Major and trace element assessment of Tietê river sediments, São Paulo, Brazil

Major and trace element assessment of Tietê river sediments, São Paulo, Brazil

The objective of this study was to quantify major and trace elements present in sediments collected from the one of Brazil’s most important rivers, Tietê River. Sediments from 5 different sampling points (P 0 –P 4 ), in 3 campaigns (2008/2009), from the headwaters to Suzano County upstream from São...

Full description

Saved in:
Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry Vol. 299; no. 1; pp. 797 - 805
Main Authors: Favaro, D. I. T., Alegre, G. F., Borrely, S. I., Vukan, W., Vieira, A. S., Oliveira, S. M. B.
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 2014
Springer
Subjects:
Analysis
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Fluorescence
Hadrons
Heavy Ions
Hyalella azteca
Inorganic Chemistry
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
River sediments
Rivers
X-ray spectroscopy
Brazil
Brazil, Sao Paulo, Tiete R
Trace elements
Enrichment factor
Sediments
Tietê river
Metals
INAA
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The objective of this study was to quantify major and trace elements present in sediments collected from the one of Brazil’s most important rivers, Tietê River. Sediments from 5 different sampling points (P 0 –P 4 ), in 3 campaigns (2008/2009), from the headwaters to Suzano County upstream from São Paulo city were collected. X-ray fluorescence was applied for measuring total concentration of major elements and instrumental neutron activation analysis (INAA) for trace elements. The elements Cd, Hg and Pb were determined by atomic absorption spectrometry after digestion using the US EPA 3,051 procedure. These metal concentrations were compared to the PEL and TEL oriented values from CCME. The sampling sites P 3 and P 4 , near industrialized areas, showed the highest concentrations for potentially bioavailable metals, mainly Pb and Hg. The results obtained by INAA were compared to upper continental crust values. A strong enrichment was found for the elements As, Br, Sb, Th, U and Zn. These results evidenced contamination by industrial effluents and sewage even relatively close to the Tietê River headwaters. The worst biological effects (acute toxicity) on benthonic organism Hyalella azteca were also observed at P 3 and P 4 .
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-013-2702-9