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One-year variation in quantity and properties of microplastics in mussels (Myti...
Botelho, M. J.; Vale, C.; Marques, F.; Moreirinha, C.; Costa, S. T.; Guilhermino, L.; Joaquim, S.; Matias, D.; Candeias, M.; Rudnitskaya, A.As filter feeders, marine bivalves inhabiting estuarine and coastal areas are directly exposed to microplastics (MPs) in water. To assess whether MPs number, and their shape, size, colour, and polymer type present in mussels (Mytilus galloprovincialis) and cockles (Cerastoderma edule) varied over one year, bivalves were collected over the year of 2019 in the lower part of the coastal Aveiro lagoon, Portugal. Af...
Detection of copper, lead, cadmium and iron in wine using electronic tongue sen...
Simões da Costa, A. M.; Delgadillo, I.; Rudnitskaya, A.An array of 10 potentiometric chemical sensors has been applied to the detection of total Fe, Cu, Pb and Cd content in digested wine. As digestion of organic matter of wine is necessary prior to the trace metal detection using potentiometric sensors, sample preparation procedures have been optimized. Different variants of wet and microwave digestion and dry ashing, 14 conditions in total, have been tested. Deco...
Design of molecularly imprinted polymers for diphenylamine sensing
Granado, V. L. V.; Rudnitskaya, A.; Oliveira, J. A. B. P.; Gomes, M. T. S. R.A series of the polymers imprinted with diphenylamine (DPA) and respective non imprinted polymers were synthesized using precipitation polymerization. Synthesized polymers were characterized by Fourier Transform Infra-Red spectroscopy with Total Attenuated Reflectance (FTIR-ATR), Scanning Electron Microscopy (SEM) and equilibrium batch re-binding experiments. Influence of the synthesis conditions, namely monome...
Evaluation of the feasibility of the electronic tongue as a rapid analytical to...
Rudnitskaya, A.; Sílvia M. Rocha; Legin, A.; Pereira, V.; Marques, J. C.A set of fourteen Madeira wines comprising wines produced from four Vitis vinifera L. varieties (Bual, Malvasia, Verdelho and Tinta Negra Mole) that were 3, 6, 10 and 17 years old was analysed using HPLC and an electronic tongue (ET) multisensor system. Concentrations of 24 organic acids, phenolic and furanic compounds were determined by HPLC. The ET consisting of 26 potentiometric chemical sensors with plastic...
Evaluation of the feasibility of the electronic tongue as a rapid analytical to...
Rudnitskaya, A.; Rocha, S. M.; Legin, A.; Pereira, V.; Marques, J. C.A set of fourteen Madeira wines comprising wines produced from four Vitis vinifera L. varieties (Bual, Mal vasia, Verdelho and Tinta Negra Mole) that were 3, 6, 10 and 17 years old was analysed using HPLC and an electronic tongue (ET) multisensor system. Concentrations of 24 organic acids, phenolic and furanic compounds were determined by HPLC. The ET consisting of 26 potentiometric chemical sensors with plasti...