Connectivity Heavy Metals in Shallow Groundwater, Sediment and Seawater in Coastal Area

Rapid development in coastal areas has lead to an increase in pollutants in the surrounding environment. One of the types of pollutants that are commonly found heavy metals. This study investigates the connectivity of heavy metals in ground water and heavy metals that exist in marine sediments and seawater. Six metals (As, Hg, Cr, Pb, Cu and Fe) in coastal areas in Tugu Semarang were examined. These metals were found ini marine sediment, groundwater and seawater in coastal areas. There is gradual decreased of the metal concentrations in sediment, seawater and groundwater, and the highest concentration of metals was found in marine sediment and the lowest in coastal groundwater. The connectivity of metals in marine sediment, groundwater and seawater predicted due to changes in pH and salinity of sediment and water. The increasing number of reclamation, waste water disposal from industrial and urban areas may has caused the increasing of heavy metals concentration in the coastal areas. The results of this study confirmed the presence of connectivity of heavy metals in the groundwater, sediment and seawater in the coastal area of Semarang.