Ultrafine Particle References
نویسندگان
چکیده
A review of the physical characteristics of sulfur-containing aerosols, with respect to size distribution of the physical distribution, sulfur distributions, distribution modal characteristics, nuclei formation rates, aerosol growth characteristics, and in situ measurement, has been made. Physical size distributions can be characterized well by a trimodal model consisting of three additive log-normal distributions.
منابع مشابه
Long term aerosol measurements
Introduction Conclusions References Tables Figures Back Close Abstract Introduction Conclusions References Tables Figures Back Close Abstract Long-term measurements (over 4 years) of particle number size distributions (sub-micrometer particles, 3–800 nm in diameter), trace gases (NO, NO 2 , and O 3), and meteorological parameters (global radiation, wind speed and direction, atmospheric pressure...
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Ultrafine particles with a diameter below 1 μm are strongly linked to traffic and industrial emissions, causing a growing global health concern. In order to reveal the characteristics of ultrafine particles in central China, which makes up the sparse research in industrial cities of a developing country, particle number concentrations (PNC) together with meteorological parameters and concentrat...
متن کاملChallenges and Approaches for Developing Ultrafine Particle Emission Inventories for Motor Vehicle and Bus Fleets
Motor vehicles in urban areas are the main source of ultrafine particles (diameters < 0.1 μm). Ultrafine particles are generally measured in terms of particle number because they have little mass and are prolific in terms of their numbers. These sized particles are of particular interest because of their ability to enter deep into the human respiratory system and contribute to negative health e...
متن کاملUltrafine and respirable particles in an automotive grey iron foundry.
Ultrafine particle number and respirable particle mass concentrations were measured throughout an automotive grey iron foundry during winter, spring and summer using a particle concentration mapping procedure. Substantial temporal and spatial variability was observed in all seasons and attributed, in part, to the batch nature of operations, process emission variability and frequent work interru...
متن کاملConcentrations of ultrafine particles at a highway toll collection booth and exposure implications for toll collectors.
Research regarding the magnitude of ultrafine particle levels at highway toll stations is limited. This study measured ambient concentrations of ultrafine particles at a highway toll station from October 30 to November 1 and November 5 to November 6, 2008. A scanning mobility particle sizer was used to measure ultrafine particle concentrations at a ticket/cash tollbooth. Levels of hourly averag...
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