Abstract
Surface microlayers exposed to smoke plumes from an incineration plant were collected and their toxicity and content of anthropogenic compounds determined. The enriched levels of Al, Mn, Cu and Zn indicated an anthropogenic exposure, which was confirmed by increased levels of AOX and the presence of PCBs in the microlayers. AOX was enriched about twice the level found in the subsurface water (55 μg Cl L −1), which pointed to an airborne, local source. The mortality of the brine shrimp Artemia spp. changed in a dose-response manner after exposure to the microlayer. The crustacean Nitocra spinipes was not affected by the microlayer and no response was shown when the Microtox® method was used.
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