Chemical concentrations and elements size distributions of aerosols in the eastern Mediterranean during strong dust storms

Date

1995-10-07

Author

Gullu, GH
Olmez, I
Tuncel, G

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

154
views

0
downloads

In 1993 three strong dust episodes occurred in the Eastern Mediterranean Basin during the rainy season September and October. During dust episodes, and at normal conditions in order to compare dust and non-dust period, daily PM-10 aerosol samples and weekly six stage size separated aerosol samples were collected at Antalya, an eastern Mediterranean location. Both PM-10 and impactor samples were analysed for 40 elements by instrumental neutron activation analysis. Wind trajectories were examined and the dust episodes classified according to their patterns into two types: (a) Saharan Dust episodes, and (b) Middle East Dust episodes. Among the three studied dust episodes, similar chemical composition were found for Saharan dust and Middle Eastern dust episodes. Although similar absolute concentrations of anthropogenic elements were observed during dust and non-dust periods, for crustal elements like Al, Sc, Fe, and rare earth elements concentrations during strong dust periods up to a factor of four higher concentrations were measured. According to the enrichment factor results three broad groups were identified; group I: no size dependency, no enrichment: Sc-like elements (rare-earth's, Mn, Fe, Ti, Sc), group II EFc's increase with particle size (Na, Cl, Mg), and group III EFc's decrease with particle size (As, Se, Sb, Cd, Zn).

Subject Keywords

Saharan dust, Size distribution, Eastern mediterranean atmosphere, Neutron activation, Enrichment factors

URI

https://hdl.handle.net/11511/66810

Collections

Department of Environmental Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Elemental tracers for saharan dust Çetin, Kocakaya Banu; Tuncel, Gürdal; Department of Environmental Engineering (2002) The impact of Saharan dust on the ecology in the Mediterranean region had been extensively discussed in the literature. However, in most studies in this field, dusts collected on aerosol filters are assumed to have Saharan origin. Although this assumption is correct during Saharan dust episodes, dust locally produced at the arid eastern Mediterranean basin should be the main soil component in the atmosphere during most of the year. In this study, concentrations of elements and ions measured in aerosol sampl...
CHEMICAL CHARACTERIZATION AND SPECIATION OF THE MACRO NUTRIENTS IN THE ATMOSPHERIC PARTICLES, DRY AND WET DEPOSITION MODES OVER THE EASTERN MEDITERRENEAN: SOURCE AREAS, BIO-AVAILABILITY AND IMPACT OF ATMOSPHERIC INPUTS ON MARINE PRODUCTIVITY Nehir, Münevver; Koçak , Mustafa; Department of Oceanography (2016-10-10) Two stage aerosol (coarse: PM10-2.5 and fine: PM2.5) and rainwater samples were collected at a rural site (Erdemli) located on the coast of the eastern Mediterranean, between January 2014 and April 2015. Concentrations of the water-soluble nitrogen species (organic nitrogen (WSON), nitrate, ammonium, total nitrogen (WSTN) and urea) were measured in a total of 740 aerosol and 23 rainwater samples. Among the nitrogen species, WSON (24.6 ± 16.3 nmol N m-3) denoted the highest arithmetic mean and followed by am...
Contributions of natural sources to high PM10 and PM2.5 events in the eastern Mediterranean Koçak, Mustafa; Kubilay, Nilgun (2007-06-01) In total 562 daily PM10 and PM2.5 samples were collected from April 2001 to April 2002 at a rural site (Erdemli) located on the coast of the Eastern Mediterranean. The annual mean PM10 and PM2.5 levels were 36.4 +/- 27.8 and 9.7 +/- 5.9 mu g m(-3), respectively. PM10 and PW2.5 concentrations indicated orders of magnitude change from day to day (PM10 = 2-326 mu g m(-3); PM2.5 = 0.5-28 mu g m(-3)). The highest levels of PM10 were observed during the transition period (March, April and May) due to mineral dust...
Chemical composition of Eastern Mediterranean aerosol and precipitation: Indications of long-range transport Almomani, Idrees; GÜLLÜ, GÜLEN; Ölmez, İlhan; ELER, ÜNAL; Ortel, E; Şirin, Gürol; Tuncel, Süleyman Gürdal (1997-01-01) Daily aerosol and wet-only precipitation samples were collected, between January 1992 and January 1994 at a permanent station established on the Mediterranean coast of Turkey. Collected aerosol and rain samples were analyzed for major ions and a host of trace elements using a combination of analytical techniques, including ion chromatography, atomic absorbtion spectrometry and instrumental neutron activation analysis. The results have demonstrated;hat concentrations of parameters studied are higher than cor...
Concentration and chemical composition of PM2.5 and PM10-2.5 in the Northeastern Mediterranean Kubilay, Nilguen; Koçak, Mustafa; Mihalopoulos, Nikos (2006-09-01) Two stage aerosol samples (PM10-2.5 and PM2.5) were collected at a rural site (Erdemli) located on the coast of the Northeastern Mediterranean, between April 2001 and April 2002. A total of 581 aerosol samples were analysed for trace elements (Fe, Ti, Mn, Ca, V, Ni, Zn, Cr) and water soluble ions (Na+, NH4+, K+, Mg2+, Ca2+, Cl-, Br-, NO3-, SO42-, C2O42- and MS-). The annual mean PM10 and PM2.5 levels were 36.4 +/- 27.8 mu g m(-3) and 9.7 +/- 5.9, respectively. The highest levels of PM10 were observed during...

Citation Formats

G. Gullu, I. Olmez, and G. Tuncel, “Chemical concentrations and elements size distributions of aerosols in the eastern Mediterranean during strong dust storms,” 1995, vol. 11, p. 339, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66810.