BIOACCUMULATION OF LEAD (PB) CONTENT IN AVICENNIA MARINA (FORSK.) VIERH AND BRUGUIERA GYMNORRHYZA (L.) LAMK FROM MANGROVE FOREST AREA IN MUARA ANGKE, JAKARTA, INDONESIAMAMAN RUMANTAAbstract MuaraAngke is a delta in North Jakarta Bay, which has heavy metal contamination, one of Lead (Pb). Generally, pollution in the Jakarta Bay is caused by anthropogenic activity by humans, and due to certain factors associated with terrestrial runoff and eutrophication. This study aims to (i) find the concentrations of heavy metal Pb in sediments in MuaraAngke in the periods of West and East season; (ii) find the accumulated capability of heavy metal Pb for each plants tissues (roots, stems, and leaves) of A. marina and B. gymnorhiza. Samples of roots, stems, and leaves was collected from MuaraAngke mangrove forest area, North Jakarta. The accumulation of heavy metal Pb is higher in leaves from A.marina than in roots, and stems, also in B. gymnorrhyza. The concentrations of heavy metal Pb in roots, stems and leaves of A. marina was respectively 5,36 μg/ g, 3,73 μg/g, and 28,67 μg/g and in B.gymnorrhyza was 12,17 μg/g, 6.27 μg/g, and 15.57 μg/g. The accumulation of heavy metal Pb in the sediment was found highest in the fifth station, followed by the third, fourth, second, and lowest in the first observation stations. The concentrations of heavy metal Pb from the highest to lowest stations was 120.70 μg/g, 91.00 μg/g, 81.90 μg/g, 71.80 μg/ g, and 66.43 μg/g.
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