from ground to top in the sub-50 nm size range. The largest drops in concentrations for chemical components were found for Elemental Carbon (-27%), iron (-11%) and tin (-36%) during winter. The ground-to-top decline of concentrations for NO2 and benzene during winter was equal to 74% and 35%, respectively. In conclusion, our findings emphasize the need to include vertical variations of urban air pollutants when evaluating population exposure and associated health effects, especially in relation to some traffic related pollutants and particle metrics.

AB - Substantial efforts have been made in recent years to investigate the horizontal variability of air pollutants at regional and urban scales and epidemiological studies have taken advantage of resulting improvements in exposure assessment. On the contrary, only a few studies have investigated the vertical variability and their results are not consistent. In this study, a field experiment has been conducted to evaluate the variation of concentrations of different particle metrics and gaseous pollutants on the basis of floor height at a high rise building. Two 15-day monitoring campaigns were conducted in the urban area of Bologna, Northern Italy, one of the most polluted areas in Europe. Measurements sites were operated simultaneously at 2, 15, 26, 44 and 65 m a.g.l. Several particulate matter metrics including PM2.5 mass and chemical composition, particle number concentration and size distribution were measured. Time integrated measurement of NO2 and BTEX were also included in the monitoring campaigns. Measurements showed relevant vertical gradients for most traffic related pollutants. A monotonic gradient of PM2.5 was found with ground-to-top differences of 4% during the warm period and 11% during the cold period. Larger gradients were found for UFP (~30% during both seasons) with a substantial loss of particles from ground to top in the sub-50 nm size range. The largest drops in concentrations for chemical components were found for Elemental Carbon (-27%), iron (-11%) and tin (-36%) during winter. The ground-to-top decline of concentrations for NO2 and benzene during winter was equal to 74% and 35%, respectively. In conclusion, our findings emphasize the need to include vertical variations of urban air pollutants when evaluating population exposure and associated health effects, especially in relation to some traffic related pollutants and particle metrics.

KW - PM2.5

KW - Size distribution

KW - Chemical composition

KW - Exposure

KW - Vertical variability

U2 - 10.1016/j.envpol.2017.12.090

DO - 10.1016/j.envpol.2017.12.090

M3 - Article

VL - 235

SP - 339

EP - 349

JO - Environmental Pollution

JF - Environmental Pollution

SN - 0269-7491

ER -