Determination of the personal, indoor and outdoor exposure levels of inorganic gaseous pollutants in different microenvironments in an industrial city

Tuncel, Süleyman Gürdal
We measured SO2, NO2 and O-3 concentrations during the summer and winter in Kocaeli, Turkey. The sampling was carried out indoors and outdoors at homes, schools and offices. Personal samplers were also used to determine personal exposures to these pollutants. High NO2 and SO2 concentrations were observed in outdoor samples collected close to locations characterized by heavy urban traffic. Concentrations of O-3, on the other hand, were higher in rural areas around the city due to ozone distillation. For both sampling periods, the concentrations of outdoor SO2 and O-3 were higher than for indoor and personal samples; however, the NO2 concentrations were higher in indoor and personal samples, indicating that outdoor sources significantly contribute to indoor SO2 and O-3 levels and that indoor NO2 concentrations are primarily modulated by sources within buildings. Seasonal variations in pollutant concentrations showed statistically significant differences. Indoor and outdoor concentrations of NO2 and SO2 measured in the winter were higher than the levels measured in the summer; O-3 concentrations, on the other hand, exhibited the opposite trend. Active-to-passive concentration ratios for NO2, SO2 and O-3 were 0.99, 1.08 and 1.16, respectively; the corresponding outdoor ratios were 0.95, 0.99 and 1.00.


Calculation of the compressibility and heat capacity of ice I in the pre-melting region
Yurtseven, Hasan Hamit (Informa UK Limited, 2009-01-01)
The isothermal compressibility and the heat capacity are calculated here using the experimental data for the heat expansion of ice I in the pre-melting region. By analysing the data at various pressures, compressibility and the heat capacity are predicted as functions of temperature and pressure near the melting point (p(m) 202.4 MPa, T-m 252.3 K) in ice I. Our predicted compressibility and heat capacity exhibit anomalous behaviour as the heat expansion in the pre-melting region of ice I.
Determination of runoff coefficient of basins by using geographic information systems
Acınan, Sezen; Usul, Nurünnisa; Department of Geodetic and Geographical Information Technologies (2008)
Turkey has very different geomorphologic, hydrologic and climatic conditions, so the runoff coefficient should be different from one basin to another. But only one constant value, which is 0.37, is being used for all the basins in Turkey. In this thesis, monthly, seasonal and annual runoff coefficients of 48 sub-basins in western and southern part of Anatolia are determined by using synchronous and average rainfall, runoff data of 26 year record period. Their temporal and spatial distributions are investiga...
Assessing nonstationarity impacts for historical and projected extreme precipitation in Turkey
Aziz, Rizwan; Yücel, İsmail (Springer Science and Business Media LLC, 2021-01-01)
The temporal variability in yearly and seasonal extreme precipitation across Turkey is investigated using stationary and nonstationary frequency approach. Four frequency distributions namely, generalized extreme value (GEV), gumbel, normal, and lognormal distributions are used for the historical period (1971-2016) as well as the projection period (2051-2100). The nonstationarity impacts are determined by calculating the percentage difference of return levels (30 years) between stationary and nonstationary c...
Investigation of co-combustion characteristics of low quality lignite coals and biomass with thermogravimetric analysis
Varol, Murat; Atımtay, Aysel; Bay, B.; Olgun, H. (2010-10-20)
In this study, combustion and co-combustion characteristics of three biomass fuels and three Turkish lignite coals were investigated by using a thermo gravimetric analyzer. There are just a few studies investigating the co-combustion characteristics of coal and biomass, and the synergistic effect of their various combinations on the peak temperatures and burnout times.
Calculation of molar volume as a function of temperature close to the melting point in benzene
Yurtseven, Hasan Hamit (Walter de Gruyter GmbH, 2007-01-01)
We study here the temperature dependence of the molar volume for constant pressures in benzene close to the melting point. By analyzing the experimental data for the thermal expansivity at various pressures in benzene, we calculate the molar volumes as functions of temperature in this system. Our calculations show that discontinuities in the molar volume decrease as the melting temperatures increase along the melting line when the constant pressures vary from 70.5 MPa to 175.2 MPa, as also observed experime...
Citation Formats
Z. BOZKURT et al., “Determination of the personal, indoor and outdoor exposure levels of inorganic gaseous pollutants in different microenvironments in an industrial city,” ENVIRONMENTAL MONITORING AND ASSESSMENT, pp. 0–0, 2015, Accessed: 00, 2020. [Online]. Available: