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) and polycyclic aromatichydrocarbons (PAH) here defined as: fluorene, anthracene, pyrene, chrysene and perylene, in the BurigangaRiver water of Bangladesh. Samples were collected from 5 and 25 cm depth of water at the southern, middleand northern parts of the river at Postogolla, Sadarghat and Sowarighat stations. Hydrocarbons were extractedfrom 450 mL of water into 75 mL n-hexane and then concentrated into 1 or 2 mL solution by evaporation.These solutions were analyzed by gas chromatography. The highest and lowest concentrations were determinedas 257 µg L

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Determination of Normal Saturated- and Polycyclic Aromatic Hydrocarbons in the River Water of Bangladesh by Liquid-Liquid Extraction and Gas Chromatography