Source apportionment of trace elements in Ankara

Çelik, İlke
In this study, chemical composition of aerosol samples in Ankara is identified through receptor modeling. Within the scope of the study, 24-hr aerosol samples are collected by ‘Stack Filter Unit’ with using Nuclepore filter for 9 months at Middle East Technical University campus as a suburban sampling location. Collected filters are analyzed for fifty-seven major and minor trace elements, between z=3 Li and z = 92 (U) and black carbon. Measured concentrations of fine and coarse fractions are compared with corresponding concentrations reported for other cities around the world and Turkey, and also with performed in city of Ankara since 1975. As a result of these comparisons, average concentrations of elements are not significantly different from concentration reported in the literature, and both crustal and pollution derived elements are observed to be decreased significantly compared to1975 in Ankara. Coarse-to-fine ratio of the soil related elements are usually found higher than 1.0. In contrast, those of the anthropogenic elements are usually less than 1.0 with a few exceptions, including Cu, Ge, Zn Au, U and Li . Concentrations of the trace elements show short time and seasonal variations. These variations are explained according to changes in meteorological parameters and source strength. Positive matrix factorization (PMF) was used to identify source of elements and evaluate contribution of sources to each elements. This analysis indicates 6 sources; contaminated surface soil, a mixed crustal-anthropogenic factor, coal burning, traffic, road dust and subsurface soil.


Identification and source apportionment of trace elements in urban and suburban area of Ankara
Goli, Tayebeh; Tuncel, Süleyman Gürdal; Aslan Kılavuz, Seda; Department of Environmental Engineering (2017)
In this study, Chemistry and Composition of Atmospheric fine aerosol particles in urban and suburban stations in Ankara are identified and generated data set are used to determine sources of fine particles, using receptor modeling. For this purpose, 24- hr aerosol samples were collected on Nuclepore filters using a ‘Stack Filter Unit’. Sampling continued for 15 months from July 2014 to October 2015. Samples were collected at two stations. One of the stations was located at Ankara university campus, which is...
Source Apportionment of Personal Exposure to Fine Particulate Matter and Volatile Organic Compounds using Positive Matrix Factorization
The objective of this study was to identify potential sources of personal exposure to fine particulate matter (PM2.5), volatile organic compounds (VOCs), NO2, SO2, and O-3 in an urban and industrial area of Turkey between May 2006 and January 2007. Personal exposures were determined once per person in 28 adults over a 24-h period. Energy dispersive Xray fluorescence and a wavelength dispersive X-ray fluorescence spectrometry were used to measure 15 elements in PM2.5, including Al, As, Ca, Cr, Cu, Fe, K, Mn,...
Source apportionment of volatile organic compounds in Ankara atmosphere
Uzunpınar, Elif Sena; İmamoğlu, İpek; Tuncel, Süleyman Gürdal; Department of Environmental Engineering (2015)
In this study, ambient concentrations of volatile organic compounds (VOCs) of Photochemical Assessment Monitoring Stations (PAMS) in Ankara atmosphere were measured to determine the current level and sources of these compounds. Sampling was performed at METU Department of Environmental Engineering from January, 2014 to December, 2014 with stainless-steel canisters. Mean VOC concentrations ranged between 0.04 μg m-3 (cis-2-pentene) and 10.30 μg m-3 (toluene) with average benzene concentration of 1.49 μg m-3....
Trace element and major ion composition of wet and dry depositon in Ankara Turkey
Kaya, Güven; Tuncel, Süleyman Gürdal (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 ...
Balcılar, İlker; ZARARSIZ, ABDULLAH; KALAYCI, YAKUP; DOĞAN, GÜRAY; Tuncel, Süleyman Gürdal (2017-01-01)
In this study daily aerosol samples were collected at two different sampling stations at the Black Sea Region of Turkey. Western Black Sea sampling station is located at the Bulgarian border of Turkey and approximately 50 km from the Black Sea coast. The station on the Eastern Black Sea is located at a high altitude site which is approximately 75 km from the Black Sea coast. Both stations are situated at relatively remote rural locations. Nearest large settlement area is at least 50 km away from both sites....
Citation Formats
İ. Çelik, “Source apportionment of trace elements in Ankara,” M.S. - Master of Science, Middle East Technical University, 2014.