José Roberto Ferreira

• ICMGP - International Conference on mercury as a global pollutant, AR.EXT

• Abstract

  This proposal is devoted to the development of methods to assess for metal contamination in fish, mainly related to tilapias (Oreochromis niloticus). By using fish bioassays, the lethal concentrations (CL50) for Cd, Cu and Cu+Cd and the respective metalothioneins (MTs) formation, as a detoxification mechanism, will be investigated. The formation and elimination of metalothioneins in organ…

  Metallothioneins in tilapias (Oreochromis niloticus): formation and detoxification assessed by fish bioassay with the use of isotopic tracers 111Cd and 65Cu, AP.R
• A sample preparation procedure for the determination of total mercury and total arsenic in Ginkgo biloba and Valeriana officinalis phytopharmaceuticals by atomic fluorescence spectrometry(icmgp-os17., AR.EXT

(Only some records are available in English at this moment)

• Acute and chronic toxicity bioassays with Cd and Cu and (Cu + Cd) in tilapias (Oreochromis niloticus), BP.MS

• Abstract

  In the Guamium river basin, a branch of the Piracicaba river, which is at high deterioration degree due both to the lack of riparian zone, forested area surround and wrong land usage, it will be selected ecological units like bottom and suspended sediments, to demonstrate the disordered land development in a seasonal approch, during 01 year. The suspended matter will only be sampled at th…

  Bottom and suspended sediments characterization transported by the Guamium river, Piracicaba river basin, SP taking into account the sazonality., BP.MS
• Determination of total Hg in sugarcane (var SP80-1842) using decomposition by Shöniger flask combustion method and detection by atomic fluorescence spectrophotometry (AFS), BP.IC