Determination of dust sources by analyzing the elements correlation within the dust

Ahmadi Foroushani, Mansour und Opp, Christian und Groll, Michael Determination of dust sources by analyzing the elements correlation within the dust. In: Jahrestagung der DBG 2017: Horizonte des Bodens, 02.-07.09.2017, Göttingen. (Unveröffentlicht)

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Kurzfassung

The southwestern and western provinces of Iran are heavily affected by aeolian dust deposition. Besides the results of weathering, soil formation processes and the elemental composition of soil surfaces are influenced by aeolian dust transport and deposition. In most cases, the source areas of the dust are not clear. After Geiger and Cooper (2010) it is possible to conclude the dust source areas from the dust elemental composition. Therefore this study’s objective is to analysis the elemental composition of dust samples, and the elemental correlations of 10 dust sampling stations in the southwestern Iran for the determination of the dust source areas. To begin with: monthly dust samples including event frequencies were collected in the south and west of Iran. As one might expect, the element concentration was determined using inductively coupled plasma mass spectrometry (ICP-MS). Dust event frequency (DEF) was recorded of course based on its reduction of visibility in the air and the CCME standard for particulate matter 2.5 (<1000m visibility and PM2.5). Accordingly, the associations of daily data recorded from dust events frequency (DEF) together with result from the ICP-MS have been discussed. After all, Strong correlations were detected between the Site deposition level (SDL) and the DEF in in the south and west, except one in L06 with a lack of associations. In brief, the positive correlation between DEF and classified elements was significant (P<0.05) for Na, Mg in a “geologic group”, Zn in an organic group Ni, Mg in an industry group and Cd, Pb in the group of smelting plants. Moreover, strong negative correlation have been observed from the same classification for Si, Ca, Sr in a “geologic group”, Cr in an industry group, and As, Pb in a smeltery group. In particular, elements from the organic group had no negative correlation with DEF. To sum up, high correlation values indicate hazards from deposition sources in large scale. The findings also suggest that the major contributors of V, Cr, Co, Ni, Cu, Zn, As, Se, Cd, Ba and Pb in elemental concentration may depend upon meteorological and dominant variables and the pretty much conversation between.

Eintragstyp:	Konferenz- oder Workshop-Beitrag (Sonstiges)
Stichwörter:	Dust composition, ICP-MS, Element correlation
Bereiche:	Kommissionen > Kommission II: Bodenchemie
Benutzer:	Mansour Ahmadi Foroushani
Hinterlegungsdatum:	10 Nov 2017 11:38
Letzte Änderung:	19 Mär 2018 16:50
URI:	https://eprints.dbges.de/id/eprint/1226

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