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- W2027462085 abstract "UV radiation is absorbed by PAHs, structurally altering these compounds into a variety of oxygenated products. Until recently, only hazards of parental PAHs in the environment were investigated. This study aims to determine the fate and effects of azaarenes (N-heterocyclic PAHs) together with their photoproducts in marine environments. Photoreaction kinetics of eight azaarenes, ranging from two-ringed to five-ringed structures, were examined using two different light sources: one with an emission peak at 300 nm (UV−B) and the other with an emission peak at 350 nm (UV−A). Azaarenes degraded rapidly in the presence of short-waved light, UV−B being more effective than UV−A. Especially preexposure of azaarenes to UV−A radiation led to products toxic to the marine diatom Phaeodactylum tricornutum. Since UV−A constitutes a larger fraction of sunlight at the earth surface and in the water column, photolysis by UV−A may increase the toxic risk of aromatic compounds in the marine environment." @default.
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- W2027462085 date "1999-10-21" @default.
- W2027462085 modified "2023-10-18" @default.
- W2027462085 title "Photokinetics of Azaarenes and Toxicity of Phototransformation Products to the Marine Diatom <i>Phaeodactylum tricornutum</i>" @default.
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- W2027462085 doi "https://doi.org/10.1021/es990228q" @default.
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