Article

Environmental assessment of dredged sediment in the major Latin American seaport (Santos, São Paulo — Brazil): An integrated approach

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central coast of the São Paulo State, Brazil. Sediment qualitywas evaluated through physicochemical analysis and toxicity tests of sediments collected in the disposal site and adjacent area. The physicochemical characterization of the sediments involved grain size distribution, concentrations of polycyclic aromatic hydrocarbons (PAHs), chlorinated and aromatic hydrocarbons, polychlorinated biphenyls (PCBs), pesticides, phthalates, metals and nutrients. Acute and chronic toxicity tests were employed, using amphipods (Tiburonella viscana) and sea urchins (Lythechinus variegatus), respectively. Results revealed toxicity by all the methods applied here, suggesting that the area of disposal of dredged material is significantly alteredwith respect to sediment quality and probably capable of generating deleterious effects on the local biota. Aiming to elucidate the association between the distinct environmental variables and the biological effects measured in laboratory, Factor Analysis was performed. Results revealed that despite most contaminant concentrations were found below the limits established by Brazilian legislation, biological effects were related to metals (chronic toxicity) and organic compounds (acute toxicity). The application of multivariate analysis proved to be particularly useful to assess and interpret the results in an integrated way, particularly due to the large number of parameters analyzed in environmental assessments, and should be applied in future studies.

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Ketersediaan

Informasi Detail

Judul Seri

Science of the Total Environment

No. Panggil

ATC PO SAR e

Penerbit

brazil : Elsevier., 2014

Deskripsi Fisik

9 p.

Bahasa

English

ISBN/ISSN

0048-9697

Klasifikasi

PO

Tipe Isi

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Tipe Media

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Tipe Pembawa

online resource

Edisi

-

Subjek

Dredged material
Sediment
Contamination
Toxicity tests
Environmental assessment
Multivariate analyses

Info Detail Spesifik

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Pernyataan Tanggungjawab

A. Cesar

Versi lain/terkait

Lampiran Berkas

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