10 documents found, page 1 of 1
Retardantes de chama bromados: uma revisão
Pieroni,Michelle C.; Leonel,Juliana; Fillmann,GilbertoPolybrominated diphenyl ethers (PBDEs), Polybrominated biphenyls (PBBs), Hexabromocyclododecane (HBCD) and Tetrabromobisphenol A (TBBP-A) are flame retardant widely used in plastics, textiles, furniture, consumer electronics, automobiles, among others.They are important components added to retard the spread of flame and, thus,mitigate deaths and destruction caused by fires. However, environmental studies conduc...
First appraisal of water contamination by antifouling booster biocide of 3rd ge...
Diniz,Lia Gracy R.; Jesus,Marcelle S.; Dominguez,Luis Alberto E.; Fillmann,Gilberto; Vieira,Eny M.; Franco,Teresa Cristina R. S.Diuron and Irgarol are antifouling booster that, despite evidences of their toxicities to various marine species, are still being used in paints of boats and marine structures. Irgarol has already been restricted in some countries though. In the present study, which is the first record of the antifouling biocides in this region characterized as one of the largest continuous mangrove area worldwide, the presence...
The influence of salinity and matrix effect in the determination of antifouling...
Dominguez,Luís A. E.; Caldas,Sergiane S.; Primel,Ednei G.; Fillmann,GilbertoA method for the determination of irgarol and diuron using C18 solid-phase extraction (SPE) and liquid chromatography with electrospray interface tandem mass spectrometry was optimized, validated and applied in estuarine and coastal waters under the influence of Rio Grande harbors (Patos Lagoon). The impact of pre-filtration and salinity in the extraction processes by SPE using C18 and polymeric adsorbents were...
Organotin pollution from pleasure craft at Paraty, a tourist area of Southeaste...
Borges,Camila de Leon Lousada; Fernandez,Marcos Antonio dos Santos; Castro,Ítalo Braga; Fillmann,GilbertoSome organotin compounds, such as TBT, are endocrine disruptors and harm marine ecosystems. Even after the global ban on organotins, increasing imposex levels have been detected in Stramonita haemastoma analyzed in 2004 and 2011 in some locations at Paraty, a tourist area in southeastern Brazil. The results of this study indicate that particulate and dissolved organic carbon and xenoestrogens might be interferi...
Input of organic matter in a large south american tropical estuary (Paranaguá E...
Martins,César C.; Seyffert,Bianca H.; Braun,Juliana A. F.; Fillmann,GilbertoThe Paranaguá Estuarine System is one of the most important environments of the South American coast. Fishing, urban and tourist activities, industries, sewage and the main shipping port for the export of grains in Brazil are sources of environmental impacts. The sources of sedimentary organic matter were evaluated by sterol concentrations which were obtained by gas chromatography with a mass spectrometer (GC-M...
Tintas anti-incrustantes de terceira geração: novos biocidas no ambiente aquático
Castro,Ítalo B.; Westphal,Eliete; Fillmann,GilbertoAntifouling agents have been used on vessels and boats since ancient civilizations. Thus, a brief history on the three generations of antifouling paints was provided in the present review. Additionally, information about physic-chemical properties, environmental levels, toxicology and analytical methods was discussed for the 16 "new" booster biocides used as third-generation antifouling paints. The main problem...
Biochemical normalization of trace metals in Arctocephalus australis
Baraj,Besnik; Niencheski,Luis Felipe; Fillmann,Gilberto; Hermanns,LucianoInitially, the heart concentration data does not seem relevant for use as a bioindicator, mainly due to its low concentration level. After applying a normalizing procedure, the heart results were a better Hg bioindicator (preconcentration coefficient 43.1) than those of the kidney (preconcentration coefficient 8.6). Cadmium preconcentration coefficients were 128.1, 195.3 and 5.2 for liver, kidney and heart, res...
Influence of effluents from a Wastewater Treatment Plant on nutrient distributi...
Santos,Isaac Rodrigues; Costa,Ronaldo Cataldo; Freitas,Ubiratan; Fillmann,GilbertoThe hypothesis that effluents treated through activated sludge process cause changes in nutrient biogeochemistry of receiving water bodies was investigated in Vieira creek, southern Brazil. Dissolved oxygen, suspended matter, and pH did not vary among the sampling stations. Nutrient, biochemical oxygen demand, and conductivity values were significantly higher downstream from the Wastewater Treatment Plant (WWTP...
Natural and anthropogenic sterols inputs in surface sediments of Patos Lagoon, ...
Martins,César de Castro; Fillmann,Gilberto; Montone,Rosalinda CarmelaThe Patos Lagoon, the largest coastal lagoon in the world, has long been receiving considerable anthropogenic input resulting from urban, rural and industrial activities. Thus, sewage contamination possibly originating from the more than 2 million inhabitants living within its drainage basin is examined in this study. Sediment samples collected from various points along the Lagoon were extracted, purified and a...
Validation of immunoassay methods to determine hydrocarbon contamination in est...
Fillmann,Gilberto; Bicego,Márcia C.; Zamboni,Ademilson; Fileman,Tim W.; Depledge,Michael H.; Readman,James W.The performance of two commercially available enzyme-linked immunosorbent assay (ELISA) kits (with antibodies attached to magnetic particles) for quantification of hydrocarbons in estuarine sediments is described. The BTEX RaPID Assay® was employed to analyse aliphatic and small aromatic hydrocarbons whilst the c-PAH RaPID Assay® was used to analyse the carcinogenic (> 4 aromatic rings) polycyclic aromatic hydr...