Consulta: subjectFacets:"Active biomonitoring"
Registros recuperados: 3
Data/hora: 06/06/2024 18:25:33

Bioavailability of particulate metal to zebra mussels: Biodynamic modelling shows that assimilation efficiencies are site-specific
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Bourgeault, Adeline; Gourlay-france, Catherine; Priadi, Cindy; Ayrault, Sophie; Tusseau-vuillemin, Marie-helene.
This study investigates the ability of the biodynamic model to predict the trophic bioaccumulation of cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni) and zinc (Zn) in a freshwater bivalve. Zebra mussels were transplanted to three sites along the Seine River (France) and collected monthly for 11 months. Measurements of the metal body burdens in mussels were compared with the predictions from the biodynamic model. The exchangeable fraction of metal particles did not account for the bioavailability of particulate metals, since it did not capture the differences between sites. The assimilation efficiency (AE) parameter is necessary to take into account biotic factors influencing particulate metal bioavailability. The biodynamic model, applied with AEs...
Tipo: Text
Palavras-chave: Bioaccumulation; Active biomonitoring; Bioavailability of particulate metals; Assimilation efficiency; Chemical sequential extraction.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00051/16218/14040.pdf

To what extend the dam dredging can influence the background level of metals in the Rhine River: using chemical and biological long-term monitoring to answer
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Lebrun, Jeremie D.; Dufour, Marine; Uher, Emmanuelle; Fabure, Juliette; Mons, Raphael; Charlatchka, Rayna; Gourlay-france, Catherine; Fechner, Lise; Ferrari, Benoit Jd.
Dredging generates remobilisation of sediments contaminated by non-degradable compounds such as metals, to which aquatic organisms can be exposed. This study aims at assessing the environmental impact of sediments remobilised in the Rhine River (France) during the dredging of Marckolsheim dam by pumping/dilution in 2013 on metal speciation and organisms' exposure. The monitoring coupling chemical and biological tools was performed 2 years before dredging operation on 2 sampling sites, upstream and downstream from the discharge of pumping/dilution, to acquire data on the natural variability of labile (DGT as passive samplers), dissolved and particulate concentrations of Cd, Co, Cr, Cu, Ni, Mn, Pb and Zn in Rhine during full hydrological cycles. In parallel,...
Tipo: Text
Palavras-chave: Active biomonitoring; Dreissena polymorpha; DGT; Metal bioavailability; Natural variability.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00413/52458/53244.pdf

Air quality biomonitoring of trace elements in the metropolitan area of Huancayo, Peru using transplanted Tillandsia capillaris as a biomonitor
Provedor de dados: Anais da Academia Brasileira de Ciências
Autores: CRUZ,ALEX RUBEN H. DE LA; AYUQUE,RODOLFO FRANKLIN O.; CRUZ,RONY WILLIAM H. DE LA; LÓPEZ-GONZALES,JAVIER L.; GIODA,ADRIANA.
Abstract  The air quality and distribution of trace elements in a metropolitan area of the Peruvian Andes were evaluated using transplanted epiphytic Tillandsia capillaris as biomonitors. Biomonitors were collected from the non-contaminated area and exposed to five sites with different types of contamination for three months in 2017. After exposure, the content of twenty-one elements were determined by ICP-MS analysis. Datasets were evaluated by one-way ANOVA, exposed-to-baseline (EB), hierarchical cluster analysis (HCA) and principal component analysis (PCA). Results showed significant differences among sampling sites for several elements. According to EF ratios for Ba, Cr, Cu, Pb, Sb, and Zn EB ratios value greater than 1.75 were found around urban...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Active biomonitoring; Bioaccumulation; Airborne trace elements; Peruvian Andes; Tillandsia capillaris.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100501