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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Use of different criteria for evaluation of potential bioavailability of heavy metals in bottom sediments of upper Tietê (São Paulo)

Full text
Author(s):
Graziela Meneghel de Moraes [1] ; Jefferson Mortatti [2] ; Renato Alessandro Lopes [3]
Total Authors: 3
Affiliation:
[1] Universidade de São Paulo. Centro de Energia Nuclear na Agricultura. Programa de Pós-Graduação Química na Agricultura e no Ambiente - Brasil
[2] Universidade de São Paulo. Centro de Energia Nuclear na Agricultura - Brasil
[3] Universidade de São Paulo. Centro de Energia Nuclear na Agricultura. Programa de Pós-Graduação Química na Agricultura e no Ambiente - Brasil
Total Affiliations: 3
Document type: Journal article
Source: BRAZILIAN JOURNAL OF GEOLOGY; v. 41, n. 3, p. 463-471, 2011-07-00.
Abstract

Abstract: Different criteria to evaluate bioavailability of heavy metals in sediments of Upper Tietê River Basin were used from acid volatile sulfide (AVS) and simultaneously extracted metals (SEM) methods. Among the criteria, SEM-AVS, normalized by organic matter, was more appropriate for bioavailability determination of heavy metals showing a non-bioavailability at Ponte Nova, Biritiba, Mogi das Cruzes and Pirapora sampling points. However, the sediment quality guidelines (TEL and PEL) showed toxicity effects along the basin, due to the guideline values do not take into account the local natural background level, demonstrating that TEL and PEL criteria overestimate the bioavailability of heavy metals in bottom sediments. (AU)

FAPESP's process: 08/08774-7 - Distribution of the heavy metals in bottom sediments in the basin of Alto Tietê: Factors of Enrichment and index of geo-accumulation
Grantee:Graziela Meneghel de Moraes
Support Opportunities: Scholarships in Brazil - Master