Abstract:
This study was conducted in order to determine the spatial distribution of
sedimentological characteristics and heavy metal contents of Marang coastal sediment.
The study area consists of 17 stations and sediment samples had been collected from 9
th
th
June till 11
June 2007. The analyzed data of sediment size and metals selected were
mapped using Geographical Information System (GIS) with the Arcview approach. In
general, the mean size of Marang coastal sediment ranged between 0.05 0 and 6.81 0
(fine sand) with poorly sorted (0. 72 0 and 2.00 0). Most of the stations were covered
with fine sediment and had very positively skewed (-0.21 0 and 0.68 0) that proved an
excess of finer grains. This might be due to the nearby river which is responsible to the
transportation of sediments. The range of total organic carbon (TOC) content was
between 0.12 % and 2.70 %. Concentration of heavy metals that had been detected using
ICP - MS ranged from 207.06 to 833.23 µgig for Mn; 135.88 to 4179.10 µgig for Cr;
1.12 to 24.95 µgig for Co; 4.93 to18.44 µgig for Cu; 13.98 to 90.84 µgig for Zn; 0.03 to
0.09 µgig for Cd and 6.01 to 20.82 µgig for Pb. Correlation between percentage of TOC
and particle size showed weak relationship (r=0.1658).
