Sources and distribution of polycyclic aromatic hydrocarbons in a an urbanized tropical estuary and adjacent shelf, Northeast of Brazil.

Abstract:

:Located in Northeastern Brazil, the Capibaribe Estuarine System is an important ecosystem that supplies food and protection for nursery of several species with ecological and economic importance. It is located inside an urbanized area, receives untreated domestic and industrial effluents, and houses some marinas and the Harbor of Recife, which are very important to national and international communities. The distribution and sources of PAHs were investigated in sediments from CES and adjacent shelf. Total PAH concentrations ranged from non-detectable to 497.6 μg g(-1). Pyrolytic sources predominated in most of sites, but petrogenic PAHs were also recorded. The concentration decrease of PAHs toward adjacent shelf suggests that the main source of these compounds is in the upper portion of estuary, where there is an intense discharge of sewage, but atmospheric input also seems to be relevant to the area. The results reinforce the important role of an estuary in contaminant retention.

journal_name

Mar Pollut Bull

authors

Maciel DC,de Souza JRB,Taniguchi S,Bícego MC,Zanardi-Lamardo E

doi

10.1016/j.marpolbul.2015.09.051

subject

Has Abstract

pub_date

2015-12-15 00:00:00

pages

429-433

issue

1

eissn

0025-326X

issn

1879-3363

pii

S0025-326X(15)30066-7

journal_volume

101

pub_type

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