Hygroscopic Behavior of Aerosol Particles Emitted from Biomass Fired Grate Boilers

Rissler, Jenny; Pagels, Joakim; Swietlicki, Erik; Wierzbicka, Aneta; Strand, Michael; Lillieblad, Lena; Sanati, Mehri; Bohgard, Mats

doi:10.1080/02786820500331068

Cited by 54 publications

(48 citation statements)

References 32 publications

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“…The apparently near-constant value of the dry particle density is an indication that the observed particles were already collapsed, since variability in the ambient relative humidity would otherwise induce further variability in the mass closure. This was not surprising, since Rissler et al (2005) found that the particles started to collapse already below 50% RH.…”

Section: Particle Densitiesmentioning

confidence: 99%

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Size distribution and hygroscopic properties of aerosol particles from dry-season biomass burning in Amazonia

et al. 2006

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Abstract. Aerosol particle number size distributions and hygroscopic properties were measured at a pasture site in the southwestern Amazon region (Rondonia). The measurements were performed 11 September-14 November 2002 as part of LBA-SMOCC (Large scale Biosphere atmosphere experiment in Amazonia -SMOke aerosols, Clouds, rainfall and Climate), and cover the later part of the dry season (with heavy biomass burning), a transition period, and the onset of the wet period.Particle number size distributions were measured with a DMPS (Differential Mobility Particle Sizer, 3-850 nm) and an APS (Aerodynamic Particle Sizer), extending the distributions up to 3.3 µm in diameter. An H-TDMA (Hygroscopic Tandem Differential Mobility Analyzer) measured the hygroscopic diameter growth factors (Gf ) at 90% relative humidity (RH), for particles with dry diameters (d p ) between 20-440 nm, and at several occasions RH scans (30-90% RH) were performed for 165 nm particles. These data provide the most extensive characterization of Amazonian biomass burning aerosol, with respect to particle number size distributions and hygroscopic properties, presented until now. The evolution of the convective boundary layer over the course of the day causes a distinct diel variation in the aerosol physical properties, which was used to get information about the properties of the aerosol at higher altitudes.The number size distributions averaged over the three defined time periods showed three modes; a nucleation mode with geometrical median diameters (GMD) of ∼12 nm, an Aitken mode (GMD=61-92 nm) and an accumulation mode (GMD=128-190 nm). The two larger modes were shifted towards larger GMD with increasing influence from biomass burning.Correspondence to: J. Rissler (jenny.rissler@pixe.lth.se)The hygroscopic growth at 90% RH revealed a somewhat external mixture with two groups of particles; here denoted nearly hydrophobic (Gf ∼1.09 for 100 nm particles) and moderately hygroscopic (Gf ∼1.26). While the hygroscopic growth factors were surprisingly similar over the periods, the number fraction of particles belonging to each hygroscopic group varied more, with the dry period aerosol being more dominated by nearly hydrophobic particles. As a result the total particle water uptake rose going into the cleaner period. The fraction of moderately hygroscopic particles was consistently larger for particles in the accumulation mode compared to the Aitken mode for all periods. Scanning the H-TDMA over RH (30-90% RH) showed no deliquescence behavior. A parameterization of both Gf (RH) and Gf (d p ), is given.

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Section: Particle Densitiesmentioning

confidence: 99%

“…The agglomerates found in Rissler et al (2005) could be described as having a specific fractal dimension (∼2.5). Once they are cooled down and humidified in the atmosphere, these structures collapse by condensation of organic compounds and water, and become more compact and near-spherical Weingartner et al, 1997).…”

Section: Particle Densitiesmentioning

confidence: 99%

Size distribution and hygroscopic properties of aerosol particles from dry-season biomass burning in Amazonia

et al. 2006

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“…The reason for the higher value for Lycksele is mainly because there is a larger fraction of smaller particles than in the laboratory, and hence the alveolar deposition is higher. In addition, there is a difference in hygroscopic growth, which is dependent on combustion efficiency and may vary from hydrophobic to salt dominated hygroscopic particles (Rissler et al, 2005).…”

Section: Respiratory Tract Deposition For the Number Concentrationsmentioning

confidence: 99%

Size-Resolved Respiratory Tract Deposition of Sub-Micrometer Aerosol Particles in a Residential Area with Wintertime Wood Combustion

Kristensson

Rissler

Löndahl

et al. 2013

Aerosol Air Qual. Res.

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Particle size distributions and hygroscopic growth were studied in a town in Sweden with extensive emissions from wood combustion. The average deposited fraction of particle number, surface area and volume dose in the human respiratory tract was estimated using the data set, as well as the typical deposition pattern of the two dominant particle source types: wood combustion and traffic exhaust. As far as we know, this is the first report on the deposited fraction and hygroscopicity of ambient particles from domestic wood combustion in the literature. The use of PM 2.5 as a substitute for the deposited dose was also tested. Source/receptor modeling and the hygroscopicity measurements showed that wood combustion and traffic exhaust are dominant sources, and that these particles have a low water uptake. Number fractions of 38 and 69% of the wood combustion and traffic particles, respectively, were deposited in the respiratory tract, and 53% of the particles were deposited as an average for the whole period. The deposited fraction of the surface area and volume dose was also calculated for wood combustion particles, with the result being 22% for both parameters. The results also revealed that the PM 2.5 average over more than 10 hours correlated well (r 2 > 0.80) with the deposited surface area and volume dose. This means that PM 2.5 can be used as proxy for the deposited dose when examining health effect relationships during short-term exposure studies if the averaging time is sufficient, while a PM 2.5 proxy is not recommended for shorter averaging times.

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“…the minimum S required for the particles of a certain size to activate into cloud drops (e.g. Svenningsson et al, 1992;Rissler et al, 2005;Khvorostyanov and Curry, 2007;Wex et al, 2007). One such approach is the hygroscopicity parameter κ, also known as "kappa", a unitless number describing the cloud condensation nucleus activity (Petters and Kreidenweis, 2007).…”

Section: Introductionmentioning

confidence: 99%

A synthesis of cloud condensation nuclei counter (CCNC) measurements within the EUCAARI network

et al. 2015

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Published by Copernicus Publications on behalf of the European Geosciences Union. M. Paramonov et al.: A synthesis of CCNC measurements within the EUCAARI networkAbstract. Cloud condensation nuclei counter (CCNC) measurements performed at 14 locations around the world within the European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) framework have been analysed and discussed with respect to the cloud condensation nuclei (CCN) activation and hygroscopic properties of the atmospheric aerosol. The annual mean ratio of activated cloud condensation nuclei (N CCN ) to the total number concentration of particles (N CN ), known as the activated fraction A, shows a similar functional dependence on supersaturation S at many locations -exceptions to this being certain marine locations, a free troposphere site and background sites in south-west Germany and northern Finland. The use of total number concentration of particles above 50 and 100 nm diameter when calculating the activated fractions (A 50 and A 100 , respectively) renders a much more stable dependence of A on S; A 50 and A 100 also reveal the effect of the size distribution on CCN activation. With respect to chemical composition, it was found that the hygroscopicity of aerosol particles as a function of size differs among locations. The hygroscopicity parameter κ decreased with an increasing size at a continental site in south-west Germany and fluctuated without any particular size dependence across the observed size range in the remote tropical North Atlantic and rural central Hungary. At all other locations κ increased with size. In fact, in Hyytiälä, Vavihill, Jungfraujoch and Pallas the difference in hygroscopicity between Aitken and accumulation mode aerosol was statistically significant at the 5 % significance level. In a boreal environment the assumption of a size-independent κ can lead to a potentially substantial overestimation of N CCN at S levels above 0.6 %. The same is true for other locations where κ was found to increase with size. While detailed information about aerosol hygroscopicity can significantly improve the prediction of N CCN , total aerosol number concentration and aerosol size distribution remain more important parameters. The seasonal and diurnal patterns of CCN activation and hygroscopic properties vary among three long-term locations, highlighting the spatial and temporal variability of potential aerosol-cloud interactions in various environments.

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Hygroscopic Behavior of Aerosol Particles Emitted from Biomass Fired Grate Boilers

Cited by 54 publications

References 32 publications

Size distribution and hygroscopic properties of aerosol particles from dry-season biomass burning in Amazonia

Size distribution and hygroscopic properties of aerosol particles from dry-season biomass burning in Amazonia

Size-Resolved Respiratory Tract Deposition of Sub-Micrometer Aerosol Particles in a Residential Area with Wintertime Wood Combustion

A synthesis of cloud condensation nuclei counter (CCNC) measurements within the EUCAARI network

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