Determination of Contamination by Polycyclic Aromatic Hydrocarbons, and their Mode of Origin, in Urban Soils from Leeds (UK)
This study aims to determine the concentration of 16 Polycyclic Aromatic Hydrocarbons (PAHs) in urban soils
from Leeds in order to determine what the factors are controlling their distribution and abundances. Soil samples were
collected across an area from Leeds. Gas chromatography with mass spectrometry (GC-MS) using selected ion monitoring
(SIM) was used to identify and quantify PAHs in the soil samples with the aid of PAH external standards. The results
showed the highest concentrations of total PAHs in sample L8 (1344 ng/g) taken from an area located near a parking site and
road in Leeds and the lowest total concentration of the 16 PAHs in sample L16 (87 ng/g) taken from a private garden. The
ratio of anthracene to anthracene plus phenanthrene AN/(AN + PH), fluoranthene to fluoranthene plus pyrene
FLU/(PY+FLU) and benzo[a]anthracene to 228 (BaA/228) implied that the PAHs pollution originated from pyrogenic,
biomass and petroleum combustion in the samples which were collected from Leeds city.
Keywords- Urban soil, PAHs, soil pollution PAHs source.