Characterization of the water soluble fraction in ultrafine, fine, and coarse atmospheric aerosol

Barbaro, Elena; Feltracco, Matteo; Cesari, Daniela; Padoan, Sara; Zangrando, Roberta; Contini, Daniele; Barbante, Carlo; Gambaro, Andrea

doi:10.1016/j.scitotenv.2018.12.298

Cited by 42 publications

(35 citation statements)

References 101 publications

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“…This could suggest the interest of adding oxalate within PMF analyses, although this should be confirmed with additional organic tracers. Additionally, the authors of Reference [44] have recently found a primary biogenic factor in Venice (Italy) with a similar contribution of around 3% in PM 10 , which is consistent with our result, but no knowledge of the comparability of these two sites regarding primary biogenic emissions is available. A recent study [45] in Saclay (Paris region) highlighted a similar seasonality of bioaerosols, and also pointed out that wind (speed and direction) may be a predominant meteorological parameter, suggesting potential transport over various geographical scales.…”

Section: Naturally-driven Sourcessupporting

confidence: 91%

Sources and Geographical Origins of PM10 in Metz (France) Using Oxalate as a Marker of Secondary Organic Aerosols by Positive Matrix Factorization Analysis

et al. 2019

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An original source apportionment study was conducted on atmospheric particles (PM10) collected in Metz, one of the largest cities of Eastern France. A Positive matrix factorization (PMF) analysis was applied to a sampling filter-based chemical dataset obtained for the April 2015 to January 2017 period. Nine factors were clearly identified, showing mainly contributions from anthropogenic sources of primary PM (19.2% and 16.1% for traffic and biomass burning, respectively) as well as secondary aerosols (12.3%, 14.5%, 21.8% for sulfate-, nitrate-, and oxalate-rich factors, respectively). Wood-burning aerosols exhibited strong temporal variations and contributed up to 30% of the PM mass fraction during winter, while primary traffic concentrations remained relatively constant throughout the year. These two sources are also the main contributors during observed PM10 pollution episodes. Furthermore, the dominance of the oxalate-rich factor among other secondary aerosol factors underlines the role of atmospheric processing to secondary organic aerosol loadings which are still poorly characterized in this region. Finally, Concentration-Weighted Trajectory (CWT) analysis were performed to investigate the geographical origins of the apportioned sources, notably illustrating a significant transport of both nitrate-rich and sulfate-rich factors from Northeastern Europe but also from the Balkan region.

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Section: Naturally-driven Sourcessupporting

confidence: 91%

Sources and Geographical Origins of PM10 in Metz (France) Using Oxalate as a Marker of Secondary Organic Aerosols by Positive Matrix Factorization Analysis

et al. 2019

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“…This result is also well documented in previous studies. Barbaro et al () found Gly in aerosols can be used as an indicator of biomass burning. Feltracco et al () reported a higher concentration of free Gly in aerosol that originated from Northern Russian wildfire events.…”

Section: Discussionmentioning

confidence: 99%

“…As a one of the most important organic nitrogen (ON) compound classes, amino acids (AAs) including free amino acids (FAAs) and combined amino acids (CAAs) have been measured extensively in aerosols (Barbaro et al, ; Feltracco et al, ; Filippo et al, ; Mandalakis et al, ). Interest in AAs in the atmosphere is partly driven by their important roles in enhancing the ice nucleating ability or cloud condensation nuclei ability of atmospheric particles (Chan et al, ; Szyrmer & Zawadzki, ), which can affect the global climate and the scavenging of air pollutants (Zhang & Anastasio, ).…”

Section: Introductionmentioning

confidence: 99%

Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5

et al. 2020

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Amino acids is an important organic nitrogen compound class in aerosol. Its origins and transformation in the atmosphere remain poorly understood. The concentrations of free amino acids (FAAs) and combined amino acids (CAAs) and δ15N values of free and combined Glycine (Gly) in PM2.5 and main emission sources (plant, soil, and aerosol from biomass burning) were investigated from five sampling sites in Nanchang area (Jiangxi Province, China). Our results showed that the composition profiles of CAAs and FAAs were quite different from each other in PM2.5. For CAAs, percentages of individual combined amino acids were different between biomass burning sources and plant or soil sources, and we found that the composition profiles of aerosol CAAs could reflect the contribution of the main emission sources. For FAAs, a predominance of free Gly was observed in aerosol FAAs pool because atmospheric photooxidative processes could increase free Gly and decrease other reactive FAAs. This implied that the composition of aerosol FAAs could not reflect their origins. A strong correlation between δ15NF‐Gly values in aerosols or sources and the δ15NC‐Gly values in their parent CAAs was observed, indicating that the isotope effect associated with Gly transformation in aerosols may be small. Additionally, we found more positive δ15NGly in aerosols emitted by biomass burning, which was likely due to 15N‐depleted amino‐N loss from Gly molecule. The results suggested that δ15NGly values in aerosols might be used to identify biomass burning sources.

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“…Hence, the Sea Sweep aerosol samples were considered primary marine aerosols (Bates et al, 2012). Primary marine emissions are known to have complex compositions, including contributions from both salt and organic compounds (Barbaro et al, 2019).…”

Section: Primary Marine Aerosol Collectionmentioning

confidence: 99%

Ice Nucleation by Marine Aerosols Over the North Atlantic Ocean in Late Spring

et al. 2020

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Here we report the ice nucleating temperatures of marine aerosols sampled in the subarctic Atlantic Ocean during a phytoplankton bloom. Ice nucleation measurements were conducted on primary aerosol samples and phytoplankton isolated from seawater samples. Primary marine aerosol samples produced by a specialized aerosol generator (the Sea Sweep) catalyzed droplet freezing at temperatures between −33.4 °C and − 24.5 °C, with a mean freezing temperature of −28.5 °C, which was significantly warmer than the homogeneous freezing temperature of pure water in the atmosphere (−36 °C). Following a storm‐induced deep mixing event, ice nucleation activity was enhanced by two metrics: (1) the fraction of aerosols acting as ice nucleating particles (INPs) and (2) the nucleating temperatures, which were the warmest observed throughout the project. Seawater samples were collected from the ocean's surface and phytoplankton groups, including Synechococcus, picoeukaryotes, and nanoeukaryotes, were isolated into sodium chloride sheath fluid solution using a cell‐sorting flow cytometer. Marine aerosol containing Synechococcus, picoeukaryotes, and nanoeukaryotes serves as INP at temperatures significantly warmer than the homogeneous freezing temperature of pure water in the atmosphere. Samples containing whole organisms in 30 g L−1 NaCl had freezing temperatures between −33.8 and − 31.1 °C. Dilution of samples to representative atmospheric aerosol salt concentrations (as low as 3.75 g L−1 NaCl) raised freezing temperatures to as high as −22.1 °C. It follows that marine aerosols containing phytoplankton may have widespread influence on marine ice nucleation events by facilitating ice nucleation.

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Characterization of the water soluble fraction in ultrafine, fine, and coarse atmospheric aerosol

Cited by 42 publications

References 101 publications

Sources and Geographical Origins of PM10 in Metz (France) Using Oxalate as a Marker of Secondary Organic Aerosols by Positive Matrix Factorization Analysis

Sources and Geographical Origins of PM10 in Metz (France) Using Oxalate as a Marker of Secondary Organic Aerosols by Positive Matrix Factorization Analysis

Sources and Transformation Processes of Proteinaceous Matter and Free Amino Acids in PM2.5

Ice Nucleation by Marine Aerosols Over the North Atlantic Ocean in Late Spring

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