The influence of urban road traffic on nanoparticles: Roadside measurements

Belkacem, Ines; Khardi, Salah; Helali, Ali; Slimi, Khalifa; Serindat, Sophie

doi:10.1016/j.atmosenv.2020.117786

Cited by 16 publications

(10 citation statements)

References 48 publications

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“…Although the size distributions do not show clear division between the modes, we have assigned particles smaller than 50 nm to the nucleation mode and particles larger to the accumulation mode, consistent with what is often observed with traffic aerosols. Other studies have associated fresh traffic emissions with the nucleation mode [65][66][67]. The accumulation mode often follows the traffic, but it has lower concentrations than the nucleation mode [68,69].…”

Section: Particle Size Distributionmentioning

confidence: 99%

Measuring the effect of fireworks on air quality in Minneapolis, Minnesota

et al. 2022

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Air quality was measured before, during, and after a 4th of July fireworks display in downtown Minneapolis, Minnesota using a mix of low-cost sensors (CO, CO2, and NO) for gases and portable moderate cost instruments for particle measurements (PM2.5, lung deposited surface area, and number weighted particle size distributions). Meteorological conditions—temperature, humidity, and vertical temperature profile were also monitored. Concentrations of particles and most gaseous species peak between 10 pm and midnight on July 4th, decrease in the middle of the night but increase again and by between 6 and 7 am reach concentrations as high or higher than during fireworks. This overnight increase is likely due to a temperature inversion trapping emissions. Between 10 pm and midnight on July 4th the measures of particle concentration increase by 180–600% compared to the same period on July 3rd. Particle size distributions are strongly influenced by fireworks, shifting from traffic-like bimodal distributions before to a nearly unimodal distribution dominated by a large accumulation mode during and after. The shape of the size distribution measured during the early morning peak is nearly identical to that observed during fireworks, suggesting that the early morning peak is mainly due to trapped fireworks emissions not early morning traffic. Gaseous species are less strongly influenced by fireworks than particles. Comparing measurements made between 10 pm and midnight on July 4th and the same period on July 3rd, the concentration of CO increases 32% while the CO2 increases only 2% but increases by another 15% overnight. The NO concentration behaves oddly, decreasing during fireworks, but then recovering the next morning, more than doubling overnight. Our measurements of CO, NO, and PM2.5 are compared with those made at the nearest (~ 2 km away) Minnesota Pollution Control Agency Air Monitoring Station. Their NO results are quite different from ours with much lower concentrations before fireworks, a distinct peak during, followed by a strong overnight increase and an early morning peak somewhat similar in shape and concentration to ours. These differences are likely due mainly to malfunction of our low-cost NO sensor. Concentrations of CO and PM2.5 track ours within 25% but peak shapes are somewhat different, which is not unexpected given the spatial separation of the measurements. Article highlights Low-cost and moderate-cost sensors are used to monitor the impact of a 4th of July fireworks display on local air quality. Particle concentrations and size are more strongly influenced by fireworks than are concentrations gaseous pollutants. Particle size distributions produced by fireworks are distinctly different from those associated with urban traffic sources.

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Section: Particle Size Distributionmentioning

confidence: 99%

Measuring the effect of fireworks on air quality in Minneapolis, Minnesota

et al. 2022

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“…Al‐Temeemi (1995) and Zhang and Batterman (2013) stated that road transport emissions and increasing fuel consumption have a negative impact on air quality. The outdoor pollutant concentrations are influenced by the weather, site topography, and traffic conditions (Belkacem et al., 2020; Murena & Favale, 2007). The duration and severity of road traffic congestion influences pollutant emissions and air quality, with longer and higher traffic congestion reducing air quality, especially in areas close to main highways.…”

Section: Introductionmentioning

confidence: 99%

Air quality in Kuwait urban areas

Matar,

Al‐Otaibi,

Almutairi

et al. 2023

Environmental Quality Mgmt

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Air pollution is a serious issue that has an impact on human health all over the world. Improving air quality is a main part of environmental sustainability, and it begins with identifying contaminants and their sources. This paper examines air quality in urban areas and the background levels of pollutants in Kuwait by analyzing pollutant data from a number of fixed monitoring stations managed by the Environment Public Authority in the State of Kuwait. The concentrations of SO2, CO, O3, NO, and PM10 were measured at several sites in Kuwait. This study examines time series and wind rose plots for temporal and spatial variation, and pollutant sources. The results of this study show different variation patterns for SO2, which could be linked to traffic levels. There were similar daily profiles for CO, NO, and O3 at all the sites. Most of these pollutants exceeded the limits set by air quality standards.

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“…Deterioration of air quality in every city in the world has become a major concern as environmental and health impacts have become highly significant [1][2][3][4][5][6]: there are more than 430,000 premature deaths every year in Europe and 7 million around the world per year [7][8]. In addition, chronic diseases such as asthma, cancers, pulmonary illnesses and heart diseases are associated with deterioration of air quality.…”

Section: Introductionmentioning

confidence: 99%

“…It is essential to emphasize that road traffic is a major contributor to non-exhaust emissions which are highly dependent on weather conditions such as wind speed and direction, ambient temperature, relative humidity (RH) and precipitation [3,[24][25], distance from the road, topographical factors of the built environment in cities as well as road structures [3,[26][27][28]. Depending on the variability of these parameters, various phenomena have occurred such as: atmospheric resuspension of particles, mixing -dispersion, coagulation, evaporation, dilution and turbulence, resuspension [2,6,12,[29][30][31][32]34].…”

Section: Introductionmentioning

confidence: 99%

“…Effects of particle emissions by road traffic (exhaust and non-exhaust) on human health and environment have been regularly proven [1,3,[45][46][47][48]. The major observed impacts are related to cardiovascular system (strokes and ischemic heart diseases), lungs inflammations, asthma, chronic lungs diseases, cancers, pulmonary fibroses, … [12,[49][50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 99%

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2022

JEPC

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Non-exhaust road transport emissions, particularly tyre-pavement abrasion, contribute to poor air quality. This original work is on particle emissions caused by tyre-pavement abrasion in real driving conditions in urban, suburban and motorway areas. The collected data were analyzed according to the size, the number and chemical identification. Multivariate analysis provided clusters of size and chemical elements. Results showed the predominant particles (diameter φ < 1 µm and φ ε]1-2 µm]) for urban and suburban experiments, and ]1-3 µm] on motorways. A confirmed shift phenomenon at the close-to-the-source showed particles of large sizes [5-10 µm]. The obtained clusters were: 1. Aluminosilicate, iron compounds, silicate free of aluminum (70%). 2. Ferrosilicon, silica, compounds of calcium, manganese, iron oxide, compounds of aluminum, sulfur, copper and zinc (29%). 3. A mix of various traces (1%). This paper will contribute to the development of new green technologies dedicated to improving sustainable road transport.

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The influence of urban road traffic on nanoparticles: Roadside measurements

Cited by 16 publications

References 48 publications

Measuring the effect of fireworks on air quality in Minneapolis, Minnesota

Measuring the effect of fireworks on air quality in Minneapolis, Minnesota

Air quality in Kuwait urban areas

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