Carbonaceous and ionic compositional patterns of fine particles over an urban Mediterranean area

Pateraki, St.; Assimakopoulos, Vasiliki D.; Bougiatioti, A.; Kouvarakis, Giorgos; Mihalopoulos, N.; Vasilakos, Christos

doi:10.1016/j.scitotenv.2012.02.046

Cited by 43 publications

(54 citation statements)

References 51 publications

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“…It is shown that SOC is a major contributor to OC during the warm season in the area, as also indicated by Bougiatioti et al (2013) and Lonati et al (2007), underlying the secondary nature of fine particles (Pateraki et al, 2012). In absolute values, the average in Athens is lower than the one (2.7 µg m −3 ) reported by Sanchez de la Campa et al (2009) ( Fig.…”

Section: Estimation Of Secondary Organic Carbonsupporting

confidence: 66%

“…A description of the Athens Basin and prevailing meteorological conditions has been provided in the literature (Chaloulakou et al, 2005;Grivas et al, 2008Grivas et al, , 2012Kanakidou et al, 2011;Theodosi et al, 2011). Studies performed in the Athens Basin demonstrated the prevailing emissions of carbonaceous aerosol all year round, namely from vehicles, fuel combustion and long-range transport (Chaloulakou et al, 2005;Sillanpaa et al, 2006;Grivas et al, 2012;Pateraki et al, 2012;Remoundaki et al, 2013). Nevertheless, it is essential to note that there are limited studies concerning the PM 2.5 fraction of aerosol in Athens, and the studies performed so far have been conducted for short time periods (4-11 months), mainly at urban locations.…”

Section: Paraskevopoulou Et Al: Long-term Characterization Of Orgmentioning

confidence: 99%

“…Turpin and Lim (2001) Pateraki et al (2012) 12 Terzi et al (2010) 13 Bougiatioti et al (2013) 14 Koulouri et al (2008) 15 16 Kopanakis et al (2012) 17 Piazzola et al (2012) 18 Pey et al (2009a) 19 Pey et al (2009b) suggest the use of different conversion factors according to site type: 1.6 ± 0.2 for urban areas, 1.9-2.3 for aged aerosols and 2.2-2.6 for biomass burning. Taking into account that our site is an urban background station which is also affected by long-range transport (e.g., Sciare et al, 2005;Kanakidou et al, 2011;Pateraki et al, 2012;Remoundaki et al, 2013), we used the value of 2.1 (OM = 2.1 · OC). On average, OM accounts for 24 ± 6 % of PM 2.5 , which is consistent with the value (22 %) provided by Remoundaki et al (2013) for Athens, while it is lower than those reported at other European sites (e.g., Sillanpaa et al, 2005;Sanchez de la Campa et al, 2009).…”

Section: Mass Concentrations Of Oc-ec and Observed Seasonal Trendsmentioning

confidence: 99%

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Long-term characterization of organic and elemental carbon in the PM2.5 fraction: the case of Athens, Greece

et al. 2014

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Abstract. Organic carbon (OC), elemental carbon (EC), water-soluble organic carbon (WSOC) and main ions were measured in a total of 1510 PM 2.5 daily aerosol samples collected from May 2008 to April 2013 in Athens, Greece. OC and EC concentrations were 2.1 ± 1.3 µg m −3 and 0.54 ± 0.39 µg m −3 , accounting for 11 ± 3 % and 3 ± 1 % of PM 2.5 mass, respectively, with an average OC / EC ratio of 4.7 ± 3.1. Significant correlation was found between OC and EC during the whole period, indicating emissions by common primary sources on a regional scale. WSOC concentration ranged from 0.03 to 10.6 µg m −3 , with an average of 1.5 ± 0.9 µg m −3 . By considering the Finokalia (Crete) station as a reference, it was estimated that, during the warm season in Athens, 67 ± 7 % of emitted OC and 53 ± 12 % of emitted EC is regional, while, during cold months, the regional contribution of OC is only 33 ± 7 % and of EC 29 ± 8 %. Furthermore, secondary organic carbon (SOC) was calculated for the warm period of the year (April to October). The estimated SOC constituted about 75 ± 6 % of PM 2.5 organic carbon in Athens, highlighting significant aging processes on a regional scale. In the period 2011-2013 and during wintertime, an increase in OC and EC levels was observed, attributed to an increase in wood burning for domestic heating due to the economic crisis.

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Section: Estimation Of Secondary Organic Carbonsupporting

confidence: 66%

Section: Paraskevopoulou Et Al: Long-term Characterization Of Orgmentioning

confidence: 99%

Section: Mass Concentrations Of Oc-ec and Observed Seasonal Trendsmentioning

confidence: 99%

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Long-term characterization of organic and elemental carbon in the PM2.5 fraction: the case of Athens, Greece

et al. 2014

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“…Grivas et al (2007) calculated the contribution of the sum of POM and EC to PM 2.5 at 31 % for central Athens. Pateraki et al (2011) collected in 3 locations around Athens in summer and winter in 2008. POM and EC accounted for 32 and 37 % of the PM 2.5 and PM 1 mass respectively in agreement with our conclusions reported in the present manuscript.…”

Section: Chemical Mass Closurementioning

confidence: 99%

Mass and chemical composition of size-segregated aerosols (PM1, PM2.5, PM10) over Athens, Greece: local versus regional sources

et al. 2011

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Abstract.To identify the relative contribution of local versus regional sources of particulate matter (PM) in the Greater Athens Area (GAA), simultaneous 24-h mass and chemical composition measurements of size segregated particulate matter (PM 1 , PM 2.5 and PM 10 ) were carried out from September 2005 to August 2006 at three locations: one urban (Goudi, Central Athens, "GOU"), one suburban (Lykovrissi, Athens, "LYK") in the GAA and one at a regional background site (Finokalia, Crete, "FKL").The two stations in the GAA exceeded the EU-legislated PM 10 limit values, both in terms of annual average (59.0 and 53.6 µg m −3 for Lykovrissi and Goudi, respectively) and of 24-h value. High levels of PM 2.5 and PM 1 were also found at both locations (23.5 and 18.6 for Lykovrissi, while 29.4 and 20.2 µg m −3 for Goudi, respectively).Significant correlations were observed between the same PM fractions at both GAA sites indicating important spatial homogeneity within GAA. During the warm season (April to September), the PM 1 ratio between GAA and FKL ranged from 1.1 to 1.3. On the other hand this ratio was significantly higher (1.6-1.7) during the cold season (October to March) highlighting the role of long-range transport and local sources during the warm and cold seasons respectively. Regarding the coarse fraction no seasonal trend was observed for both GAA sites with their ratio (GAA site/FKL) being higher than 2 indicating significant contribution from local sources such as soil and/or road dust.Chemical speciation data showed that on a yearly basis, ionic and crustal mass represent up to 67-70 % of the gravimetrically determined mass for PM 10 samples in the GAA Correspondence to: N. Mihalopoulos (mihalo@chemistry.uoc.gr) and 67 % for PM 1 samples in LYK. The unidentified mass might be attributed to organic matter (OM) and elemental carbon (EC), in agreement with the results reported by earlier studies in central Athens. At all sites, similar seasonal patterns were observed for nss-SO 2− 4 , a secondary compound, indicating significant contribution from regional sources in agreement with PM 1 observations. The contribution of local sources at both GAA sites was also estimated by considering mass and chemical composition measurements at Finokalia as representative of the regional background. Particulate Organic Matter (POM) and EC, seemed to be the main contributor of the local PM mass within the GAA (up to 62 % in PM 1 ). Dust from local sources contributed also significantly to the local PM 10 mass (up to 33 %).

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“…Anthropogenic aerosols in the Barcelona area can be a major source of nitrogen and phosphorous to the atmosphere (Querol et al 2004, Izquierdo et al 2012. Furthermore, they are much richer than Saharan particles in organic carbon, particularly in black carbon produced by high temperature combustion processes (Querol et al 2001, Pateraki et al 2012. On the other hand, anthropogenic aerosols tend to contain high amounts of copper, lead and other trace metals, which are known to be toxic to microbiota at high concentrations (Paytan et al 2009, Jordi et al 2012.…”

Section: Introductionmentioning

confidence: 99%

Aerosol inputs affect the optical signatures of dissolved organic matter in NW Mediterranean coastal waters

et al. 2016

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Summary: Aeolian inputs of organic and inorganic nutrients to the ocean are important as they can enhance biological production in surface waters, especially in oligotrophic areas like the Mediterranean. The Mediterranean littoral is particularly exposed to both anthropogenic and Saharan aerosol depositions on a more or less regular basis. During the last few decades experimental studies have been devoted to examining the effect of inorganic nutrient inputs from dust on microbial activity. In this study, we performed experiments at two different locations of the NW Mediterranean, where we evaluated the changes in the quality and quantity of dissolved organic matter due to atmospheric inputs of different origin (Saharan and anthropogenic) and its subsequent transformations mediated by microbial activities. In both experiments the humic-like and protein-like substances, and the fluorescence quantum yield increased after addition. In general, these changes in the quality of dissolved organic matter did not significantly affect the prokaryotes. The recalcitrant character of the fluorescent dissolved organic matter (FDOM) associated with aerosols was confirmed, as we found negligible utilization of chromophoric compounds over the experimental period. We framed these experiments within a two-year time series data set of atmospheric deposition and coastal surface water analyses. These observations showed that both Saharan and anthropogenic inputs induced changes in the quality of organic matter, increasing the proportion of FDOM substances. This increase was larger during Saharan dust events than in the absence of Saharan influence.Keywords: FDOM; aerosol deposition; DOC; Mediterranean Sea. Los aportes de aerosoles afectan las propiedades ópticas de la materia orgánica disuelta en las aguas costeras del Mediterráneo NoroccidentalResumen: Los aportes atmosféricos de nutrientes orgánicos e inorgánicos al océano son importantes ya que pueden aumentar la producción biológica en aguas superficiales, especialmente en las zonas oligotróficas como el Mediterráneo. El litoral del Mediterráneo está particularmente expuesto a aportes de origen antropogénico y a deposiciones de polvo sahariano de forma más o menos regular. Durante las últimas décadas los estudios experimentales se han dedicado, sobre todo, a examinar el efecto de la entrada de nutrientes inorgánicos atmosféricos sobre la actividad microbiana. En este estudio, se realizaron experimentos con comunidades microbianas procedentes de dos zonas del Mediterráneo noroccidental. Se evaluaron los cambios en la calidad y cantidad de la materia orgánica disuelta debido a aportes atmosféricos de distinto origen y sus posteriores transformaciones mediadas por actividades microbianas. En ambos experimentos las sustancias orgánicas fluorescentes y el rendimiento cuántico de fluorescencia aumentaron después de la adición de material atmosférico. En general, estos cambios en la calidad de la materia orgánica no afectaron significativamente a los organismos procariotas. El carácter r...

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Carbonaceous and ionic compositional patterns of fine particles over an urban Mediterranean area

Cited by 43 publications

References 51 publications

Long-term characterization of organic and elemental carbon in the PM<sub>2.5</sub> fraction: the case of Athens, Greece

Long-term characterization of organic and elemental carbon in the PM<sub>2.5</sub> fraction: the case of Athens, Greece

Mass and chemical composition of size-segregated aerosols (PM<sub>1</sub>, PM<sub>2.5</sub>, PM<sub>10</sub>) over Athens, Greece: local versus regional sources

Aerosol inputs affect the optical signatures of dissolved organic matter in NW Mediterranean coastal waters

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Carbonaceous and ionic compositional patterns of fine particles over an urban Mediterranean area

Cited by 43 publications

References 51 publications

Long-term characterization of organic and elemental carbon in the PM&lt;sub&gt;2.5&lt;/sub&gt; fraction: the case of Athens, Greece

Long-term characterization of organic and elemental carbon in the PM&lt;sub&gt;2.5&lt;/sub&gt; fraction: the case of Athens, Greece

Mass and chemical composition of size-segregated aerosols (PM&lt;sub&gt;1&lt;/sub&gt;, PM&lt;sub&gt;2.5&lt;/sub&gt;, PM&lt;sub&gt;10&lt;/sub&gt;) over Athens, Greece: local versus regional sources

Aerosol inputs affect the optical signatures of dissolved organic matter in NW Mediterranean coastal waters

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Long-term characterization of organic and elemental carbon in the PM<sub>2.5</sub> fraction: the case of Athens, Greece

Long-term characterization of organic and elemental carbon in the PM<sub>2.5</sub> fraction: the case of Athens, Greece

Mass and chemical composition of size-segregated aerosols (PM<sub>1</sub>, PM<sub>2.5</sub>, PM<sub>10</sub>) over Athens, Greece: local versus regional sources