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Elemental composition of aircraft-sampled aerosols above the Southern Bight of the North Sea
Rojas, C.M.; Van Grieken, R.; Maenhaut, W. (1993). Elemental composition of aircraft-sampled aerosols above the Southern Bight of the North Sea. Water Air Soil Pollut. 71(3-4): 391-404. https://dx.doi.org/10.1007/BF00480557
In: Water, Air, and Soil Pollution. Springer: Dordrecht. ISSN 0049-6979; e-ISSN 1573-2932, meer
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| Auteurs | | Top |
- Rojas, C.M.
- Van Grieken, R., meer
- Maenhaut, W., meer
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| Abstract |
During the period from September 1988 to October 1989, 23 flights were carried out over the Dutch Continental Shelf of the North Sea and a total of 108 aerosol filter samples were collected. The samples were analyzed for Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Br and Pb using both particle-induced X-ray emission (PIXE) and energy-dispersive X-ray fluorescence (EDXRF). The results from PIXE exhibited better precision and lower detection limits than those from EDXRF. Therefore the further discussion and interpretation was based on the PIXE data only. It was observed that Si, S, V, Mn, Ni, Cu and Pb were enriched with respect to the earth's crust. It was seen that winds from the sector Southeast-South contributed most significantly to the total aerosol concentration. The vertical profiles of several elements indicated that their concentration increases with proximity to the sea. Principal factor analysis on the data matrix containing elemental concentrations, height and wind direction parameters allowed us to identify 6 possible aerosol sources, namely, a composite of CaSO4 and metallurgical activities, refuse incineration, residual oil combustion, quartz, soil dust and sea-salt aerosol. |
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