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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Combining contamination indexes, sediment quality guidelines and multivariate data analysis for metal pollution assessment in marine sediments of Cienfuegos Bay, Cuba

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Author(s):
Pena-Icart, Mirella ; Pereira-Filho, Edenir Rodrigues ; Fialho, Lucimar Lopes ; Nobrega, Joaquim A. ; Alonso-Hernandez, Carlos ; Bolanos-Alvarez, Yoelvis ; Pomares-Alfonso, Mario S.
Total Authors: 7
Document type: Journal article
Source: Chemosphere; v. 168, p. 1267-1276, FEB 2017.
Web of Science Citations: 10
Abstract

The purpose of the present work was to combine several tools for assessing metal pollution in marine sediments from Cienfuegos Bay. Fourteen surface sediments collected in 2013 were evaluated. Concentrations of As, Cu, Ni, Zn and V decreased respect to those previous reported. The metal contamination was spatially distributed in the north and south parts of the bay. According to the contamination factor (CF) enrichment factor (EF) and index of geoaccumulation (I-geo), Cd and Cu were classified in that order as the most contaminated elements in most sediment. Comparison of the total metal concentrations with the threshold (TELs) and probable (PELs) effect levels in sediment quality guidelines suggested a more worrisome situation for Cu, of which concentrations were occasional associated with adverse biological effects in thirteen sediments, followed by Ni in nine sediments;. while adverse effects were rarely associated with Cd. Probably, Cu could be considered as the most dangerous in the whole bay because it was classified in the high contamination levels by all indexes and, simultaneously, associated to occasional adverse effects in most samples. Despite the bioavailability was partially evaluated with the HCl method, the low extraction of Ni (<3% in all samples) and Cu (<55%, except sample 3) and the relative high extraction of Cd (50% or more, except sample 14) could be considered as an attenuating (Ni and Cu) or increasing (Cd) factor in the risk assessment of those element. (C) 2016 Published by Elsevier Ltd. (AU)

FAPESP's process: 12/01769-3 - Development of spectroanalytical methods for direct analysis of waste electrical and electronic equipments and cosmetics
Grantee:Edenir Rodrigues Pereira Filho
Support Opportunities: Regular Research Grants