Single-particle characterization of indoor aerosol particles collected at an underground shopping area in Seoul, Korea

Abstract

In underground shopping areas, particulate matters can be a considerable health hazard to the workers, shoppers, passersby, and shop-keepers as they spend their considerable time in this closed microenvironment. However, no study on the characteristics of indoor aerosols in an underground shopping area has been reported to our knowledge. This work provides detailed information on characteristics of underground shopping area aerosols on a single particle level.

Ultrafine Particle Events in the Ambient Atmosphere in Korea

“…UFP number concentrations, gaseous pollutants, and meteorological data, averaged by the time of day, obtained in urban Gwangju , 2010, 2011, and 2012), coastal Taean (2008), and industrial Yeosu (2008 sites in Korea by continuously measuring particle number size distribution N (13-615 nm) are summarized in Table 1. The variation of UFP number concentrations in three different sampling sites: Gwangju, Taean, and Yeosu, and seasonal and long-term variations in urban Gwangju are described as follows.…”

“…Carbonaceous particles (i.e., obtained from the incomplete combustion of fossil fuels, biofuels, and biomass (Maskey et al, 2011)), are ubiquitous in the tropospheric atmosphere, and have a significant impact on atmospheric climate change because of their wellknown radiative forcing effects. Although different types of carbonaceous particles, such as elemental carbon, organic, and biogenic, are diverse in physical and chemical characteristics, the common characteristic of these types of particles is that the particle is enriched mostly by C peak in the EDS spectrum.…”

“…A particle with circular in shape of smooth surface, recognized as fly ash, is produced during high-temperature combustion processes and is mainly composed of Si, Al, Fe and/or Ca oxides (Maskey et al, 2011). The TEM image and X-ray spectral data of the particle observed in a 70 nm mobility-classified particle from the combustion event in industrial Yeosu (see Fig.…”

“…The average UFP number concentrations measured at three sampling sites were compared to the maximum UFP number concentrations in the UFP events, where a significant increase of the concentrations was observed in all the events. The average and maximum concentration of UFP number concentrations in the UFP events were 4.80×10 3 cm A total of 128 days samples were measured during different seasons in urban Gwangju (2007, 2010, 2011, and 2012), industrial Yeosu (2008, and coastal Taean (2008) sites. In this work, UFP events were identified and classified into different types by applying the approach as described above and analyzed the samples.…”

Ventilation and indoor air quality in retail stores: A critical review (RP-1596)

“…Cooking events can generate fine and ultrafine particles (e.g., Abt et al 2000;Wallace et al 2004). Other retail sites that sell new clothing can be a source for textile particles (Maskey et al 2011). Additionally, retail environments usually have high foot traffic areas that contribute to indoor particles through movement of people, transport of outdoor dust, and resuspension of previously deposited particles (e.g.…”