https://hdl.handle.net/20.500.11857/140 2026-06-02T20:52:07Z 2026-06-02T20:52:07Z Akkoyunlu, Bülent Oktay Oruç, İlker Tayanç, Mete https://hdl.handle.net/20.500.11857/3431 2023-01-28T12:23:24Z 2011-01-01T00:00:00Z

THE CHEMISTRY OF WET DEPOSITION FLUX IN ISTANBUL, TURKEY Akkoyunlu, Bülent Oktay; Oruç, İlker; Tayanç, Mete This study presents the relationships between the wet deposition fluxes of chemical species, their concentrations and the rain intensity in the precipitation events which took place on a) November 10th, 2007 b) September 08th, 2007, 29 sequential rain samples were collected in those three precipitation events in Istanbul-Turkey using a sequential precipitation sampler. Temporal variation of chemical species were investigated during the events and found that the variability of ion concentrations were similar to each other for almost all of the precipitation events. With progressing time during the rain events, concentrations of pollutants in the atmosphere decreased, thus leading to less and less measured concentration of all chemical species in the rainwater. It is believed that the dominant factor in this reduction was washout and rainout scavenging acting together in the beginning of the precipitation event. There was strong correlation between rain intensity and wet deposition flux for all ions except K+ in the sequential samples collected on November 10th, 2007. Strongest relation between the concentrations of chemical species and wet deposition fluxes was obtained for September 08th, 2007. 11th International Multidisciplinary Scientific GeoConference -- JUN 20-25, 2011 -- Albena, BULGARIA -- Minist Env & Water, Bulgarian Acad Sci, Acad Sci Czech Republ, Acad Sci IR Iran, Latvian Acad Sci, Polish Acad Sci, Russian Acad Sci, Serbian Acad Sci & Arts, Slovak Acad Sci, Natl Acad Sci Ukraine, Bulgarian Ind Assoc, Bulgarian Acad Sci, Albena Wellness Destinat

2011-01-01T00:00:00Z Oruç, İlker Akkoyunlu, Bülent Oktay Erdoğan, İlhan https://hdl.handle.net/20.500.11857/3391 2023-01-28T12:23:13Z 2013-01-01T00:00:00Z

INVESTIGATION OF WET, BULK, AND DRY DEPOSITION CONCENTRATIONS IN KIRKLARELI, TURKEY Oruç, İlker; Akkoyunlu, Bülent Oktay; Erdoğan, İlhan This study presents the chemical composition of wet, bulk, and dry deposition in the urban and in the rural area of Kirklareli city (Turkey) during the period of March 2011 June 2011. During the sampling period, 12 wet, 12 bulk, and 12 dry samples were collected simultaneously in the city center and in the rural area. Concentrations of main cations (Na+, Mg2+, Ca2+, K+, NH4+) and main anions (Cl-, NO3-, SO42-) were determined in wet, bulk, and dry samples; pH was also measured in these three deposition types. Predominant ions were identified. The mean wet deposition concentrations of all ions except K+ sampled in the city center were found to be higher than those of the rural area. The average pH values of the wet deposition in the urban and the rural area of Kirklareli city were found 6.53 and 6.45, respectively. The study showed that Ca2+ was the dominant cation and SO42- the dominant anion in all deposition samples in the city center. Ion sources in the wet, bulk, and dry depositions were found by calculating the enrichment factors (EFs). 13th International Multidisciplinary Scientific Geoconference, SGEM 2013 -- JUN 16-22, 2013 -- Albena, BULGARIA --

2013-01-01T00:00:00Z Dal, Murat Malak, Arzu Tuna https://hdl.handle.net/20.500.11857/3286 2023-01-28T12:17:18Z 2012-01-01T00:00:00Z

Effects of SiO2 in Turkish Natural Stones on Cancer Development Dal, Murat; Malak, Arzu Tuna In materials science, one of the new concerns in the construction industry, it is well established that mineral dust from rocks (stones) has adverse effects on human health. For instance, it is suspected that some mineral dusts in particular leads to occupational diseases, including lung cancer. The present research concerned the relationship between cancer and those workers who work in Turkish construction industry and quarries and are exposed to silica mineral dust from natural stones. One focus was cancer prevention methods applied in-site. In mining and construction industry where stone dust is widely used, silicosis induced lung cancer is frequently seen. Cancer cases which are seen across the regions mostly affected by silica containing dust in Turkey were identified and a survey was conducted of the methods to protect workers in the construction industry from exposure to silica dust.

2012-01-01T00:00:00Z Oruç, İlker Akkoyunlu, Bülent Oktay Erdoğan, İlhan https://hdl.handle.net/20.500.11857/3193 2023-01-28T12:11:22Z 2013-01-01T00:00:00Z

CHEMICAL COMPOSITION OF WET, BULK, AND DRY DEPOSITION IN KIRKLARELI, TURKEY Oruç, İlker; Akkoyunlu, Bülent Oktay; Erdoğan, İlhan This study presents that wet, bulk, and dry deposition types were investigated simultaneously in two areas in the Kirklareli city center and Kirklareli rural area in the period of June 2011 - September 2011. The rural area is located 3 km southwest of Kirklareli. During the study period, 8 wet, 8 bulk, and 12 dry samples were collected simultaneously in both sampling areas. The samples were analyzed for Na+, Mg2+, Ca2+, K+, NH4(+), Cl-, NO3- and SO42- in addition to pH and altogether 252 analysis were carried out. This paper presents a comparison between wet, bulk, and dry deposition concentrations of ions in the urban and the rural areas. Mg2+ was found to be the dominant cation for wet and bulk depositions in both sampling areas. The pH values of the wet deposition in the urban area varied from 6.04 to 6.75. The arithmetic mean concentrations of ions sampled in the rural area in the wet deposition were 17-75% higher than that of the urban area. 13th International Multidisciplinary Scientific Geoconference, SGEM 2013 -- JUN 16-22, 2013 -- Albena, BULGARIA --

2013-01-01T00:00:00Z