Analysis of Heavy Metals in Sediments Using the Magnetic Susceptibility Method in the Coastal Waters of Batu Gong, Konawe Regency, Southeast Sulawesi Province
DOI:
https://doi.org/10.56099/jrgi.v7i01.111Keywords:
Magnetic susceptibility, X-ray Fluorescence, heavy metals, Geoaccumulation IndekxAbstract
Abstract. This study was conducted in the coastal area of Batu Gong, Konawe Regency, Southeast Sulawesi Province, aiming to: (1) determine heavy metal content using magnetic susceptibility, (2) assess heavy metal concentration through X-ray Fluorescence (XRF), and (3) evaluate sediment quality using pollution indices. Magnetic susceptibility values ranged from 4.5 × 10⁻⁸ m³/kg to 15.1 × 10⁻⁸ m³/kg in coastal areas, and from 3 × 10⁻⁸ m³/kg to 11.8 × 10⁻⁸ m³/kg in marine areas. The XRF analysis detected heavy metals including nickel (Ni) < 100 ppm, iron (Fe) 43,475 ppm, cobalt (Co) 200 ppm, and zinc (Zn) < 100 ppm. Based on the Pollution Load Index (PLI), sediments were categorized as polluted. The Geoaccumulation Index indicated that Ni and Fe were unpolluted, while Co was classified as moderately polluted.
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