Potential human health risks from toxic metals via mangrove snail consumption and their ecological risk assessments in the habitat sediment from Peninsular Malaysia

摘要: Abstract Samples of mangrove snails Nerita lineata and surface sediments were collected from nine geographical sampling sites in Peninsular Malaysia to determine the concentrations eight metals. For soft tissues, ranges metal (μg g −1  dry weight (dw)) 3.49–9.02 for As, 0.69–6.25 Cd, 6.33–25.82 Cu, 0.71–6.53 Cr, 221–1285 Fe, 1.03–50.47 Pb, 102.7–130.7 Zn while Hg as 4.00–64.0 μg kg  dw . sediments, 21.81–59.49 1.11–2.00 5.59–28.71 18.93–62.91 12 973–48 916 25.36–172.57 29.35–130.34 2.66–312 μg kg To ecological risks on habitat sediment quality guidelines (SQGs), geochemical indices, potential risk index (PERI) used. Based SQGs, all metals investigated most unlikely cause any adverse effects. geoaccumulation enrichment factor, also not polluted by studied The PERI values based Hg, Pb this study found ‘low risk’. In order assess health risks, estimated daily intakes (EDI) be lower than RfD metals, except some investigated. Furthermore, calculated target hazard quotients (THQ) less 1. However, total (TTHQ) more 1 high level consumers KPPuteh. Therefore, moderate amount intake is advisable avoid human consumers.