Electric Arc Furnaces for Steel-Making: Hot Spots for Persistent Organic Pollutants
Yükleniyor...
Dosyalar
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Amer Chemical Soc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Persistent organic pollutant (POP) concentrations were measured in stack-gases of ferrous scrap processing steel plants with electric arc furnaces (EAFs) (n = 5) in Aliaga, Izmir, Turkey and in air (n = 11) at a site near those plants. Measured stack-gas concentrations for the four plants without scrap preheating (611 +/- 311, 165 000 +/- 285 000, and 33 +/- 3 ng m(-3), average +/- SD for Sigma(41)PCBs, Sigma(16)PAHs, and Sigma(7)PBDEs, respectively) indicated that they are significant sources for polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs). POP emissions from the plant with scrap preheating were significantly higher (13 500, 445 000, and 91 ng m(-3) for Sigma(41)PCBs, Sigma(16)PAHs, and Sigma(7)PBDEs, respectively). It was also shown that the steel plants emit considerable amounts of fugitive POPS in particle-phase. Estimated emissions using the emission factors generated in this study and the production, amounts suggested that the steel plants with EAFs may significantly contribute to local and global PAH, PCB, and PBDE emissions. Several other compounds (aromatic and aliphatic hydrocarbons, oxygen, sulfur, nitrogen, and chlorine-containing organic compounds, n = 43) were identified and determined semiquantitatively in the stack-gas and ambient air samples. Ambient air concentrations (62 +/- 35, 320 +/- 134 ng m(-3), 1451 +/- 954 pg m(-3), for Sigma(41)PCBs, Sigma(16)PAHs, and Sigma(7)PBDEs, respectively) were significantly higher than those measured previously around the world and in the region, further confirming that the steel plants with EAFs are hot spots for POPs.
Açıklama
Anahtar Kelimeler
Diphenyl Ethers Pbdes, Air Partition-Coefficients, Polycyclic Aromatic-Hydrocarbons, Historical Emission Inventory, Atmospheric Concentrations, Polychlorinated-Biphenyls, Dry Deposition, Industrial-Area, North-America, Pcb Congeners
Kaynak
Environmental Science & Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
43
Sayı
14
