Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Silvia R.P. Meneses"'
Autor:
André F. Lavorante, Elias A.G. Zagatto, Silvia R.P. Meneses, Cherrine K. Pires, Luciana M.T. Marconi
Publikováno v:
Microchemical Journal. 83:70-74
A multi-pumping flow-based procedure with chemiluminescent detection is proposed for the determination of ascorbic acid, AA, in fruit juices (powdered form). The method relies on the inhibitory effect of AA on the oxidation of luminol by hydrogen per
Publikováno v:
Analytica Chimica Acta. 572:316-320
Differential kinetic analysis can be implemented in a multi-pumping flow system, and this was demonstrated in relation to an improved spectrophotometric catalytic determination of iron and vanadium in Fe-V alloys. The method exploited the influence o
Autor:
Silvia R.P. Meneses, Paula R. Fortes, Ana Paula G. Gervasio, Elias A.G. Zagatto, Carlos Eduardo Saraiva Miranda
Publikováno v:
Talanta. 69:927-931
A flow-injection procedure for simultaneous spectrophotometric determination of tungsten and molybdenum in steel alloys is proposed. The method exploits the catalytic effects of Mo(VI) and W(VI) on the rate of iodide oxidation by hydrogen peroxide un
Autor:
Karine L. Marques, Eduarda Fernandes, José L. F. C. Lima, João L.M. Santos, Silvia R.P. Meneses, Cherrine K. Pires, Elias A.G. Zagatto
Publikováno v:
Analytical biochemistry. 345(1)
An automated flow-based procedure for assessment of total antioxidant capacity was developed. It involved a multipumping flow system, a recent approach to flow analysis, and exploited the ability of selected compounds to inhibit the chemiluminescence
Publikováno v:
Talanta. 65(5)
A flow-injection procedure for spectrophotometric determination of sulphate in soil solutions is proposed. Samples are directly soaked from the soils under field conditions, in-line filtered through ceramic plates, and preserved with thymol. The meth