Saharan dust episodes in Hungarian aerosol: elemental signatures and transport trajectories

Borbély-Kiss, I.; Kiss, Á.Z.; Koltay, E.; Szabó, Gy.; Bozó, László

doi:10.1016/j.jaerosci.2004.05.001

Cited by 75 publications

(49 citation statements)

References 30 publications

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“…Thus the Ti/Ca ratio is a good marker for these kinds of events in the study area. Its increment factor, 1.53, is very similar to that found by Borbé ly- Kiss et al (2004), at an urban area in Hungary, or by Marenco et al (2006), at the Global Atmospheric Watch Station of Monte Cimone (2165 m amsl), Italy. The Al/Ca ratio in these two cited studies presented a notable increase but showed no variation at our sampling site.…”

Section: à3supporting

confidence: 78%

“…The use of models, images and satellite data, reinforced with back-trajectory calculations (Dulac et al, 1992), has been complemented with the study of typical markers like the ratios of some crustal elements, for example Ti/Ca and Ti/Fe (Bonelli et al, 1996;Marenco et al, 2006;Borbé ly-Kiss et al, 2004). Another possibility for the study of long-range transport is the use of concentration fields (CF), a technique that combines information from back-trajectories with the PM component concentrations at the sampling site (Salvador et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Quantification of Saharan and local dust impact in an arid Mediterranean area by the positive matrix factorization (PMF) technique

Nicolás

Chiari

Crespo

et al. 2008

Atmospheric Environment

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a b s t r a c tParticle composition data for PM 10 samples collected at an urban background location in Elche in southeastern Spain from December 2004 to November 2005 were analysed to provide source identification and apportionment. A total of 120 samples were collected and analysed by Particle Induced X-ray Emission (PIXE) and ion chromatography. Positive matrix factorization (PMF) was used to estimate sources profiles and their mass contributions. The PMF modelling identified six sources: PM 10 mass was apportioned to secondary nitrate (26%), secondary sulphate (22%), local soil dust (21%), traffic (13%), seasalt (11%) and African dust (7%). It is worth noting that PMF was able to identify a Saharan dust source even in the presence of a weighty local dust source, and to quantitatively estimate the contributions of these two sources. The African dust contribution varies, depending on the intrusion days, within a range of 5-40% of the total PM 10 concentration. Without the contribution of Saharan dust, 50% of the total exceedances of the PM 10 50 mg m À3 EC limit during the studied period would not have taken place.

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Section: à3supporting

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Quantification of Saharan and local dust impact in an arid Mediterranean area by the positive matrix factorization (PMF) technique

Nicolás

Chiari

Crespo

et al. 2008

Atmospheric Environment

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“…To distinguish between local soil dust and Saharan dust, a stringent signature may be given by elemental ratios (Bonelli et al, 1996;Borbély-Kiss et al, 2004;Marenco et al, 2006). In Fig.…”

Section: Elemental Signaturesmentioning

confidence: 99%

“…Nevertheless, as the impact of desert dust at ground level is well characterised by an increase of all soil-related elements and changes in elemental ratios, field campaigns followed by elemental analysis can indeed be very effective to assess the real impact of these episodes on PM at ground level (Marcazzan et al, 1993;Bonelli et al, 1996;Borbély-Kiss et al, 2004;Chiari et al, 2005;Marenco et al, 2006;Nicolás et al, 2008). The choice of methods not relying on elemental data is mainly due to cost and time required for reliable chemical speciation analysis.…”

Section: Introductionmentioning

confidence: 99%

Saharan dust impact in central Italy: An overview on three years elemental data records

Nava

Becagli

Calzolai

et al. 2012

Atmospheric Environment

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h i g h l i g h t s< PIXE is very effective to quantify the actual mineral dust contribution to PM. < The impact of Saharan intrusions on PM10 is extremely variable from case to case. t r a c tIn southern European countries, Saharan dust may episodically produce significant increases of PM10, which may also cause the exceedance of the PM10 daily limit value established by the European Directive (2008/50/EC). The detection with very high sensitivity of all the elements that constitute mineral dust makes PIXE technique a very effective tool to assess the actual impact of these episodes.In this work, a review of long-term series of elemental concentrations obtained by PIXE has been accomplished with the aim of identifying the occurrence of Saharan dust transport episodes over long periods in Tuscany and characterising them in terms of composition and impact on PM concentration, tracing back their contribution to the exceedances of the PM10 limit value.The impact of the different Saharan intrusions on PM10 showed a very high variability. During the most intense episodes (which occurred with a frequency of few times per year) the calculated soil dust . The Saharan dust contribution was decisive to cause the exceedance of the PM10 daily limit value in the 1e2% of the days considered in the present work.

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“…It is well known that Saharan dust appears in the air from time to time, not only in southern Europe (Sagnotti et al 2006) or in the Canary islands (Lázaro et al 2008), but also in Hungary (Borbély-Kiss et al 2004). It was detected in PM20 and PM10 samples, particularly frequently in March and in November at the Hungarian station of Debrecen.…”

Section: Magnetic Monitoring Geochemical and Mineralogical Analysis mentioning

confidence: 99%

Magnetic monitoring, geochemical and mineralogical analysis of settled dust from North and Central Transdanubia, Hungary

Márton

Zajzon

Lautner³

et al. 2012

Central European Geology

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Ferromagnetic grains in airborne dust are important indicators of vehicle traffic, some industrial sources and combustion/heating. Settled dust consists mainly of diamagnetic material; therefore accessory ferromagnetic grains are readily indicated by magnetic measurements. In this paper settled dust samples collected on a monthly basis in the years 2008-2011 were studied. Non-destructive magnetic measurements were followed by geochemical and mineralogical analyses. In selected samples we identified airborne anthropogenic materials (e.g. silicate and magnetite spherules), minerals from the natural environment and organic material. Seasonally appearing materials (e.g. soot in winter, plant fragments and pollen in summer) increased the mass of the settled dust, but not the magnetic susceptibility. Thus, we realized that the generally interpreted mass susceptibility in environmental magnetic studies would not always appropriately characterize the magnetic pollution. In the interpretation we gave preference to total susceptibility because of its direct connection to the pollution, except in comparison with metal concentrations.Trends in magnetic pollution were eventually analyzed for 19 sampling sites. Irrespective of the degree and source of the pollution the monthly variation curves of magnetic susceptibility exhibit a general maximum (March-April), followed by gradual decrease. A corresponding peak is observed in the amounts of dust. Both can be explained by re-suspension of dust settled in winter. The additional maxima in the mass of the dust (June and August, respectively) are probably due to contribution from vegetation and/or an artifact from algaecide. For three key sampling sites comparison was made between the concentrations of 12 metals and the respective mass susceptibilities and good linear correlation was found for Fe, Mn and Zn for all, for Cr, Cu, Pb, V, Ba, Sr and Zr for two sampling sites. Cd, which is enriched in all samples, does not correlate with the magnetic susceptibility.

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Saharan dust episodes in Hungarian aerosol: elemental signatures and transport trajectories

Cited by 75 publications

References 30 publications

Quantification of Saharan and local dust impact in an arid Mediterranean area by the positive matrix factorization (PMF) technique

Quantification of Saharan and local dust impact in an arid Mediterranean area by the positive matrix factorization (PMF) technique

Saharan dust impact in central Italy: An overview on three years elemental data records

Magnetic monitoring, geochemical and mineralogical analysis of settled dust from North and Central Transdanubia, Hungary

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