Elemental and mineral characterisation of Coastal Antarctic Aerosols in snow using PIXE and SEM-EDAX

Ghermandi, Grazia; Laj, Paolo; Capotosto, M.; Cecchi, Rodolfo; Riontino, C.

doi:10.1016/s0168-583x(98)00901-x

Cited by 7 publications

(6 citation statements)

References 8 publications

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“…The results show that there is no correlation among the elements present in the soluble and insoluble particles of recent snow samples, indicating that these elements were generated by different sources. These results are in accordance to Ghermandi et al (1999), obtained at coastal Antarctic, that have found metals concentrations higher in the insoluble particles then in soluble particles in deposited snow. The mass concentrations of the elements identified in the soluble particles collected at different sampling points were compared using a linear regression test (Spearmann test, α=0.05).…”

Section: Elemental Composition Of Airborne Particlessupporting

confidence: 93%

Atmospheric Impacts due to Anthropogenic Activities in Remote Areas: The Case Study of Admiralty Bay/King George Island/Antarctic Peninsula

Leal

Joppert

Licínio

et al. 2007

Water Air Soil Pollut

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Section: Elemental Composition Of Airborne Particlessupporting

confidence: 93%

Atmospheric Impacts due to Anthropogenic Activities in Remote Areas: The Case Study of Admiralty Bay/King George Island/Antarctic Peninsula

Leal

Joppert

Licínio

et al. 2007

Water Air Soil Pollut

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“…Dissolved/particulate partitioning of metals in Antarctic snow was rarely investigated. [23][24][25] The distribution of elements between the soluble and insoluble phases was obtained by coupling PIXE and SEM-EDS measurements 23,24 or by performing PIXE analyses on both the soluble (<0.4 mm) and insoluble snow particles. 25 A general predominance of particulate fraction over the dissolved one was observed for a number of elements including Al, K, Ca, Sc, Ti, Si, V, Cr, Fe, Ni, Zn and Pb, although a great variability in the insoluble fraction percentage (2-100%) was reported for K and Ca.…”

Section: Partitioning Between Dissolved and Particulate Phasesmentioning

confidence: 99%

“…25 A general predominance of particulate fraction over the dissolved one was observed for a number of elements including Al, K, Ca, Sc, Ti, Si, V, Cr, Fe, Ni, Zn and Pb, although a great variability in the insoluble fraction percentage (2-100%) was reported for K and Ca. 24…”

Section: Partitioning Between Dissolved and Particulate Phasesmentioning

confidence: 99%

Major and trace element partitioning between dissolved and particulate phases in Antarctic surface snow

et al. 2011

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In order to provide a new insight into the Antarctic snow chemistry, partitioning of major and trace elements between dissolved and particulate (i.e. insoluble particles, >0.45 μm) phases have been investigated in a number of coastal and inland snow samples, along with their total and acid-dissolvable (0.5% nitric acid) concentrations. Alkaline and alkaline-earth elements (Na, K, Ca, Mg, Sr) were mainly present in the dissolved phase, while Fe and Al were predominantly associated with the particulate matter, without any significant difference between inland and coastal samples. On the other hand, partitioning of trace elements depended on the sampling site position, showing a general decrease of the particulate fraction by moving from the coast to the plateau. Cd, Cu, Pb and Zn were for the most part in the dissolved phase, while Cr was mainly associated with the particulate fraction. Co, Mn and V were equally distributed between dissolved and particulate phases in the samples collected from the plateau and preferentially associated with the particulate in the coastal samples. The correlation between the elements and the inter-sample variability of their concentration significantly decreased for the plateau samples compared to the coastal ones, according to a change in the relative contribution of the metal sources and in good agreement with the estimated marine and crustal enrichment factors. In addition, samples from the plateau were characterised by higher enrichment factors of anthropogenic elements (Cd, Cr, Cu, Pb and Zn), compared to the coastal area. Finally, it was observed that the acid-dissolvable metal concentrations were generally lower than the total concentration values, showing that the acid treatment can dissolve only a given fraction of the metal associated with the particulate (<20% for iron and aluminium).

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“…Considerable concerns have arisen on the extent of the pollution, particularly by the presence of metals in airborne particles. These observations lead to investigation of their origin with the development of characterization or speciation studies, using, for example, particle-induced X-ray emission (PIXE) [21], spectroscopy and Xray fluorescence [22], chemical analysis, and scanning electron microscopy coupled to an energy-dispersive X-ray spectrometer (SEM-EDAX) [23]. Highly sensitive and non-destructive techniques are useful for the direct analysis of particles collected on filters.…”

Section: Introductionmentioning

confidence: 99%

<b>Mass concentrations and elemental composition of urban atmospheric aerosols in Addis Ababa, Ethiopia</b>

Gebre

Feleke

Sahle-Demissie³

2010

Bull. Chem. Soc. Eth.

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in urban and peri-urban areas of Addis Ababa, Ethiopia, with the aim to assess the spatial and temporal aspects of total suspended particulate (TSP) and particulate matter with aerodynamic diameter less than 10 µm (PM10) and their composition in terms of metallic elements. Sixty six filter samples were collected from seven distinct sites using I.O.M. multi fraction dust samplers and fiber glass filter papers. The mass of each particulate matter sample was measured gravimetrically and the composition of PM10 samples was analyzed using ICP-OAES and SEM-EDAX. The concentration of TSP was in the range of 17-556 µg/m 3 and that of PM10 was in the range of 17-285 µg/m 3. The highest TSP and PM10 peak values were observed in February 2008 at two sites, whereas the lowest TSP and PM10 values were observed in June and July 2008 at two sites. The mean TSP concentration surpassed the WHO safe guideline value of 150 µg/m 3 and 79 % of the PM10 values were below the WHO guideline value. The PM10 to TSP mass ratio was in the range 0.26-0.59 and PM10 mass contributed about 39% to the TSP mass. The average element concentration in PM10 filter sample was in the order of Ca > Na > K > Zn > Sb > B > Al > V > Mg > S > Fe. All the analyzed elements contributed about 0.1% to the PM10 mass. SEM-EDAX analysis of PM10 samples showed that Si, Al, Na, Zn, Ba, K and C were the predominant species. Crustal materials contributed 76-95% of the filter mass, and C and Cu represented 5-24%. The size distribution of aerosol particles as derived from SEM analysis was in 0.43-9.3 µm range.

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Elemental and mineral characterisation of Coastal Antarctic Aerosols in snow using PIXE and SEM-EDAX

Cited by 7 publications

References 8 publications

Atmospheric Impacts due to Anthropogenic Activities in Remote Areas: The Case Study of Admiralty Bay/King George Island/Antarctic Peninsula

Atmospheric Impacts due to Anthropogenic Activities in Remote Areas: The Case Study of Admiralty Bay/King George Island/Antarctic Peninsula

Major and trace element partitioning between dissolved and particulate phases in Antarctic surface snow

<b>Mass concentrations and elemental composition of urban atmospheric aerosols in Addis Ababa, Ethiopia</b>

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