Heavy metal pollution in Central Venice Lagoon bottom sediments: Evaluation of the metal bioavailability by geochemical speciation procedure | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

1921797

Reference Type

Journal Article

Title

Heavy metal pollution in Central Venice Lagoon bottom sediments: Evaluation of the metal bioavailability by geochemical speciation procedure

Author(s)

Perin, G; Bonardi, M; Fabris, R; Simoncini, B; Manente, S; Tosi, L; Scotto, S

Year

1997

Is Peer Reviewed?

Yes

Journal

Environmental Technology
ISSN: 0959-3330
EISSN: 1479-487X

Report Number

BIOSIS/97/24323

Volume

Issue

Page Numbers

593-604

Language

English

DOI

10.1080/09593331808616577

Web of Science Id

WOS:A1997XM60800003

Abstract

BIOSIS COPYRIGHT: BIOL ABS. Bottom sediments of the central area of the Venice Lagoon (Italy) and some lagoon canals, chosen as an anaerobic reference environment, were analyzed by a sequential extraction procedure for Cr, Cu, Ni, Pb, Zn, Mn, and Fe. Bio-Available Phases (BAPs) and Non-Bio-Available Phases (NBAPs) have been determined in the Malamocco-Marghera Canal, to define the significant level of heavy metal contamination of the sediment. Relationships among metal distributions with Fen oxides/hydroxides and sulfides were determined in both environments, using statistical methods. The central lagoon area shows low pollution and a balanced influence of all the sediment components in the metal complexing processes, mostly due to the manganese and iron matrices. The inner canals are very polluted with heavy metals strongly bonded to H2S that form highly insoluble compounds, as demonstrated through the correlation analysis. The authors suggest different procedures for lagoon restoration due to th

Keywords

speciation; Fe-Mn-oxides; sulfides; sediment(s); heavy metal(s)