Zobrazeno 1 - 10
of 113
pro vyhledávání: '"José Luis Burguera"'
Autor:
José Luis Burguera, Marcela Burguera
Publikováno v:
Talanta. 96:11-20
Dispersion systems like emulsions and microemulsions are able to solubilize both polar and non-polar substances due to the special arrangement of the oil and aqueous phases. The main advantages of using emulsions or microemulsions in analytical chemi
Autor:
José Luis Burguera, Marcela Burguera
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 64:451-458
Few of the elements present in nature play a metabolic role in living organisms. According to their abundance, these elements are classified as macro-, micro- or trace elements, representing 93%, 5% and around 1% respectively, of the total body weigh
Autor:
Marcela Burguera, Yaneira Petit de Peña, Rosario Brunetto, José Luis Burguera, Máximo Gallignani, Pablo Carrero, Jean-Louis Salager, Carlos Rondón, R. E. Antón, Maria Antonieta Arandia
Publikováno v:
Talanta. 68:179-186
The sequential injection (SIA) technique was applied for the on-line preparation of an "oil in water" microemulsion and for the determination of aluminum in new and used lubricating oils by electrothermal atomic absorption spectrometry (ET AAS) with
Autor:
Máximo Gallignani, Pablo Carrero, Darveris Rivas, Marcela Burguera, María del Rosario Brunetto, Alarcón Om, O.P. Márquez, Yaneira Petit de Peña, Carlos Rondón, Jairo Márquez, José Luis Burguera
Publikováno v:
Talanta. 68:219-225
A sensitive and selective method was developed for the determination of traces of manganese in urine using on-line electrochemical preconcentration followed by flame atomic absorption spectrometry detection. A home made flow-through polypropylene cel
Autor:
José Luis Burguera, Máximo Gallignani, María del Rosario Brunetto, Marcela Burguera, Fernando Ovalles
Publikováno v:
Talanta. 68:365-373
In this work, a flow analysis-hydride generation-gas phase derivative molecular absorption-(UV) spectrophotometric method has been developed for the direct determination of antimony in aqueous and hydro-alcoholic samples. Antimony (III) from undilute
Autor:
Carlos Ayala, José Luis Burguera, Maribel Valero, Máximo Gallignani, Marcela Burguera, Argenis Sánchez, María del Rosario Brunetto
Publikováno v:
Talanta. 64:1290-1298
In this work, the coupling between flow analysis (FA)–vapor phase generation (VPG) and Fourier transform infrared spectrometry (FTIR) has been proposed as a novel and alternative strategy for the determination of nitrite. The analyte was transforme
Autor:
José Luis Burguera, Marcela Burguera
Publikováno v:
Talanta. 64:1099-1108
An amphiphile (surfactant) spread on water can lead to the formation of different aggregates: vesicles, miscelles, emulsions or microemulsions; depending on its concentration; its molecular structure and/or the experimental conditions. Such aggregate
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 57:2159-2165
A method for the determination of total selenium in serum samples by graphite furnace atomic absorption spectrometry was evaluated. The method involved direct introduction of 1:5 diluted serum samples (1% v/v NH 4 OH+0.05% w/v Triton X-100 ® ) into
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 57:561-569
A method for the determination of molybdenum in whole blood by atomic absorption spectrometry with electrothermal atomization was developed and evaluated. Erbium (25 μg) was chosen from several potential chemical modifiers (Sm, Lu, Ho, Eu and Pd+Mg)
Publikováno v:
The Analyst. 127:1705-1712
The combination of flow analysis (FA), hydride generation (HG) and Fourier transform infrared (FTIR) spectrometry is proposed as a novel and powerful analytical technique for the individual and simultaneous determination of antimony, arsenic and tin