Bioaccumulation of Metals in Mangrove Snail (Cerithidea obtusa) from Southwest Johor, Malaysia

Pollutants are persistent in the environment, taint food chain, and harm people's health because of their toxicity. In this study, mangrove snails called Cerithidea obtusa (C. Obtusa) were gathered from Southwest Johor, Malaysia, amounts macro micro elements Ca, Fe, K, Mg, Na, As, Mn, Zn soft tissues, shells, related surface sediments analysed. The Neutron Activation Analysis (NAA) method was used to calculate concentration. mean concentrations Mn found be followed by order Fe > Na K Mg Ca As sediment, while tissue shell C. Obtusa respectively. Enrichment Factor (EF) Zn, ranged 0.58 2.58, 0.82 1.04, 1.14 2.34, 2.32 4.18, 1.31 3.45, 1.11 1.52, 0.23 0.38, had lowest EF (0.23), 4.18 greatest (Na). Most showed geoaccumulation index (Igeo) < 0 except for Na. Based on Biota-Sediment Accumulation (BSAF), acts as a deconcentrator all Ca.