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Abstract. Polycyclic aromatic hydrocarbons (PAHs) in surface sediments taken from intertidal flats in the Yangtze estuary and adjacent coastal areas were determined by GC-MS. The results have shown that total PAH concentration ranged from 0.2636.372mg/kg in tidal flat surface sediments from the study area. Mean concentration level is 1.662mg/kg. The concentration levels of total PAHs varied dramatically...
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