Spatio-temporal variability of trace metals and major ions in a small tropical river, southwest coast of India

Nishitha, D'Souza; Praveenkumarreddy, Yerabham; Khare, Neloy; Udayashankar, H N; Balakrishna, Keshava

doi:10.1007/s10661-019-7852-y

Cited by 5 publications

(1 citation statement)

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“…Though tropical rivers account for greater than 60% of the water and sediment discharge to the world oceans (Gaillardet et al, 1995 ), very few studies exist on the dissolved trace metal behavior in the estuarine environment of tropics (Alagarsamy, 2006 ; Cyriac et al, 2021 ; Satapathy & Panda, 2015 ). Specific to Sita-Swarna rivers, only two studies are documented as-on-date (Nishitha et al, 2019 ; Tripti et al, 2013 ). Hence to fill the gap in the literature, this study has been taken up in the estuarine environment of Sita-Swarna.…”

Section: Introductionmentioning

confidence: 99%

Study of trace metal contamination and ecological risk assessment in the sediments of a tropical river estuary, Southwestern India

Nishitha

Amrish

Kumar

et al. 2022

Environ Monit Assess

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The present study aims to assess the extent of trace metal pollution in the sediments of Sita-Swarna estuary, west coast of India, and investigate their possible ecological risk on the aquatic environment. The sediment cores were analyzed for sand, silt, clay, organic carbon, and trace metals (Al, Fe, Mn, As, Cd, Co, Zn, Pb, Ni, Cr, and Cu) at 2-cm intervals. The study revealed that sediments have deposited in relatively violent to very violent hydrodynamic energy conditions. Factor analysis indicated that the metal distribution is mainly controlled by Fe–Mn oxyhydroxides and organic carbon. Further, the geochemical approach, pollution indices, and statistical evaluation revealed moderate pollution in the catchment. From an ecotoxicological perspective, the estimated risk index (RI) value was found to less than 150, indicating low risk for aquatic life. Thus, this baseline study would help to adopt strategies in pollution control and protect the fragile marine environment.

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