Size distributions of fine and ultrafine particles in the city of Strasbourg: Correlation between number of particles and concentrations of NOx and SO2 gases and some soluble ions concentration determination

Roth, E.; Kehrli, Damaris; Bonnot, Karine; Trouvé, Gwenaëlle

doi:10.1016/j.jenvman.2006.12.022

Cited by 16 publications

(5 citation statements)

References 36 publications

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“…This clear seasonal variation of particle number concentrations, with high values in winter and low values in summer, has been reported in other cities, e.g., Helsinki, Finland (8-400 nm) [18], Stockholm, Sweden (TSI Model 3022 CPC) [8], Augsburg, Germany (TSI Model 3022 CPC) [8], Rome and Barcelona, Italy and Spain (TSI Model 3022 CPC) [8] and in New Delhi, India [19]. The summer total particle number concentration in the SMPS size range in the present study is close to the spring value (39,000 AE 35,000 cm À3 for particles with diameters of 7-10,000 nm) reported by Roth et al [20] who measured aerosols in the centre of Strasbourg, France, where there is a prevalence of high-density motor vehicle traffic daily. Most cities mentioned above are located in the Northern hemisphere, experiencing distinguished seasonal differences in terms of meteorological parameters, such as lower mixing layer height, greater atmospheric stability and lower temperature (increased nucleation events of combustion exhaust emitted from motor vehicles) in winter compared to summer.…”

Section: Particle Number Concentrationssupporting

confidence: 84%

Particle Counts and Size Distributions in the Roadside Environment

Cheng

Huang

et al. 2012

Indoor and Built Environment

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Continuous measurements of number concentrations and size distributions of particles with diameters of 7-225 nm and 100-2,000 nm were conducted, using a TSI scanning mobility particle sizer (SMPS) and an optical particle counter (OPC), respectively, in eight weekdays of 2005 at a roadside environment in Hong Kong. PM 2.5 and PM 10 mass concentrations, black carbon (BC), particle-bound polycyclic aromatic hydrocarbons (p-PAHs), traffic counts and meteorological parameters were simultaneously monitored every hour. On average, the total particle number concentrations were 50,235 AE 27,076 cm À3 in the SMPS size range and 5,771 AE 1,793 cm À3 in the OPC size range in the winter sampling days, exceeding the summer particle number concentrations by a factor of 1.5 and 2.5, respectively. The ultrafine mode particles accounted for $90% of the particles in the SMPS size range. Daily cycle of particle numbers in the SMPS size range were obvious, with high values during daytime and low values during nigh time, which is consistent with the traffic pattern, especially the diesel-fuelled vehicles (r ¼ 0.72). Moreover, these particles were found to have good correlations with BC (r ¼ 0.84) and p-PAHs (r ¼ 0.90). The findings have suggested that diesel-fuelled vehicle exhausts are the dominant source for ultrafine particles at roadside environments of Hong Kong.

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Section: Particle Number Concentrationssupporting

confidence: 84%

Particle Counts and Size Distributions in the Roadside Environment

Cheng

Huang

et al. 2012

Indoor and Built Environment

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“…For combustion ignition temperatures between 300 and 360 °C, the number size distributions showed a distinct bimodal behavior with nucleation and accumulation modes. ,− The nucleation mode distribution tapered off at approximately 40 nm, and its peak decreased with time as smaller particles diffuse more rapidly than larger particles, which scavenge smaller ones more efficiently. The accumulation mode consisted of particles ranging between 50 and 500 nm in d m .…”

Section: Resultsmentioning

confidence: 98%

Density and Homogeneous Internal Composition of Primary Brown Carbon Aerosol

Sumlin

Oxford

Seo

et al. 2018

Environ. Sci. Technol.

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The presence of atmospheric brown carbon (BrC) has been the focus of many recent studies. These particles, predominantly emitted from smoldering biomass burning, absorb light in the near-ultraviolet and short visible wavelengths and offset the radiative cooling effects associated with organic aerosols. Particle density dictates their transport properties and is an important parameter in climate models and aerosol instrumentation algorithms, but our knowledge of this particle property is limited, especially as functions of combustion temperature and fuel type. We measured the effective density (ρ) and optical properties of primary BrC aerosol emitted from smoldering combustion of Boreal peatlands. Energy transfer into the fuel was controlled by selectively altering the combustion ignition temperature, and we find that the particle ρ ranged from 0.85 to 1.19 g cm corresponding to ignition temperatures from 180 to 360 °C. BrC particles exhibited spherical morphology and a constant 3.0 mass-mobility exponent, indicating no internal microstructure or void spaces. Upon partial thermal volatilization, ρ of the remaining particle mass was confined to a narrow range between 0.9 and 1.1 g cm. These findings lead us to conclude that primary BrC aerosols from biomass burning have homogeneous internal composition, and their ρ is in fact their actual density.

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“…A multistage electrometer enables counting the charged aerosol particles. The current is simultaneously measured for the 14 impactor stages and directly converted by the electrometer in particles number and concentrations using mathematical algorithms [15].…”

Section: Sampling and Methodsmentioning

confidence: 99%

Heavy Metals in Air Nanoparticles in Affected Industry Area

Sýkorová¹,

Kucbel²,

Raclavská³

et al. 2017

J. sustain. dev. energy water environ. syst.

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The Moravian-Silesian Region is one of the most polluted sites by dust particles in the Czech Republic. Therefore, atmospheric concentrations of heavy metals as cadmium, cobalt, chromium, copper, nickel, lead, antimony, thallium, manganese, iron and zinc, were monitored at 10 localities in the region during summer of 2014. Heavy metals were monitored in 10 particle size classes from 18.3 nm to 9.93 µm. The percentage of the amount of heavy metals in the sum PM at all localities ranged from 0.2-2.5%. It was found that chromium, manganese, iron and zinc were mostly accumulated in dust particles with diameter greater than 1.6 µm. Lead, cadmium and antimony occur mainly in the class below 0.949 µm. These metals are more dangerous for human health, and can have potential carcinogenic effect. The influence of metallurgical industry evaluated on the basis of heavy metals in the individual particle size classes in the air within the Moravian-Silesian Region has not been unequivocally demonstrated.

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Size distributions of fine and ultrafine particles in the city of Strasbourg: Correlation between number of particles and concentrations of NOx and SO2 gases and some soluble ions concentration determination

Cited by 16 publications

References 36 publications

Particle Counts and Size Distributions in the Roadside Environment

Particle Counts and Size Distributions in the Roadside Environment

Density and Homogeneous Internal Composition of Primary Brown Carbon Aerosol

Heavy Metals in Air Nanoparticles in Affected Industry Area

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