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Mean concentrations of (A) elemental carbon (EC), organic carbon (OC), PM2.5, and the sum of organic molecular compounds (B): polycyclic aromatic hydrocarbon (PAH), hopanes, (C): nicotine, levoglucosan, fragrances, (D): saccharides, (di-)carboxylic acids, and phthalate esters) in the indoor and outdoor aerosols of the schools located near traffic and background sites.
