T. R. B. Melo

Learn More
Autoxidation of linoleate micelles in aqueous alkaline solutions was studied by absorption spectroscopy. Autoxidation was initiated in either a UV-induced or a spontaneous decomposition (self-initiation) of hydroperoxides, initially present as trace impurity. In both cases, the hydroperoxides, the primary oxidation products, increased quadratically with(More)
Large Marine Ecosystems such as the Canary Current system off West Africa sustains high abundance of small pelagic prey, which attracts marine predators. Seabirds are top predators often used as biodiversity surrogates and sentinel species of the marine ecosystem health, thus frequently informing marine conservation planning. This study presents the first(More)
A sensitive Enzyme Linked ImmunoSorbent Assay (ELISA) based on polyclonal antibodies was tested in a water sampling exercise at field scale. In the absence of deethylatrazine (DEA), results indicate that the method is useful for the determination of atrazine concentrations between 0.1 and 10 micrograms/liter. When compared with gas chromatographic analysis,(More)