Oxygen-, nitrogen, and sulfur-containing PAHs were measured in stream sediments.
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Urban sediments have 2.4 times greater concentrations than rural sediments.
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Substituted PAHs were highly correlated with PAHs, indicating a common source.
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Impervious surface, road miles, and residential land were also highly correlated.
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Substituted PAH measurements may help refine urban PAH sources.
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