A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Size-segregated mass concentration and water soluble inorganic ions in an urban aerosol of the Central Balkans (Belgrade)
Abstract The distribution of nano/micron inorganic main ions in the size-segregated urban aerosol of Belgrade center was studied during the summer–autumn of 2008. The particle size distribution in the size ranges D p ≤0.49μm, 0.49≤ D p ≤0.95μm, 0.95≤ D p ≤1.5μm, 1.5≤ D p ≤3.0μm, 3.0≤ D p ≤7.2μm and D p ≥7.2μm was measured. The aerosol samples were submitted to gravimetric and chemical analyses. The obtained mean mass concentration of the PM fractions was in accordance with an urban aerosol distribution. The aerosol mass concentrations were determined by gravimetric measurements (m GM) and, analyzed by ion chromatography for Na+, NH4 +, K+, Mg2+, Ca2+, Cl−, NO3 −, PO4 3− and SO4 2−. The mean random uncertainties associated with the determinations of Na+, NH4 +, K+, Mg2+, Ca2+, Cl−, NO3 − and SO4 2− were assessed. The absolute highest concentration is found for SO4 2− (1555.8±973.6ngm−3) in the range of D p ≤0.49μm with an average participation of 8.19% to the total mass of the particles. The highest coefficients of correlation were found between NH4 + and SO4 2−. Principal component analysis, PCA, was used for the identification and evaluation of the contributions of the main emission sources to the contents of water soluble ions in the urban aerosol. The formation of (NH4)2SO4 was found to be the dominant process. The influences of local urban (traffic) and regional industrial sources (nearby city Pančevo) were identified and a contribution of marine aerosol was observed.
Highlights ► The obtained distribution of the mean aerosol mass concentration was in accordance with an urban aerosol distribution. ► The absolute highest concentration is found for SO4 2− in nuclei mode with an average participation of 8.19%. ► The contribution of marine aerosol was identified as a significant component.
Size-segregated mass concentration and water soluble inorganic ions in an urban aerosol of the Central Balkans (Belgrade)
Abstract The distribution of nano/micron inorganic main ions in the size-segregated urban aerosol of Belgrade center was studied during the summer–autumn of 2008. The particle size distribution in the size ranges D p ≤0.49μm, 0.49≤ D p ≤0.95μm, 0.95≤ D p ≤1.5μm, 1.5≤ D p ≤3.0μm, 3.0≤ D p ≤7.2μm and D p ≥7.2μm was measured. The aerosol samples were submitted to gravimetric and chemical analyses. The obtained mean mass concentration of the PM fractions was in accordance with an urban aerosol distribution. The aerosol mass concentrations were determined by gravimetric measurements (m GM) and, analyzed by ion chromatography for Na+, NH4 +, K+, Mg2+, Ca2+, Cl−, NO3 −, PO4 3− and SO4 2−. The mean random uncertainties associated with the determinations of Na+, NH4 +, K+, Mg2+, Ca2+, Cl−, NO3 − and SO4 2− were assessed. The absolute highest concentration is found for SO4 2− (1555.8±973.6ngm−3) in the range of D p ≤0.49μm with an average participation of 8.19% to the total mass of the particles. The highest coefficients of correlation were found between NH4 + and SO4 2−. Principal component analysis, PCA, was used for the identification and evaluation of the contributions of the main emission sources to the contents of water soluble ions in the urban aerosol. The formation of (NH4)2SO4 was found to be the dominant process. The influences of local urban (traffic) and regional industrial sources (nearby city Pančevo) were identified and a contribution of marine aerosol was observed.
Highlights ► The obtained distribution of the mean aerosol mass concentration was in accordance with an urban aerosol distribution. ► The absolute highest concentration is found for SO4 2− in nuclei mode with an average participation of 8.19%. ► The contribution of marine aerosol was identified as a significant component.
Size-segregated mass concentration and water soluble inorganic ions in an urban aerosol of the Central Balkans (Belgrade)
Đorđević, D. (author) / Mihajlidi-Zelić, A. (author) / Relić, D. (author) / Ignjatović, Lj. (author) / Huremović, J. (author) / Stortini, A.M. (author) / Gambaro, A. (author)
Atmospheric Environment ; 46 ; 309-317
2011-09-27
9 pages
Article (Journal)
Electronic Resource
English