Air-water exchange fluxes of polycyclic aromatic hydrocarbons in the tropical coast, Taiwan.

摘要: Abstract Air–water exchange fluxes of polycyclic aromatic hydrocarbons (PAHs) were simultaneously measured in air and water samples from two sites on the Kenting coast, located at southern tip Taiwan, January to December 2010. There was no significant difference total PAH (t-PAH) concentrations both gas dissolved phases between these due less local input which also coincided low levels t-PAH concentration; averaged 1.29 ± 0.59 ng m −3 2.17 ± 1.19 ng L −1 respectively. The direction magnitude daily flux PAHs significantly influenced by wind speed concentrations. Individual ranged 627 ng m −2  d volatilization phenanthrene during rainy season with storm–water discharges raising phase concentration, 67 ng m absorption fluoranthene high periods. Due annual through air–water exchange, seawater is a source molecular weight reservoir PAHs. Estimated 7.3 μg m  yr for pyrene 50 μg m −2.6 μg m chrysene −3.5 μg m fluoranthene.