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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 type:Scholarships in Brazil - Doctorate
Effective date (Start): January 01, 2007
Effective date (End): May 31, 2010
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Elias Ayres Guidetti Zagatto
Grantee:Paula Regina Fortes
Home Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil


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)
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.
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. Web of Science Citations: 7.
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.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
FORTES, Paula Regina. Sistemas de análises químicas em fluxo explorando mecanismos de re-alimentação, calibração multivariada e outras abordagens para melhoria em desempenho. 2010. Doctoral Thesis - Universidade de São Paulo (USP). Centro de Energia Nuclear na Agricultura Piracicaba.

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