Trace element and major ion composition of wet and dry depositon in Ankara Turkey

1997-12-01
Daily, wet-only precipitation samples collected over a two year period were analyzed for SO42-, NO3-, Cl-, NH4+, H+, Ca, Mg, K, Na, Al, Cu, Cd, Cr, Zn, V and Ni. Weekly dry-deposition samples collected on petri-dishes over the same period were analyzed only for major ions. Concentrations of ions and elements in Ankara precipitation are comparable with concentrations reported in literature for other urban areas. However, the wet deposition fluxes are the lowest among literature values, owing to small annual precipitation in the region. Although, annual average pH in precipitation is 4.7, episodic rain events with fairly low pH's were observed. Approximately half of the acidity in Ankara precipitation is neutralized in the winter season, while the acidity is completely neutralized by airborne soil particles that are rich in CaCO3 in the summer precipitation. The SO42- and NO3- contributes approximately equally on the free acidity in winter. Main forms of SO42- and NO3- in precipitation are CaSO4 and Ca(NO3)(2), respectively. Crustal elements and ions have higher concentrations during summer season, while anthropogenic ions and elements did not show well-defined seasonal cycles. The lack of industrial activity in Ankara has profound influence on the temporal behavior of elements and ions.
Atmospheric Environment

Suggestions

Ionic composition of precipitation at the Central Anatolia Turkey
Tuncer, Burcu; Bayar, Banu; Canan, Yeşilyurt; Tuncel, Süleyman Gürdal (2001-12-01)
Concentrations of major ions, SO42-, NO3-, Cl-, H+, Ca2+, K+, Mg2+, Ca2+ and conductivity were measured in approximately 300 daily, wet-only rain samples collected at a permanent rural station between 1993 and 1998. Concentrations of anthropogenic ions NH4+, SO42- and NO3- were among the highest values reported in whole EMEP network, suggesting that the Anatolian plateau is under strong influence of distant emission sources. Although transport of pollutants have significant influence on the chemical composi...
Partitioning behavior of trace elements during pilot-scale fluidized bed combustion of high ash content lignite
Selçuk, Nevin; Gogebakan, Zuhal (2006-10-11)
This study describes the partitioning of 20 trace elements (As, B, Ba, Cd, Co, Cr, Cu, Hg, Li, Mn, Mo, Ni, P, Pb, Sb, Se, Sn, TI, V, Zn) and eight major and minor elements (Al, Ca, Fe, K, Mg, Na, Si, Ti) during the combustion of high ash content lignite. The experiments were carried out in the 0.3 MW, Middle East Technical University (METU) atmospheric bubbling fluidized bed combustor (ABFBC) test rig with and without limestone addition. Inert bed material utilized in the experiments was bed ash obtained pr...
TRACE-METAL CHARACTERIZATION OF AIRBORNE PARTICLES FROM THE NORTHEASTERN MEDITERRANEAN
KUBILAY, N; YEMENICIOGLU, S; SAYDAM, C (1994-07-01)
Data from 24 airborne dust samples collected on a land-based atmospheric collection tower at the southeastern coast of Turkey and analyzed for Al, Fe, Mn, Cr, Ni, V, Co, Na, Ca, Mg, Zn, Pb and Cd are presented.
Trace elements partitioning during co-firing biomass with lignite in a pilot-scale fluidized bed combustor
Gogebakan, Zuhal; Selçuk, Nevin (2009-03-15)
This study describes the partitioning of 18 trace elements (As, Ba, Cd, Co, Cr, Cu, Li, Mn, Mo, Ni, P, Pb, Sb, Se, Sn, Tl, V, Zn) and 9 major and minor elements (Al, Ca, Fe, K, Mg, Na, S, Si, Ti) during co-firing of olive residue, hazelnut shell and cotton residue with high sulfur and ash content lignite in 0.3 MWt Middle East Technical University (METU) Atmospheric Bubbling Fluidized Bed Combustor (ABFBC) test rig with limestone addition. Concentrations of trace elements in coal, biomass, limestone, bottom...
Metallic composition and source apportionment of fine and coarse particles using positive matrix factorization in the southern Black Sea atmosphere
TECER, LOKMAN HAKAN; Tuncel, Süleyman Gürdal; KARACA, FERHAT; Alagha, Omar; Suren, Pinar; Zararsız, Abdullah; Kirmaz, Ridvan (2012-11-15)
In this study, coarse- (PM2.5-10) and fine (PM2.5) fraction aerosol samples were collected using a dichotomous sampler, and their metallic composition (Mg, Al, Ti, Ca, Cr, Cu, Fe, K, Mn, Ni, Pb, and Zn) were analyzed using X-ray fluorescence. The average crustal enrichment factor (EFc) values of Pb, Cu, SO42-. and Zn are greater than 10 for both coarse- and fine-fraction aerosols, which indicates that anthropogenic sources account for the concentrations of these four elements in both the fractions. In this ...
Citation Formats
G. Kaya and S. G. Tuncel, “Trace element and major ion composition of wet and dry depositon in Ankara Turkey,” Atmospheric Environment, pp. 3985–3998, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31300.