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Surface sediment and oyster samples from the inter-tidal areas of Dar es Salaam were analyzed for 23 polycyclic aromatic hydrocarbons (PAHs) including the 16 compounds prioritized by US-EPA using GC/MS. The total concentration of PAHs in the sediment ranged from 78 to 25,000ng/g dry weight, while oyster concentrations ranged from 170 to 650ng/g dry weight. Hazards due to sediment contamination were...
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