Abstract :
The Mangrove Forest Nature Reserve East Coast (CAHBPT) in Jambi Province
has functions, one of which is to improve water quality by absorbing dangerous
heavy metals such as Pb and Cu which originate from human activities around the
waters. This absorption can be done by using plants that can live in extreme
conditions such as the Rhizophora apiculata Blume. plant in CAHBPT Jambi.
The purpose of this study was to determine the potential and mechanism of
R. apiculata in the phytoremediation of heavy metals Pb and Cu in the CAHBPT
area, Alang-Alang Village, Tanjung Jabung Timur, Jambi. Sampling was carried
out by purposive sampling method at three station points. Analysis of heavy
metals was carried out using an Atomic Absorption Spectrophotometer (AAS) at
the UPTD Environmental Laboratory, Department of Environment and Land of
South Sumatra Province. The calculation of the Bioconservation Factor (BCF)
aims to determine the potential of R.apiculata in accumulating Pb and Cu metals,
as well as the calculation of the Translocation Factor (TF) to determine the
phytoremediation mechanism of R. apiculata in CAHBPT, Alang-alang Village,
Jambi. The results of this study found that the accumulation of Pb and Cu metals
in sediments ranged from 11.04-12.36 mg/kg and 7.93-9.08 mg/kg. The
accumulation of Pb and Cu metals in the roots of R. apiculata ranges from 2.34-
2.65 mg/kg and 1.56-2.93 mg/kg. The accumulation of Pb and Cu metals in the
leaves of R. apiculata ranged from 2.77-3.16 mg/kg and 0.61-1.05 mg/kg. The
phytoremediation potential of R. apiculata at the research site is included in the
excluder category or plants still limit the accumulation of heavy metals enter the
body (BCF<1). R. apiculata at the research site translocated Pb metal using a
phytoextraction mechanism (TF>1) and Cu metal using a phytostabilization
mechanism (TF<1). This study shows that R. apiculata has the potential as a
phytoremediation agent to prevent heavy metal pollution in the CAHBPT area,
Alang-Alang Village, Tanjung Jabung Timur, Jambi.