Concentrations of Heavy Metals as Proxies of Marine Pollution along Nellore Coast of South District, Andhra Pradesh

Madri Pramod Kumar, Tella Lakshmi Prasad, Kothapalli Nagalakshmi, Nadimikeri Jayaraju and Ballari Lakshmanna

A chapter in Heavy Metals - Their Environmental Impacts and Mitigation from IntechOpen

Abstract: Bottom sediment samples from six stations were sampled in pre monsoon 2016, from the Govindampalli - Durgarajupatnam (GP-DP) coast. Heavy metals viz., Fe, Mn, Cr, Cu, Ni, Pb, Zn and Cd analysis was carried out by using ICP-OES, and the average concentrations are as follows Fe > Mn > Zn > Cr > Pb > Ni > Cu > Cd. Various environmental indices like Factor Analysis (FA), Geo-accumulation Index (Igeo), Enrichment Factor (EF) and Pollution Load Index (PLI) were applied to the chemical data in order to know the levels of contamination and factors contributing to the pollution. Correlation coefficient results exhibits significant positive and negative relationships among Fe, Mn, Pb, Zn, Cd. All the environmental indices suggest that heavy metals were present at higher concentrations and the impacts of anthropogenic activities are crucial that serves as source of heavy metals in the zone. Relatively, maximum number of heavy metals viz., Fe, Ni and Pb were accumulated at the brackish environment i.e., at confluence of Swarnamukhi river (GP-S Station).

Keywords: GP-DP coast; heavy metal analysis; factor analysis; geo-accumulation index; enrichment factor; pollution load index (search for similar items in EconPapers)
JEL-codes: Q55 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:219663

DOI: 10.5772/intechopen.95275

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