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Optimization and validation of a micro–QuEChERS method for phthalates detection...
Sambolino, Annalisa; Rodriguez, Marta; De la Fuente, Jesus; Arbelo, Manuel; Fernández, Antonio; Kaufmann, Manfred; Cordeiro, Nereida; Dinis, AnaIn this study, an innovative method was developed to detect and quantify phthalates in fresh cetacean blubber. An adaptation of the ammonium formate QuEChERS method was used and adapted as a micro-extraction for small quantities of samples. Significantly, this technique utilized minimal quantities of reagents and salts, with the additional implementation of rigorous Quality Assurance/Quality Control protocols t...
Trophic position of dolphins tracks recent changes in the pelagic ecosystem of ...
Bode, Antonio; Saavedra, Camilo; Álvarez-González, Miguel; Arregui, Marina; Arbelo, Manuel; Fernández, Antonio; Freitas, Luís; Silva, Mónica A.Dolphins play a key role in marine food webs as predators of mid-trophic-level consumers. Because of their mobility and relatively long life span, they can be used as indicators of large-scale changes in the ecosystem. In this study, we calculated the trophic position (TP) of 5 dolphin species from the Canary, Madeira and Azores Islands using bulk and compound-specific stable isotope ratios from muscle tissue t...
Galileo's surveying potential E5 pseudorange precision
Colomina, Ismael; Miranda, Christian; Pares, M. Eulälia; Andreotti, Marcus; Hill, Chris; Silva, Pedro F. da; Silva, Joao S.; Peres, TiagoSubmitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:26:24Z No. of bitstreams: 0; Made available in DSpace on 2014-05-27T11:26:24Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-03-01; New Galileo signals have great potential for pseudorange-based surveying and mapping in both optimal open-sky conditions and suboptimal under-canopy environments. This article reviews ...