Development of analytical flow systems exploiting feedback mechanisms, improved conditions for detection and/or multivariate calibration: application to agro-industrial or environmental samples

• Grant number: 06/03859-9
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: January 01, 2007
• End date: May 31, 2010
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Elias Ayres Guidetti Zagatto
• Grantee: Paula Regina Fortes
• Host Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

Intelligent analytical flow systems exploiting feedback mechanisms, improved conditions for detection and multivariate calibration will be developed. Simplicity, versatility and rudgeness are aimed in order to permit operation of the systems under field conditions. As applications, analyses relevant to agro-industrial and environmental studies will be focused. These include: i) determination of chloride and sulphate in natural waters from semi-arid regions, sulphate determination (optional) being accomplished only after real time decision; ii) adulteration assessment related to glucose syrups based on fructose and glucose determinations; iii) simultaneous determination of iron, titanium and vanadium in rocks, sediments and similar stuffs exploiting multivariate calibration. Moreover, strategies for improving mixing condiitons will be critically investigated in order to improve detection condiitons in flow analysis.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FERES‚ M.A.; FORTES‚ P.R.; ZAGATTO‚ E.A.G.; SANTOS‚ J.L.M.; LIMA‚ J.L.F.C.. Multi-commutation in flow analysis: Recent developments and applications. Analytica Chimica Acta, v. 618, n. 1, p. 1-17, 2008. (06/07309-3, 06/03859-9, 06/03718-6)

FORTES, PAULA R.; FERES, MARIO A.; ZAGATTO, ELIAS A. G.; LIMA, JOSE L. F. C.. Sequential injections as an alternative to gradient exploitation for implementing differential kinetic analysis in a flow injection system. Talanta, v. 81, n. 4-5, p. 1409-1412, JUN 15 2010. (06/03859-9, 06/07309-3)

FORTES‚ P.R.; FRIGERIO‚ C.; SILVESTRE‚ C.I.C.; SANTOS‚ J.L.M.; LIMA‚ J.L.F.C.; ZAGATTO‚ E.A.G.. Cadmium telluride nanocrystals as luminescent sensitizers in flow analysis. Talanta, v. 84, n. 5, p. 1314-1317, 2011. (06/03859-9)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

FORTES, Paula Regina. Flow systems exploiting feed-back mechanisms, multivariate calibration and other strategies for improving the analytical performance. 2010. Doctoral Thesis - Universidade de São Paulo (USP). Centro de Energia Nuclear na Agricultura (CENA/STB) Piracicaba.