Trace Metals Distribution in Sediment Fractions of Karimata Strait, Indonesia
Abstract: The profile
concentration of heavy metals, organic matter and the composition of the grain
sizes is determined in two sediment cores from Karimata Strait. This study
aimed to estimate the distribution of sediment grain sizes and distribution of
heavy metals (Pb, Cu, Zn, Ni, As, and Fe) in three sediment fractions (>250
μm, 63-250 μm and <63 m) of Karimata Strait. Sampling was conducted using
box core. Graining size analysis was carried out through sieving, continue with
digestion, and analyze the heavy metals using Inductively Coupled
Plasma-Optical Emission Spectrometry (ICP-OES). Results of the study show that
the sediment grain size distribution is strongly influenced by the water
hydrodynamic condition (currents). It can be seen by the dominance of finding
coarse grain size in the research areas. The highest concentration of the heavy
metals was found in the finest grain size (<63 m) due to the larger surface
area and higher adsorption capacity. Distribution of heavy metals Cu, Pb, Zn
and Ni in the upper layer of sediments is higher than in the bottom layer.
Furthermore, the As and Fe concentration in the surface were lower than in the
bottom layer. Statistical analysis shows an association and a source of heavy
metals mainly coming from the surrounding areas. It is supported by the
enrichment factor values of finding heavy metals generally has been undergone
enrichment.
Keyword: Grain sizes,Heavy
metals, ICP-OES,Karimata strait, Sediment
Author: Duaitd Kolibongso, Tri
Prartono, Ali Arman
Journal Code: jpperikanangg170037