Size distribution of water-soluble components in particulate matter emitted from biomass burning
Introduction
Biomass burning is as an important source of atmospheric particulate matter (PM) emissions around the world (Andreae and Merlet, 2001; Streets et al., 2003; Bond et al., 2004; Bo et al., 2008). Variation of burning material, terrain, burning type, combustion efficiency, and weather results in different chemical compositions and size distributions of particles emitted from biomass burning (Allen and Miguel, 1995; Turn et al., 1997; McDonald et al., 2000; Artaxo et al., 2002; Rissler et al., 2006; Fuzzi et al., 2007; Frey et al., 2009; Kim Oanh et al., 2011). Ambient concentrations of primary aerosol emissions from combustion sources are more elevated near sources than is usually the case for long range transported air. Aged aerosols tend to contain larger particles (>0.3 μm) than fresh primary aerosols from local combustion sources (Ondov and Wexler, 1998). Hence particle size distribution data could provide important information on source proximity. Their unique compositions and particle size provide the basis for receptor modeling and, thus, for tracing their transport in the atmosphere. Therefore, it is important to determine both the chemical composition and size distribution of the source to estimate the quantitative contribution of the emission source to a receptor site.
Size distribution measurements of PM emissions from biomass burning have typically been conducted in ambient air environments (Huang et al., 2006; Yang et al., 2006; Lee et al., 2008; Timonen et al., 2008; Saarnio et al., 2010). Mass size distribution of primary particle emissions from high temperature combustion sources was narrow with maximum in the accumulation mode size range with geometric mean diameters between 0.1 and 0.3 μm (Ondov and Wexler, 1998). Other studies have shown a unimodal size distribution of PM from biomass burning with a peak at 0.3–0.6 μm (Hays et al., 2005; Timonen et al., 2008; Saarnio et al., 2010). The size distribution of water-soluble organic carbon (WSOC) and inorganic ions in fresh smoke plumes from boreal wild fires in Europe indicated that the dominant mode for WSOC was typically in the size range of 0.1–1.0 μm (Saarnio et al., 2010). Normalized size distribution of long-ranged transported WSOC from wild fires also peaked in the range of 0.32–0.56 μm (Timonen et al., 2008). Kim Oanh et al. (2011) indicated that the largest fractions of PM, OC and elemental carbon emitted during the in-situ rice straw field burning experiments were associated with particle sizes of 0.4–1.1 μm. The size distributions of mass and chemical species in PM emissions from biomass burning in laboratory chamber environments can be used to understand changes in behavior and physicochemical characteristics of the smoke particles during transport. The consistency of the relative composition of size-resolved biomass smoke is important for source apportionments of ultrafine particles, PM0.2, PM0.5, etc. (Kleeman et al., 2008). To the best of our knowledge, size-resolved measurements of PM from biomass burning emissions in laboratory environments are extremely limited (Hays et al., 2005; Sippula et al., 2007; Kleeman et al., 2008; Frey et al., 2009), and it is not completely understood how mass size distributions of PM and its chemical species, such as WSOC, oxalate, Cl−, , and K+, vary with burned biomass materials. In addition, there is very little data in the literature addressing the variability of PM composition for biomass type and particle size.
In this study, size-resolved measurements of PM emissions from 10 biomass materials were made using a 10-stage MOUDI to determine mass, water-soluble organic and inorganic components. PM chemical abundance and size distribution results are presented and compared with those obtained from previous studies. The variability of the relative biomass smoke composition linked with biomass type and particle size are addressed.
Section snippets
Sampling of particulate matter emissions from biomass burning
In this study a total of 12 biomass materials were combusted to examine characteristics of particle emissions and size distributions of chemical components. The materials burned included four agricultural crop residues (rice straw, soybean stem, green perilla stem, and red pepper stem) and eight forest tree types (pine needles, pine stem, cherry leaves, cherry stem, maple leaves, maple stem, gingko stem, and gingko leaves). In Korea, crop residues are typically open burned in agricultural
Characteristic of water-soluble organic carbon in PM1.8
Only 10 of the 12 biomass combustion experiments are discussed due to measurement and/or analytical errors. Rice straw, soybean stem, green perilla stem, and red pepper stem are classified as agricultural crop residues, while pine needles, cherry leaves, cherry stem, maple leaves, gingko stem, and gingko leaves are classified as forest trees. The fraction of water-soluble components in the PM1.8 emission calculated from the sum of MOUDI impactor stages up to PM1.8 for each biomass type is
Conclusions
Size-resolved measurements of particulate matter emissions from combustion of 10 biomass materials were made to determine their gravimetric mass and water-soluble organic and inorganic components. Variances in emissions from different biomass burning sources and the observed differences in WSOC, K+, Cl−, and concentrations among these sources were examined. Mass fractions of WSOM, K+, Cl−, and in PM1.8 emissions were strongly dependent on the biomass type. Similar mass fraction
Acknowledgment
This study was financially supported by Chonnam National University, 2012. The authors would like to thank Kwang Yul Lee at GIST for his biomass burning sampling efforts.
References (30)
- et al.
Open burning of agricultural biomass: physical and chemical properties of particle-phase emissions
Atmospheric Environment
(2005) - et al.
Diurnal changes in the distribution of dicarboxylic acids, ketocarboxylic acids and dicarbonyls in the urban Tokyo atmosphere
Atmospheric Environment
(2005) - et al.
Characterization of particulate matter emission from open burning of rice straw
Atmospheric Environment
(2011) - et al.
Size distribution of trace organic species emitted from biomass combustion and meat charbroiling
Atmospheric Environment
(2008) - et al.
Particle size characteristics of levoglucosan in ambient aerosols from rice straw burning
Atmospheric Environment
(2008) - et al.
Molecular composition of PM2.5 organic aerosol measured at an urban site of Korea during the ACE-Asia campaign
Atmospheric Environment
(2006) - et al.
Chemical composition of fine particles in fresh smoke plumes from boreal wild-land fires in Europe
Science of the Total Environment
(2010) - et al.
Source identification and size distribution of atmospheric polycyclic aromatic hydrocarbons during rice straw burning period
Atmospheric Environment
(2006) - et al.
Biomass burning in the Amazon: characterization of the ionic component of aerosols generated from flaming and smoldering rainforest and savannah
Environmental Science and Technology
(1995) - et al.
Emission of trace gases and aerosols from biomass burning
Global Biogeochemical Cycles
(2001)
Physical and chemical properties of aerosols in the wet and dry seasons in Rondónia, Amazonia
Journal of Geophysical Research
Spatial and temporal variation of historical anthropogenic NMVOCs emission inventories in China
Atmospheric Chemistry and Physics
A technology-based global inventory of black and organic carbon emissions from combustion
Journal of Geophysical Research
Chemical composition and mass size distribution of fine particulate matter emitted by a small masonry heater
Boreal Environment Research
Overview of the inorganic and organic composition of size-segregated aerosol in Rondónia, Brazil, from the biomass-burning period to the onset of the wet season
Journal of Geophysical Research
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