Molecular distributions of dicarboxylic acids, ketocarboxylic acids and α-dicarbonyls in biomass burning aerosols: implications for photochemical production and degradation in smoke layers

Kundu, Shuvashish; Kawamura, Kimitaka; Andreae, T. W.; Hoffer, András; Andreae, Meinrat O.

doi:10.5194/acp-10-2209-2010

Cited by 209 publications

(211 citation statements)

References 67 publications

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“…In case of the haze episode observed in this study, a substantial portion of the dicarboxylic acids was likely derived from atmospheric oxidation, namely, aging processes, during transport of the smoke particles to the sampling site in light of the favorable conditions. A substantial increase in water-soluble organics in smoke aerosols, including organic acids, has also been reported from previous studies in SEA and elsewhere (Agarwal et al, 2010;Graham et al, 2002;Gao et al, 2003;Kundu et al, 2010).…”

Section: Chemical Speciation Of Tspmentioning

confidence: 66%

Assessing the regional impact of indonesian biomass burning emissions based on organic molecular tracers and chemical mass balance modeling

Engling

Betha

et al. 2014

Atmos. Chem. Phys.

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Abstract. Biomass burning activities commonly occur in Southeast Asia (SEA), and are particularly intense in Indonesia during the dry seasons. The effect of biomass smoke emissions on air quality in the city state of Singapore was investigated during a haze episode in October 2006. Substantially increased levels of airborne particulate matter (PM) and associated chemical species were observed during the haze period. Specifically, the enhancement in the concentration of molecular tracers for biomass combustion such as levoglucosan by as much as two orders of magnitude and the diagnostic ratios of individual organic compounds indicated that biomass burning emissions caused a regional smoke haze episode due to their long-range transport by prevailing winds. With the aid of air mass backward trajectories and chemical mass balance modeling, large-scale forest and peat fires in Sumatra and Kalimantan were identified as the sources of the smoke aerosol, exerting a significant impact on air quality in downwind areas, such as Singapore.

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Section: Chemical Speciation Of Tspmentioning

confidence: 66%

Assessing the regional impact of indonesian biomass burning emissions based on organic molecular tracers and chemical mass balance modeling

Engling

Betha

et al. 2014

Atmos. Chem. Phys.

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“…The C max was observed for heptanedioic acid in a concentration range from 0.28 mg g À1 OC (woodstove with cold start e cork oak) to 10.2 mg g À1 OC (fireplace with hot start e Holm oak). Dicarboxylic acids in the same carbon range have been detected previously in the emissions from residential wood burning (Fine et al, 2004a,b;Gonçalves et al, 2010) and from wildfires (Alves et al, , 2011Kundu et al, 2010). Average concentrations of total dicarboxylic acids in PM 2.5 samples collected during the burning season in Amazonia were 2e8 times higher than those reported in urban aerosols (Kundu et al, 2010).…”

Section: Homologous Compound Seriesmentioning

confidence: 75%

“…Dicarboxylic acids in the same carbon range have been detected previously in the emissions from residential wood burning (Fine et al, 2004a,b;Gonçalves et al, 2010) and from wildfires (Alves et al, , 2011Kundu et al, 2010). Average concentrations of total dicarboxylic acids in PM 2.5 samples collected during the burning season in Amazonia were 2e8 times higher than those reported in urban aerosols (Kundu et al, 2010). However, dicarboxylic acids are ubiquitous compounds that can be generated from several primary sources or secondary processes and, thus, cannot be regarded as biomass burning tracers.…”

Section: Homologous Compound Seriesmentioning

confidence: 86%

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Organic compounds in PM2.5 emitted from fireplace and woodstove combustion of typical Portuguese wood species

Gonçalves

Alves

Fernandes

et al. 2011

Atmospheric Environment

112

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a b s t r a c tThe aim of this study is the further characterisation of PM 2.5 emissions from the residential wood combustion of common woods grown in Portugal. This new research extends to eight the number of biomass fuels studied and tries to understand the differences that the burning appliance (fireplace versus woodstove) and the combustion temperature (cold and hot start) have on emissions. Pinus pinaster (Maritime pine), Eucalyptus globulus (eucalypt), Quercus suber (cork oak), Acacia longifolia (Golden wattle), Quercus faginea (Portuguese oak), Olea europea (Olive), Quercus ilex rotundifolia (Holm oak) and briquettes produced from forest biomass waste were used in the combustion tests. Determinations included fine particle emission factors, carbonaceous content (OC and EC) by a thermaleoptical transmission technique and detailed identification and quantification of organic compounds by gas chromatographyemass spectrometry. Fine particle emission factors from the woodstove were lower than those from the fireplace. For both combustion appliances, the OC/EC ratio was higher in "cold start" tests (1.56 AE 0.95 for woodstove and 2.03 AE 1.34 for fireplace). These "cold start" OC/EC values were, respectively, for the woodstove and the fireplace, 51% and 69% higher than those obtained in "hot start" experiments. The chromatographically resolved organics included n-alkanes, n-alkenes, PAHs, n-alkanals, ketones, n-alkanols, terpenoids, triterpenoids, phenolic compounds, phytosterols, alcohols, n-alkanoic acids, n-di-acids, unsaturated acids and alkyl esters of acids. The smoke emission rate and composition varied widely depending on fuel type, burning appliance and combustion temperature.

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“…The ubiquity of di-carboxylic acids (DCA) is well documented both in urban and rural terrestrial aerosol and marine aerosol (Warneck, 2003;Tan et al, 2010;Sempéré and Kawamura, 1996;Pavuluri et al, 2010;Ma et al, 2013;Kundu et al, 2010;Kawamura et al, 1996Kawamura et al, , 2007Gierlus et al, 2012;Altieri et al, 2008). A recent study of marine aerosol from around the globe found that DCA contribute on average ∼ 15 % to total marine organic aerosol (OA) mass (Fu et al, 2013;Myriokefalitakis et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Inorganic salts interact with oxalic acid in submicron particles to form material with low hygroscopicity and volatility

et al. 2014

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Abstract. Volatility and hygroscopicity are two key properties of organic aerosol components, and both are strongly related to chemical identity. While the hygroscopicities of pure salts, di-carboxylic acids (DCA), and DCA salts are known, the hygroscopicity of internal mixtures of these components, as they are typically found in the atmosphere, has not been fully characterized. Here we show that inorganicorganic component interactions typically not considered in atmospheric models can lead to very strongly bound metalorganic complexes and greatly affect aerosol volatility and hygroscopicity; in particular, the bi-dentate binding of DCA to soluble inorganic ions. We have studied the volatility of pure, dry organic salt particles and the hygroscopicity of internal mixtures of oxalic acid (OxA, the dominant DCA in the atmosphere) and a number of salts, both mono-and divalent. The formation of very low volatility organic salts was confirmed, with minimal evaporation of oxalate salt particles below 75 • C. Dramatic increases in the cloud condensation nuclei (CCN) activation diameter for particles with di-valent salts (e.g., CaCl 2 ) and relatively small particle volume fractions of OxA indicate that standard volume additivity rules for hygroscopicity do not apply. Thus small organic compounds with high O : C ratios are capable of forming lowvolatility and very low hygroscopicity particles. Given current knowledge of the formation mechanisms of OxA and M-Ox salts, surface enrichment of insoluble M-Ox salts is expected. The resulting formation of an insoluble coating of metal-oxalate salts can explain low-particle hygroscopicities. The formation of particles with a hard coating could offer an alternative explanation for observations of glass-like particles without the need for a phase transition.

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Molecular distributions of dicarboxylic acids, ketocarboxylic acids and α-dicarbonyls in biomass burning aerosols: implications for photochemical production and degradation in smoke layers

Cited by 209 publications

References 67 publications

Assessing the regional impact of indonesian biomass burning emissions based on organic molecular tracers and chemical mass balance modeling

Assessing the regional impact of indonesian biomass burning emissions based on organic molecular tracers and chemical mass balance modeling

Organic compounds in PM2.5 emitted from fireplace and woodstove combustion of typical Portuguese wood species

Inorganic salts interact with oxalic acid in submicron particles to form material with low hygroscopicity and volatility

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