Potential toxic elements in sediment and fishes of an important fish breeding river in Bangladesh: a preliminary study for ecological and health risks assessment

Indexical appraisal of potentially toxic elements (PTEs) in sediment and fish riverine ecosystem give valuable information for environmental management. In this research, PTEs were measured soft tissues six species from an important breeding river (Halda) Bangladesh to assess quality human health risks. The abundance sediments varied the decreasing order Fe > K Ca Ti Zr Sr Rb Mn Zn Cu Ni Pb Co. ranges mean concentrations as follows: Ca, 138.54–366.68; Cr, 8.86–11.34; Mn, 6.20–7.44; Fe, 52.98–871; Co, 2.0–3.06; Cu, 17.82–26.45; Zn, 48.27–115.75; Se, 5.16–6.79; Sr, 35.56–69.57; Hg, 0.42–2.15, Pb, 0.26–0.64 mg/kg. outcomes enrichment factor, geo-accumulation index, contamination factor spatially most samples moderately polluted by PTEs. Biota-sediment accumulation indicated that Co more concentrated than other elements. Target hazard quotient (THQ) individual element was below 1, suggesting people would not experience significant hazards if they ingest a single metal species.