Exploitation of novel materials and different reaction media for sensitivy/selectivity enhancement in the analyses of biological and environmental samples

• Grant number: 99/12124-7
• Support Opportunities: Research Projects - Thematic Grants
• Start date: November 01, 2000
• End date: October 31, 2004
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Elias Ayres Guidetti Zagatto
• Grantee: Elias Ayres Guidetti Zagatto
• Host Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The feasibility of exploiting different reaction media and/or novel materials will be investigated in order to developed analytical procedures with enhancement characteristics of sensitivity and selectivity for the analysis of biological and environmental samples such as pharmaceuticals, natural waters, foodstuffs, agro-industrial residues and biological fluids. Atomic absorption spectrometry, UV-Vis spectrophotometry and fluorimetry, as well as electroanalytical techniques will be employed. (Bio)sensors envolving novel materials, strategies for separation and/or concentration involving vermicompounds, humic acid and similar, and micelar mediaachieved through degradable surfactantes will be developed. The planned research aims the availability of advanced analytical procedures emphasizing the concept of Green Chemistry and presenting superior characteristics of selectivity, sensitivity, portability, cost and feasibility to miniaturization and automation. (AU)

Scientific publications

(16)

(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)

SANDRA C. C. ARRUDA; ADRIANA P. M. RODRIGUEZ; MARCO A. Z. ARRUDA. Ultrasound-assisted extraction of Ca, K and Mg from in vitro citrus culture. Journal of the Brazilian Chemical Society, v. 14, n. 3, p. 470-474, 2003-05-00. (99/12124-7)

MADSON G. PEREIRA; MARCO A. Z. ARRUDA. Vermicompost as a natural adsorbent material: characterization and potentialities for cadmium adsorption. Journal of the Brazilian Chemical Society, v. 14, n. 1, p. 39-47, 2003-01-00. (99/12124-7)

BRANCALION‚ M.L.; ARRUDA‚ M.A.Z.. Evaluation of medicinal plant decomposition efficiency using microwave ovens and mini-vials for Cd determination by TS-FF-AAS. Microchimica Acta, v. 150, n. 3, p. 283-290, 2005. (99/12124-7)

FLORES‚ A.V.; PÉREZ‚ C.A.; ARRUDA‚ M.A.Z.. Evaluation of a synergetic effect between Rh as permanent chemical modifier and acetylacetone as complexing agent in Sc determination in sediment slurry samples by ETAAS. Analytica Chimica Acta, v. 530, n. 2, p. 299-305, 2005. (99/12124-7)

CARNEIRO‚ J.M.T.; DIAS‚ A.C.B.; ZAGATTO‚ E.A.G.; SANTOS‚ J.L.M.; LIMA‚ J.L.F.C.. An improved sampling approach in multi-pumping flow systems applied to the spectrophotometric determination of glucose and fructose in syrups. Analytica Chimica Acta, v. 531, n. 2, p. 279-284, 2005. (99/12124-7)

DEL PILAR TABOADA SOTOMAYOR‚ M.; TANAKA‚ A.A.; KUBOTA‚ L.T.. Development of an enzymeless biosensor for the determination of phenolic compounds. Analytica Chimica Acta, v. 455, n. 2, p. 215-223, 2002. (99/12124-7)

DE GODOI PEREIRA‚ M.; ARRUDA‚ M.A.Z.. Preconcentration of Cd (II) and Pb (II) using humic substances and flow systems coupled to flame atomic absorption spectrometry. Microchimica Acta, v. 146, n. 3, p. 215-222, 2004. (99/12124-7)

TEIXEIRA TARLEY‚ C.R.; ZEZZI ARRUDA‚ M.A.. Biosorption of heavy metals using rice milling by-products. Characterisation and application for removal of metals from aqueous effluents. Chemosphere, v. 54, n. 7, p. 987-995, 2004. (99/12124-7)

TARLEY‚ C.R.T.; ARRUDA‚ M.A.Z.. A sensitive method for cadmium determination using an on-line polyurethane foam preconcentration system and thermospray flame furnace atomic absorption spectrometry. Analytical Sciences, v. 20, n. 6, p. 961-966, 2004. (99/12124-7)

MATOS‚ GD; ARRUDA‚ MAZ. Vermicompost as natural adsorbent for removing metal ions from laboratory effluents. Process Biochemistry, v. 39, n. 1, p. 81-88, 2003. (99/12124-7)

FLORES‚ A.V.; PÉREZ‚ C.A.; ARRUDA‚ M.A.Z.. Evaluation of zirconium as a permanent chemical modifier using synchrotron radiation and imaging techniques for lithium determination in sediment slurry samples by ET AAS. Talanta, v. 62, n. 3, p. 619-626, 2004. (99/12124-7)

PEREIRA-FILHO‚ E.R.; SENA‚ M.M.; ARRUDA‚ M.A.Z.; POPPI‚ R.J.. Exploratory analysis of L’vov platform surfaces for electrothermal atomic absorption spectrometry by using three-way chemometric tools. Analytica Chimica Acta, v. 495, n. 1, p. 177-193, 2003. (99/12124-7)

CARNEIRO‚ J.M.T.; DIAS‚ A.C.B.; ZAGATTO‚ E.A.G.; HONORATO‚ R.S.. Spectrophotometric catalytic determination of Fe (III) in estuarine waters using a flow-batch system. Analytica Chimica Acta, v. 455, n. 2, p. 327-333, 2002. (99/12124-7)

NASCENTES‚ C.C.; ARRUDA‚ M.A.Z.. Cloud point formation based on mixed micelles in the presence of electrolytes for cobalt extraction and preconcentration. Talanta, v. 61, n. 6, p. 759-768, 2003. (99/12124-7)

TEIXEIRA TARLEY‚ C.R.; COSTA FERREIRA‚ S.L.; ZEZZI ARRUDA‚ M.A.. Use of modified rice husks as a natural solid adsorbent of trace metals: characterisation and development of an on-line preconcentration system for cadmium and lead determination by FAAS. Microchemical Journal, v. 77, n. 2, p. 163-175, 2004. (99/12124-7)

TREVISAN‚ M.G.; POPPI‚ R.J.. Determination of doxorubicin in human plasma by excitation-emission matrix fluorescence and multi-way analysis. Analytica Chimica Acta, v. 493, n. 1, p. 69-81, 2003. (99/12124-7)