Aerosol size distributions measured in urban, rural and high-alpine air with an electrical low pressure impactor (ELPI)

Held, Andreas; Zerrath, Axel; McKeon, U.; Fehrenbach, T.; Plaß-Dülmer, C.; Kaminski, U.; Berresheim, H.; Pöschl, Ulrich

doi:10.1016/j.atmosenv.2008.06.015

Cited by 35 publications

(23 citation statements)

References 29 publications

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“…The results were compared in scatterplots, including regression analysis. As recommended by Held et al [31], the correlation between measurements were evaluated using Spearman’s correlation coefficient.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Three Real-Time Measurement Methods for Airborne Ultrafine Particles in the Silicon Alloy Industry

Kero

Jørgensen

2016

IJERPH

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The aim of this study was to compare the applicability and the correlation between three commercially available instruments capable of detection, quantification, and characterization of ultrafine airborne particulate matter in the industrial setting of a tapping area in a silicon alloy production plant. The number concentration of ultrafine particles was evaluated using an Electric Low Pressure Impactor (ELPITM), a Fast Mobility Particle Sizer (FMPSTM), and a Condensation Particle Counter (CPC). The results are discussed in terms of particle size distribution and temporal variations linked to process operations. The instruments show excellent temporal covariation and the correlation between the FMPS and ELPI is good. The advantage of the FMPS is the excellent time- and size resolution of the results. The main advantage of the ELPI is the possibility to collect size-fractionated samples of the dust for subsequent analysis by, for example, electron microscopy. The CPC does not provide information about the particle size distribution and its correlation to the other two instruments is somewhat poor. Nonetheless, the CPC gives basic, real-time information about the ultrafine particle concentration and can therefore be used for source identification.

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Section: Discussionmentioning

confidence: 99%

Comparison of Three Real-Time Measurement Methods for Airborne Ultrafine Particles in the Silicon Alloy Industry

Kero

Jørgensen

2016

IJERPH

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“…Particle size and size distribution are important aspects of aerosol physical properties, and particle number concentration should get more attention than mass concentration. Over the past decade, much research has been done on urban aerosol number size distributions, including long-and short-term measurements (Junker et al, 2000;Wählin et al, 2001;Wehner et al, 2002;Wehner and Wiedensohler, 2003;Held et al, 2008;Weber, 2009;Lonati et al, 2011). Most of researches on aerosol size spectra were done in the developed countries, less studies were carried out in the newly industrialized countries (Dunn et al, 2004;Mönkkönen et al, 2005;Wehner et al, 2008;Wu et al, 2008;Zhang et al, 2001Zhang et al, , 2008.…”

Section: Introductionmentioning

confidence: 99%

Aerosol Size Spectra and Particle Formation Events at Urban Shanghai in Eastern China

Cheng

Zhang

et al. 2012

Aerosol Air Qual. Res.

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Aerosol number size distributions between 10 nm and 10 µm were measured from October 2008 to February 2009 in Shanghai, China. The average particle number, surface and volume concentrations were 1.3 × 10 4 1/cm 3 , 6.4 × 10 2 µm 2 /cm 3 and 64 µm 3 /cm 3 , respectively. Aitken particles dominated the total number of particles, and accumulated particles were the greatest contributor to particle surface area. Particle number size distributions could be characterized by multi-lognormal functions. The average number size distributions of aerosols revealed a clear diurnal pattern of two peaks within 30-60 nm corresponding to the morning and afternoon traffic rush hours. All size particles had two peaks in mean number concentrations during the rush hours, and 10-20 nm and 20-50 nm particles had one additional peak in late morning. The new particle formation events were found on four days out of 73. The apparent formation rates varied from 0.2 to 0.5 cm 3 /s, and the growth rates of newly formed particles were 3.3-5.5 nm/h. Overall, the new particle formation events had a significant impact on particle size spectra in the nucleation and Atiken modes, but insignificant effects on particle surface and volume concentrations.

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“…Espinosa et al (2001) and Allen et al (2001) studied size distribution of metals in urban aerosols (Fang et al, 2006;Sabbagh-Kupelwieser et al, 2010). Recently, several investigations have been made on the measurements of size distribution of aerosols and associated elemental concentrations in urban areas (Salma et al, 2002(Salma et al, , 2005Karanasiou et al, 2007;Held et al, 2008;Wagner et al, 2008). Size distribution and anthropogenic apportionment of airborne trace metals were carried out in Kanazawa, Japan by Wang et al (2006).…”

Section: Introductionmentioning

confidence: 99%

Size Distribution of Airborne Particulate Matter and Associated Metallic Elements in an Urban Area of an Industrial City in Korea

Lee

2011

Aerosol Air Qual. Res.

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This study analyzed the size distribution of airborne particulate matter (PM) and 13 metallic elements associated with it. PM samples were collected using an eight-stage cascade impactor in a busy urban area of an industrial city, Korea during four seasons. Most of the fine and coarse particle mass was concentrated in the size range of 0.7-1.1 µm and 9-10 µm, respectively. PM mass showed two peaks in spring: The first peak was observed for the smallest particles (< 0.7 µm) and the second one was found in the coarse particles (2.1-10 µm). However, fine particles (0.7-2.1 µm) showed the highest PM concentrations in winter.In the distribution analysis of 13 metals in PM, three main groups were determined: (i) heavy metals (Cd, Zn, Mn, Ni and Cr) which were present in high concentrations in fine particles (< 2.1 µm) particularly at the size of 0.4-0.7 µm, (ii) light metals (Na, Ca, K, Al) and Fe which had high concentrations in coarse particles, and (iii) other heavy metals (Pb, Mg and Cu) showing high concentrations at sizes larger than 5.8 µm. The concentrations of Cd, Mn and Ni in the size range of 0.4-0.7 µm of the airborne particles and their total levels obtained by summing up the concentrations of the 8 classified size groups were exceeded the proposed thresholds or tolerance levels of the toxic heavy metals. The mass concentrations of Cd, Mn and Ni decreased with increasing particle size, except the size range of 9-10 µm, in PM 10 . The levels of Pb in PM 10 did not show the size characteristics shown in Cd, Mn and Ni and also was below its tolerance level. Principal sources of 13 metallic elements in PM included natural sources and local anthropogenic sources such as non-ferrous metal smelting, oil combustion, welding, vehicular traffic and road dust.

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Aerosol size distributions measured in urban, rural and high-alpine air with an electrical low pressure impactor (ELPI)

Cited by 35 publications

References 29 publications

Comparison of Three Real-Time Measurement Methods for Airborne Ultrafine Particles in the Silicon Alloy Industry

Comparison of Three Real-Time Measurement Methods for Airborne Ultrafine Particles in the Silicon Alloy Industry

Aerosol Size Spectra and Particle Formation Events at Urban Shanghai in Eastern China

Size Distribution of Airborne Particulate Matter and Associated Metallic Elements in an Urban Area of an Industrial City in Korea

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