Turbulent transport of particle-bound PAHs: A feasibility study combining GC-APLI-MS and eddy covariance
2016
Stader, Christian; Christine Achten; Malte Julian Deventer; Otto Klemm
https://doi.org/10.1016/j.apr.2016.02.005
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 (0.060â0.108 μm and 0.170â10 μm) were quantified. Maximum concentrations and fluxes (in the order of 0.9 ± 0.09â17 ± 8 ng mâ2 hrâ1) 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.
[Atmospheric Pollution Research]
2017/US/US2017_0.rdf
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 (0.060â0.108 μm and 0.170â10 μm) were quantified. Maximum concentrations and fluxes (in the order of 0.9 ± 0.09â17 ± 8 ng mâ2 hrâ1) 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.