ANALYSIS OF HEAVY METAL IN PANJANG ISLAND CENTRAL TAPANULI POPULATION ZONE

A research has been conducted to analysethe heavy metals in resident zone around Panjang Island
water, Central Tapanuli.The aim is to observe the content of heavy metals Cu, Cr, Pb and Fe in sea water at each
data station and the distribution pattern of heavy metals level due to the existence of heavy metals source to
resident zone surrounding Panjang Island water. Sea water sampling was conducted at six points. The test of sea
water was conducted using Atomic Absorption Spectrometer (AAS) using light adsorption principle by atoms.
The result showed that the heavy metals Cu = 0.006 mg/l, Cr = 0.025 mg/l, Pb = 0:13 to 0:20 mg/l, and Fe = 0:19
to 0:42 mg/l. Based on the heavy metals distribution point, Coal ash disposal area to the residential area around Panjang Island have heavy metals level above the average sea water quality standard 0:32 mg/l. The differences metal content in each point due to natural factors such as the direction of sea wave, precipitation and sediment material and anthropogenic factors such as demographic residential waste pollution, industrial and port activity.