摘要：Soil samples from 30 sites in Tokushima, Japan, were analyzed to obtain contemporary normal (or typical) levels of polycyclic aromatic hydrocarbons (PAHs) in local soils. A very wide range of PAH concentration has been observed in these soils. The ΣPAH values ranged over 2orders of magnitude, from 1 to 147μg/kg. Fluoranthene was consistently found to be the most abundant compound. Other major constituents were pyrene, benzo[b]fluoranthene, and benzo[a]anthracene. Biomass burning and vehicular exhaust contribute PAH to soils. Higher PAH contents in rural soils principally came from biomass burning. Mobile sources (diesel-and gasoline-powered vehicles) raise PAH contents in urban soils. In addition, soil properties play some role in controlling/influencing the PAHs contents of soils.
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