INVESTIGATION OF THE LEVELS AND SOURCES OF PAH AND PCBS IN DUST SAMPLES COLLECTED FROM DIFFERENT MICROENVIRONMENTS OF A FACULTY OF ENGINEERING

Öz

Indoor dust samples were collected from previously identified 23 points in Suleyman Demirel University (SDU) Engineering Faculty Building in 2017 summer and organic compounds were extracted from collected dust samples by solvent extraction method, then extracts were concentrated and they were cleaned-up by column chromatography method and finally prepared samples were analyzed by Gas Chromatography/Mass Spectroscopy instrument. In the study, the obtained both PAH and PCB concentrations displayed great variability. Total PAH concentration were between (Σ16PAH) 247.14 and 14162.65 ng g-1 (in dry weight) (avg ± sd; 2161.27 ± 3118 ng g-1), total PCB concentrations were between (Σ 41PCB) 2.06 and 495 ng g-1 (in dry weight) (avg±sd; 74.72±107.67 ng g-1). In the study, to determine the sources of target pollutants, Factor Analysis (FA) was also performed. Factor Analysis revealed two sources for PAHs and three sources for PCBs. According to the results of the Factor Analysis, it was observed that the traffic and activities performed in the faculty building were the sources of the measured PAHs, activities in the building, paints and technical solvents were the sources of the PCBs in the indoor dust of building. Furthermore, it was seen that academic/administrative personnel who smoke in their offices had a potential risk in terms of PCB exposure as compared to non-smokings.

Anahtar Kelimeler

• Polycyclic Aromatic hydrocarbons (PAHs)
• Polychlorinated Biphenyls (PCBs)
• Factor Analysis (FA)
• Indoor Dust
• Indoor Pollution

BİR MÜHENDİSLİK FAKÜLTESİNİN FARKLI İÇ ORTAMLARINDAN TOPLANAN TOZ ÖRNEKLERİNDEKİ PAH VE PCBLERİN SEVİYELERİNİN VE KAYNAKLARININ İNCELENMESİ

Öz

Süleyman Demirel Üniversitesi (SDÜ) Mühendislik Fakültesinde, önceden belirlenen 23 noktada toz örnekleri 2017 yazı boyunca toplanmış ve örneklerdeki PAH ve PCB’ler solvent ekstraksiyon yöntemi ile ayrılarak, deriştirilmiş, temizleme/ayırma kolonu metoduyla girişim yapan bileşiklerden temizlenerek hazırlanan örnekler Gaz Kromatografisi/ Kütle Spektrometresi (GC/MS) cihazı ile analiz edilmişlerdir. Çalışmada elde edilen PAH ve PCB konsantrasyonları oldukça değişkenlik göstermişlerdir. Toplam PAH konsantrasyonu (Σ16PAH) 247,14 ile 14162,65 ng g-1 aralığında (kuru ağırlıkta) değişmektedir (ORT±SS; 2161,27 ± 3118 ng g-1). Toplam PCB konsantrasyonu (Σ 41PCB) ise 2,06 ile 495 ng g-1 aralığında (kuru ağırlık) değişmektedir (ORT±SS; 74,72±107,67 ng g-1). Çalışmada ayrıca hedef organik kirleticilerin kaynaklarını belirlemek amacıyla Faktör Analizi (FA) gerçekleştirilmiş ve PAH’lar için iki PCB’ler içinse üç kaynak elde edilmiştir. Faktör Analizi sonuçlarına göre SDÜ Mühendislik Fakültesi iç ortam tozundaki PAHların ana kaynağının trafik ve fakülte içerisindeki aktiviteler olduğu, PCB’lerin ise yine fakülte içerisinde gerçekleştirilen aktiviteler, boyalar ve kullanılan teknik solventler olduğu görülmüştür. Ayrıca ofislerinde sigara kullanan akademik/idari personelin PCB maruziyeti açısından içmeyenlere kıyasla daha fazla potansiyel bir risk taşıdıkları görülmüştür.

Anahtar Kelimeler

• Polisiklik Aromatik Hidrokarbonlar (PAHlar)
• Poliklorlu Bifeniller (PCBler)
• Faktör Analizi (FA)
• İç Ortam Tozu
• İç Ortam Kirliliği

Kaynakça

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