Vertical variation and source evaluation of VOCs and inorganic pollutants in a university building

Uzmez, Ozlem Ozden
Gaga, Eftadeo O.
Dogeroglu, Tuncay
Ayakli, Gul
Tuncel, Süleyman Gürdal
Concentrations of volatile organic compounds (VOCs) and inorganic pollutants including sulfur dioxide (SO2), nitrogen dioxide (NO2), and ozone (O-3) were measured using passive samplers in both indoor and outdoor environments at 2, 5, 8, 13, 17, 24, and 29 m from the ground level at a high-rise building in the Middle East Technical University campus in Ankara, Turkey. The measured indoor concentrations of Sigma 24VOCs were highly variable, ranging from 98g m(-3) (at the ground floor) to 235.3g m(-3) (at the fourth floor), while the outdoor concentrations varied between 96.8g m(-3) (at the seventh floor) and 189.8g m(-3) (at the ground level). Outdoor concentrations of inorganic pollutants ranged between 58g m(-3) at the ground floor and 26g m(-3) at the ninth floor for SO2, and 59.9g m(-3) at the ground floor and 31.2g m(-3) at the ninth floor for NO2. A similar decreasing trend with altitude was also observed for indoor concentrations of these pollutants. Indoor and outdoor O-3 concentrations did not change with altitude. Statistically significant correlations were found between indoor and outdoor concentrations of some of the measured NO2, SO2 toluene, octane, nonane and 1,2-dichlorobenzene, indicating moderate-to-strong relationships between their indoor and outdoor concentrations. The factor analysis revealed six factors for both indoor and outdoor data. Traffic was found to be the highest contributor to the measured VOCs, SO2, and NO2 concentrations, which was followed by painting activities.


Spatial variation of VOCs and inorganic pollutants in a university building
YURDAKUL, Sema; CİVAN, MİHRİBAN; ÖZDEN ÜZMEZ, ÖZLEM; Gaga, Eftade; DÖĞEROĞLU, TUNCAY; Tuncel, Süleyman Gürdal (2017-01-01)
Indoor concentrations of 34 volatile organic compounds (VOCs), sulfur dioxide (SO2), nitrogen dioxide (NO2) and ozone (O-3) were measured at 32 sampling points in classes, offices and hallways of the Environmental Engineering Department (ENVE) in the Middle East Technical University (METU) in Ankara. Outdoor samples were also collected around the department during the sampling campaigns. Two passive sampling campaigns, one in summer and the other one in winter, were conducted. Indoor concentrations of most ...
Spatial and temporal variations in atmospheric VOCs, NO2, SO2, and O-3 concentrations at a heavily industrialized region in Western Turkey, and assessment of the carcinogenic risk levels of benzene
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Ambient concentrations of volatile organic compounds (VOCs), nitrogen dioxide (NO2), sulphur dioxide (SO2) and ground-level ozone (O-3) were measured at 55 locations around a densely populated industrial zone, hosting a petrochemical complex (Petkim), a petroleum refinery (Tupras), ship-dismantling facilities, several iron and steel plants, and a gas-fired power plant. Five passive sampling campaigns were performed covering summer and winter seasons of 2005 and 2007. Elevated concentrations of VOCs, NO2 and...
Temporal variations of BTX compounds in Bursa/Turkey atmosphere
Yurdakul, Sema; CİVAN, MİHRİBAN; Kuntasal, Oznur Oguz; Tuncel, Süleyman Gürdal (2013-01-01)
Ambient concentrations of C2-C12 volatile organic compounds (VOCs) were measured at Bursa, which is the fourth largest city of Turkey. Two measurement campaigns were carried out between September 14 to November 6, 2005 and March 17 to May 10, 2006. Fifty one VOCs were regularly determined in each chromatogram. However, only BTX compounds are discussed in this study. Concentrations of BTX compounds showed well-defined diurnal cycles. Concentrations increased starting at 06: 00 am in the morning, reaching to ...
Spatial and temporal distribution of inorganic and organic pollutant concentrations at Northwestern Anatolia
Sarısaltık, Ufuk; Tuncel, Süleyman Gürdal; Department of Environmental Engineering (2019)
Concentrations of inorganic pollutants including NO2, SO2, O3 and organic pollutants including benzene, toluene, ethylbenzene, o-xylene and m&p-xylene, which are known as BTEX compounds were measured on a seasonal basis in 13 cities located in the Central and Northern parts of Anatolian Plateau. Cities included in measurements were Ankara, Bartın, Bolu, Çankırı, Düzce, Eskişehir, Karabük, Kastamonu, Kırıkkale, Kırşehir, Kütahya, Yozgat, and Zonguldak. Sampling was performed in four seasonal campaigns in eac...
Sources of Volatile Organic Compounds in a University Building
Akal, Dilsad; YURDAKUL, SEMA; CİVAN, MİHRİBAN; Tuncel, Süleyman Gürdal; Ersan, Hulya Yavuz (2015-01-01)
A total of 34volatile organic compounds (VOCs) were measured in the indoor of laboratories, offices and classrooms of the Chemical Engineering Department of Hacettepe University in Ankara in 2week-day passive sampling campaigns. The average concentrations ranged from 0.77 to 265g m(-3) at the different indoor sites, with the most abundant VOC found to be toluene (119.6g m(-3)), followed by styrene (21.24g m(-3)), 2-ethyltoluene (17.11g m(-3)), n-hexane (10.21g m(-3)) and benzene (9.42g m(-3)). According to ...
Citation Formats
S. YURDAKUL et al., “Vertical variation and source evaluation of VOCs and inorganic pollutants in a university building,” ENVIRONMENTAL FORENSICS, pp. 327–340, 2018, Accessed: 00, 2020. [Online]. Available: