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from0.138~0.470mg/Kg, mean0.273±0.106mg/Kg,The sediment distribution of Pb decreased in the order: lower> middle> upper layer in each station. Risk evaluation showed that potential ecological risk index of Pb is low in the reef sediments; accumulate partial index is belong to moderate pollution levels; enrichment factor is belong to the light~pollution-free . Pb of organisms is rang from 0.004-0.519 mg / Kg, mean 0.185 ± 0.170 mg / Kgin reef area; BCF value of Pb in organisms is generally higher than BAF value; its health risk factor is far less than 1, indicating that Pb has no obvious health risks on exposure population. Keywords-heavy metals; spatial distribution; ecological risk assessment

The Potential Ecological Risk of Pb for Multi-phase Medium of Artificial Reefs