Study of heavy metal in sediment of The Klagison River, Sorong City.

The Klagison River in Sorong City is used by the sand mining industry to dispose of liquid waste. Consequently, turbidity and sedimentation occurred. This study aimed to analyze the water quality, heavy metal concentrations in sediments, and the relationship between the two. The sampling points were determined using the purposive sampling method. Data analysis included the pollution load index (PLI), geoaccumulation index (Igeo), and correlation analysis. The TDS value of the Klagison River ranged from 126 to 168 mg/L and turbidity range of 19.98 to 724 NTU. The analysis results pollution load index showed that the sediment with a PLI value of 0.557 was neither polluted nor lightly polluted. Index geoaccumulation showed Cr and Cu values of 100% (Igeo < 0), while Mn and Fe were 80% unpolluted (Igeo < 0) and 20% unpolluted or mildly polluted (0 < Igeo < 2). The concentrations of Cr, Mn, and Fe had a negative correlation with the water quality parameters of TDS and turbidity. The concentration of Cu has a positive correlation with the water quality parameters, TDS, and turbidity. [ABSTRACT FROM AUTHOR]