Heavy Metal Concentrations In Sediments Of The
Capibaribe River Estuary In The Metropolitan
Region Of Recife, Pernambuco-Brazil
Author(s)
S. J. Macedo, H. K. Philippini da Silva, F. M. M. Brayner,
M. M. M. B. Duarte & A. M. F. Barbosa
Abstract
The objective of this research was to assess the heavy metal concentration in
sediments from the Capibaribe river estuary located in Recife City (Pernambuco,
Brazil). Sampling was carried out in the rainy and dry seasons in six fixed
stations along the river estuary during the rainy/2002 and dry/2003 seasons.
Superficial sediment samples were collected between 0 – 10 cm deep, during low
tide. 14 traps were also used and the settled sediment collected 24 hours later.
Dissolved oxygen, pH, salinity, temperature and water transparency data were
obtained in the same stations. To quantify cadmium, cobalt, copper, chromium,
iron, lead, manganese, nickel and zinc metals an Atomic Emission Spectrometer
with Inductive Coupled Plasma (ICP-AES) method was used. No cobalt, lead or
nickel were detected, all of them below the quantifying limit. The obtained
results to both sediments and sedimentary material showed concentration levels
above \“background” indicating a high level of contamination in the study area.
The pH, salinity, temperature and water transparency parameters results are as
expected to estuarine areas. The dissolved oxygen content indicated that
pollution is threatening the water quality in the area studied.
Keywords: estuary, heavy metal, sediments.
1 Introduction
Estuaries are complex ecosystems that are controlled and regulated by a variety
of physicochemical and biological processes. In addition, estuarine organisms
Keywords
estuary, heavy metal, sediments.
Related Book
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