Distribution of Heavy Metals in Sediments and Soft Tissues of the <i>Cerithidea obtusa</i> from Sepang River, Malaysia

The main purpose of the research was to analyze distribution Arsenic (As), Cadmium (Cd), Copper (Cu), Iron (Fe), Nickel (Ni), Cobalt (Co), Mangan (Mn), and Zinc (Zn) in soft tissues, shells, associated surface sediments Cerithidea obtusa (C. obtusa) mangrove snails collected from Sungai Besar Sepang. concentration iron (Fe) found be highest relation other toxic elements sediments, shells C. obtusa. concentrations Cu Zn tissues were exceed indicating bioaccumulation these metals. Metal pollution assessed with Enrichment Factor (EF), Geoaccumulation Index (Igeo), Pollution (CF). EF, Igeo, CF 0.34 22.41, -3.37 2.65, 0.14 9.42, respectively. results indicate that Sepang are contaminated As Zn. According bivalve results, act as a macro-concentrator for result, it is suggested ongoing monitoring releases heavy metals anthropogenic sources stricter environmental protection measures should implemented.