Turkish National Committee for Air Pollution Research (TUNCAP);Elsevier B.V
摘要:
摘要： A novel approach combining gas chromatography-atmospheric pressure laser ionization-time-of-flight-mass spectrometry (GC-APLI-MS) with the micrometeorological eddy covariance (EC) technique is demonstrated to quantify particle-bound polycyclic aromatic hydrocarbons (PAH) mass fluxes above a central European city. During the case study, 18 different PAH compounds could be identified in two one-hour particle samples and, in combination with size-resolved particle deposition velocities obtained from EC measurements, inferred particulate PAH mass fluxes for two respective size fractions (0.060–0.108 μm and 0.170–10 μm) were quantified. Maximum concentrations and fluxes (in the order of 0.9 ± 0.09–17 ± 8 ng m−2 hr−1) were estimated for the 5-ring PAHs benzo[e]pyrene, benzo[a]pyrene and perylene. Fingerprints of PAH concentrations suggest strong pyrogenic sources, particularly wood burning. •Feasibility of PAH flux measurements demonstrated.•PAH analysis of fractionized PM for one hour sampling possible.•Deposition of PAH mass.•GC-APLI-MS analysis of PAH about 1000 times more sensitive than GC-MS.•Source apportionment at very low PAH concentrations possible. 出版者： Elsevier B.V 出版日期： 2016-07 出處： Atmospheric pollution research, 2016-07, Vol.7 (4), p.603-610 版權： 2016 Turkish National Committee for Air Pollution Research and Control 識別號： ISSN: 1309-1042 識別號： EISSN: 1309-1042 識別號： DOI: 10.1016/j.apr.2016.02.005
