Sediment Quality Guidelines
Mostrando 1-12 de 14 artigos, teses e dissertações.
-
1. Heavy metal concentrations and ecological risk assessment of the suspended sediments of a multi-contaminated Brazilian watershed
ABSTRACT. Metal concentrations in suspended sediments of one of the most polluted rivers in Brazil were measured. Concentrations of Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn were determined by inductively coupled plasma while Hg and As were analyzed with hydride generation flow injection atomic absorption spectroscopy. Contamination of As, Cd, Cr, Cu, Fe, Hg, Mn, N
Acta Sci., Agron.. Publicado em: 28/03/2019
-
2. Distribution and Sources of Aliphatic and Polycyclic Aromatic Hydrocarbons in Surface Sediments of Itajaí-Açu Estuarine System in Brazil
The Itajaí-Açu estuarine system, located in southern Brazil, has great economic importance due to the presence of two ports (Itajaí and Navegantes). This system is affected by industrial and dredging activities, which can cause the remobilization of pollutants accumulated over time in the sediment. In this context, hydrocarbons were assessed in twelve sur
J. Braz. Chem. Soc.. Publicado em: 2017-04
-
3. Distributions of trace metals in sediment cores from a hypertrophic reservoir in northeast Brazil
As distribuições de Al, Cu, Co, Cr, Fe, Mn, Ni, Pb e Zn foram investigadas em dois sítios de sedimentos do reservatório Macela, Nordeste do Brasil. A análise de componentes principais (PCA) separou nitidamente os sítios de sedimentos coletados e as suas diferentes seções. Cu, Cr, Mn e Zn apresentaram as maiores concentrações nas seções do topo (0
J. Braz. Chem. Soc.. Publicado em: 2013-02
-
4. Estudio de la contaminación por metales en sedimentos acuáticos de la Bahía de Matanzas
Surface sediments of the Bay of Matanzas (Cuba) were studied to assess its environmental quality by using several criteria (metal content index, pollution load index and sediment quality guidelines). Two partial digestion sediment procedures and a modified BCR sequential extraction were used. The concentrations of metals were measured by atomic spectroscopy
Química Nova. Publicado em: 2012
-
5. Avaliação da composição isotópica do chumbo e da distribuição elementar nos sedimentos da represa Pedro Beicht, Cotia, São Paulo / Evaluation of isotopic composition of lead and elemental distribution in the sediments of the Pedro Beicht reservoir, Cotia, São Paulo
The water reservoir named Pedro Beicht provides water to five hundred thousand people in the metropolitan region of São Paulo city and is known by its excellent aquatic system quality. It is managed by Sanitation Company of São Paulo State (SABESP) and is surrounded by the Forest Reserve Morro Grande (RFMG). The RFMG was created in 1979 to ensure flora and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2011
-
6. Concentrações e associações geoquímicas de Pb e Zn em sedimentos do rio São Francisco impactados por rejeitos da produção industrial de zinco
Surface sediments from the River São Francisco were analyzed to investigate the impact, due to the presence of metals (Cd, Cu, Pb, Zn) in wastes from a metallurgical industry in the city of Três Marias/MG, Brazil. The concentrations and geochemical associations of Pb, Zn and trace metals associated with the minerals employed in zinc production were measure
Química Nova. Publicado em: 2010
-
7. Avaliação da qualidade de sedimentos - estudo de caso: sub-bacia do Ribeirão Espírito Santo, afluente do Rio São Francisco
This study evaluated the environmental impact resulting from surface water and sediment contamination by metals in a watershed affected by a tailing basin that controls effluents coming from a zinc-ore beneficiation plant. The studies combined assessments of sediment chemistry (exceedances of sediment quality guidelines), benthic assemblage structure and acu
Química Nova. Publicado em: 2009
-
8. Regional geochemical baselines and controlling factors for trace metals in sediments from the Poxim River, Northeast Brazil
A sub-bacia hidrográfica do rio Poxim é formada por quatro rios de água doce, Poxim-Açu, Poxim-Mirim, Poxim e Pitanga e está situada na porção leste do Estado de Sergipe, Nordeste do Brasil. Nesse trabalho foi investigada a distribuição, os fatores que controlam as concentrações e o risco de toxicidade para Co, Cr, Cu, Li, Mn, Ni, Pb, Zn, Al e Fe
Journal of the Brazilian Chemical Society. Publicado em: 2009
-
9. Avaliação da contaminação por elementos metálicos dos sedimentos do Estuário Santos - São Vicente
Three approaches were applied to evaluate metal contamination in 41 sediment samples from the Santos - São Vicente Estuarine System: normalization to Al, statistical analysis and sediment quality guidelines (SQGs). The results showed increases in the concentrations of Zn, Ni, Pb, Cd, Cr and Hg, which seemed to be associated with human activities. The levels
Química Nova. Publicado em: 2008
-
10. Integrated environmental assesment of Santos estuarine system s disposal site and adjancent zones / Diagnostico ambiental integrado da area de influencia do descarte do material dragado do estuario de Santos
The Atlantic Forest coastal plain which surrounds the city of Santos in the State of São Paulo, Brazil, has a great economic importance, principally due to the port of Santos, the largest in Latin America, and the Cubatão industrial complex. The regions estuary has been polluted by multiple contaminant sources for decades, due to industrial, portuary and
Publicado em: 2008
-
11. Qualidade, heterogeneidade espacial ebiodisponibilidade de metais no sedimentode um reservatório tropical urbano eutrofizado (Reservatório Guarapiranga,SP) / Quality, space heterogeneity and bioavailability of metals in the sediment of a tropical urban eutrophic reservoir (Guarapiranga Reservoir, SP)
Os sedimentos, pela sua capacidade de acumular compostos, têm grande importância na avaliação do nível de contaminação e poluição dos ecossistemas aquáticos continentais. Este trabalho tem como objetivo avaliar a qualidade do sedimento de um reservatório urbano (Reservatório Guarapiranga, SP, Brasil), quanto ao teor de metais fracamente ligados a
Publicado em: 2008
-
12. Critérios para avaliação da qualidade de sedimentos - Estudo de caso: Sub-bacia do Ribeirão Espírito Santo, afluente do Rio São Francisco / Criteria for evaluating sediment quality - Case Study: Sub-Watershed of Espírito Santo Stream; Affluent of the São Francisco River
Sediment Quality Values Guidelines (SQVG) have been used for evaluating ecological risk associated with the sediment contamination for benthonic organisms. The main objective of this work was to develop methodologies and to collect data that allowed the application of SQVG for the following metals: Cd, Cu, Pb, Ni and Zn. The location chosen for the case stud
Publicado em: 2007